endobj The .300 cartridge uses the same powder as large caliber handguns, such as .44 & .45's. The CCI 400s are more than capable of getting a full burn in a 300 BO, and pressure issues are really very minimal in 300 BO because it really is a relatively low pressure load. To save a bunch of questions, you may want to add W296 next to H110, with a note that they are the same powder. 0. Hand load data for reloading .300Blk using projectiles from 110 grains to 230 grains with appropriate smokeless powders from Hodgdon, IMR & Winchester. It is a versatile chambering, capable of accepting a wide range of .30-caliber projectiles. Now for preparations for 2018 Bear season While subsonic loads are technically possible with W296, you should avoid them because it is too easy to reach dangerous overpressure levels with this powder. Always start [] 243 Outdoors. Accurate 1680 (AA1680) is a well-known double-base propellant with one of the fastest burn rates available. Available in 1 lb., 4 lb. For reloading information:WARNING: The loads shown are for informational purposes only. However, nowadays, inexpensive, big-name mass-produced .300 Blackout is harder to find. 7. There are a handful of solid reloading manuals out there from Speer, Hornady, Sierra, and Barnes, to name a few. http://www.300blktalk.com/forum/viewtopic.php?f=141&t=81553. Second stupidly and even dangerously compressed loads You might think I carry a gun because I don't trust God. The cleaner your brass is, the longer your dies will last, especially if that brass has been in the dirt at all. In addition, H110 is "the" choice for 410-bore shotgun, especially among . There's a good reason this companies spend so much time making reloading manuals. Win 296 and H110 are the same, 4227 is not. Most accurate and functional: 10.0gr AA1680, WSPM @ 2.180 OAL - 1,025 fps. A few manufacturers offer bolt action rifles chambered in the 300 BLK. This I usually get from GI Brass Locker, though there are other sources out there.Primers will be whatever is prescribed in the load data that you obtain. After investigation, AAC found the 7.6239 cases aggressive taper too extreme for a standard M4 magazine to accommodate. Excellent for loading high velocity rounds in big bore revolvers such as .44 magnum, .460 magnum and .500 magnum. Nosler specifies a Winchester standard rifle primer. I plan to build a bolt action with a 16.5 barrel and will use projectiles between 180 220 gr., so not sure if I should go with the 1-8 or get a 1-7 barrel blank made. My Start load was 16.5 grains and showed no pressure. To reload your own .300 Blackout, there are some must-have tools needed to make high-quality handloads.Before you embark on this, assuming you havent already, you should probably find a reloading manual and get familiar with the process of reloading your own ammunition as well as finding the load data youre going to need. There is not much load data for this powder so I had to work up my own. Powders from 60-72 on the Hodgdon burn rate chart SHOULD all work(most have been proven to work) in the AR15 platform. .300 AAC Blackout - Manufacturer Loading Data Shellholder: Hornady #16 Lee #4 Lyman #26 RCBS #10 Pistol Rifle Cowboy Starting Max Source 100 gr HPCE / OTCE (Lapua) 0.308" Powder: N105 (VihtaVuori) Primer: Small Rifle Case: Lapua Trim Length: 1.362" C.O.L. I have complete faith in my Lord. 300 Blackout 125 GR NOS BT Hodgdon Trail Boss .308" 2.060" 300 Blackout 135 GR SIE VAR HP Hodgdon Trail Boss .308" 2.055" . 300 Blackout Reloading Data An Infamous round created by the Advanced Armament Corp in partnership with Remington in order to allow a .30 caliber to be used with an M4 with nothing more than a barrel exchange. Winchester 296 is a ball powder developed for large handgun loads. This is the only powder I have used in my 44 Magnum ever since. Whereas the fixed distance competition shooter may be fine with higher magnification and precise .125 MOA adjustments, the military/law enforcement/tactical shooter is []. It is the factory powder for Winchester 357, 41 and 44 magnums. My Hornady 10th edition manual doesn't include it either. BTW, small standard rifle primers are nearly identical to small magnum pistol primers .. about the same mix and cup thickness. Most quiet but not functional (w/o lighter springing): Keep in mind that the benchrest crowd, the hot-rodders of this sport, feel the best accuracy is on the edge of stabilization. I save Lil' Gun for subs. The Best Self Defense Ammo Ballistic Testing, The 300 AAC Blackout delivers ballistic performance comparable to 7.6239, yet possesses a base diameter that optimizes functionality in an AR-type platform. The 300 AAC Blackout is a similar concept to previous wildcats, such as the 30-221 and 300 Fireball, as well as the proprietary 300 Whisper, except that 300 BLK was the first to be a SAAMI approved cartridge and any company is free to make firearms or ammunition. An Instruction/Load data Sheet for the 300 Blackout die set can be purchased through the link below. If you need greater amounts of ammo, you may want to look at a turret or progressive press. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, check out my 300 AAC Blackout Review from September 2012, 125, 135, 175 and 220 grain Sierra MatchKings, AICS style 223 magazine from Accurate Mag, Modular Driven Technologies (MDT) HS3 Chassis Review: Initial Thoughts, 308 Winchester Load Development: 175-grain Sierra Matchking and Varget, Building a Custom Remington 700 .308 Tactical Rifle, Smith and Wesson K-Frame revolver barrel removal and installation, 308 Winchester load development: Sierra .308 195 gr. It is also widely considered to be the powder of choice for .410 bore shotgun shells. Geez. Sierra 180Grain match king projo, 12.2 grains of powder. The gun doesnt move, there is even less recoil than an AR because you dont have the mass of the bolt carrier reciprocating in the rifle. Load data may show slight variations between 296 and 110, but as I understand it, those differences are from varied batches during testing time with each powder label. The short case length doesnt necessarily effect feeding, since the bullet of the loaded cartridge is similar in length to the 223 Remington, but it can make ejection difficult from many bolt action rifles. It has since become popular for a wide range of uses including hunting and home defense. Is that obsolete now, or not recommended. INDICATES MAXIMUM LOAD USE CAUTION Offcource in case of subsonic 300 BLK, forgot to mention, sorry. Thats a lot of work already done that I only need to tweak for my rifle, however when I chrono these loads Sierra is pretty much dead on! Such large projectiles convey a subsonic muzzle velocity that is accompanied by a quiet report. Pingback: NEW: Sierra Bullets .300 AAC Blackout Reloading Data - AK Arms, Pingback: NEW: Sierra Bullets .300 AAC Blackout Reloading Data | Firearms Life, They should. It has since become popular for a wide range of uses including hunting and home defense. To clean your brass, you need a vibratory polisher/tumbler, polishing media and brass separator. powder: A1680. works like a charm. Your email address will not be published. Not sure on charge weight but I know there is plenty info out there at, Those would be first hand from those guys. There was a problem loading the comments. He had groomed his son, William Wirt Winchester as his successor, but the younger Winchester died of tuberculosis in March of the following year before he could assume control of Winchester Repeating Arms. As Im sure you noticed, some powders handle a fairly wide variety of bullet weights. Certifiable has done some pretty good work on Subsonic powders for both carbine and pistol gas systems. If youre using an AR-15 or another self-loading platform, the powder charge must also be enough to reliably cycle the action, unless you dont mind transforming your AR-15 into a straight-pull bolt-action rifle. Scroll right to see energy, drop and coefficient data. Feeds well in my Hornady progressive press. : Vihtavuori 100 gr HPCE / OTCE 12 drop at 150 yd. Amp up your AK with these exciting accessories. Why not give JD Jones credit for the development of the 300 Whisper, which AAC tweaked into the 300 AAC Blackout by increasing the length of the chamber throat 0.015 and SAAMI-ed it. We have the best 296 Winchester Powder For Sale here at Worldly Armory for a very Cheap and Affordable Prices. Communism only made one thing that works, and capitalism can make it even better. The chief difficulty in accurately firing 300 Blackout comes from learning to accommodate its pronounced bullet drop. On the up side, firing the 300 BLK from a precision rifle is a pleasure. Ive seen somewhat large quantities of ammo loaded on a single stage, but it is time-consuming and sometimes involves bribing children to do things like checking it all in a case gauge (be sure to check your states child labor laws). Match Grade. Yes, I am a Baptist, and yes I carry a gun. I am confident that it would also be well suited to .454 Casull and other strong calibers. A better solution to this problem is to use the .300 Blackout-specific magazines made by D&H Tactical and Magpul.A couplenice-to-have items that are not necessarily required for reloading .300 blackout are a brass tumbler and brass separator. Handloading, also called reloading, is more than just a wonderful hobby for gun owners. VAT (where applicable), shipping costs and possible delivery charges. I use it for my 220gr subsonic 300 blk loads. Thats a 16: bbl. If you arent worried about being on the cutting edge of accuracy, the fast twist needed to stabilize the heavier bullets, means you are spinning the lighter loads way too fast. 296 speaks for itself. If, you are wanting to use 4198 for driving a .223, then that is a different story. In contrast, subsonic .300 Blackout is ballistically very close to the Russian 9x39mm, the 2 often being compared to the point that bullet drop data and points of impact are virtually identical from 0 to 200 meters. Yea, that's right. An ideal solution for loading 357 Magnum, 44 Magnum, and even 410-bore shotshell ammunition, its high loading density provides optimal velocity. It is a beginning and the list will be adjusted and or modified as things progress. Check out the hodgdon site http://data.hodgdon.com/cartridge_load.asp More posts from r/reloading 74K subscribers SevereNameAnxiety 27 days ago So I met and befriended the guy that runs the local pd range. Intended primarily for high case capacity, high-power cartridges such as .454 Casull, .475 Linebaugh, and .500 S&W Magnum, it has also been used successfully for decades in certain rifle calibers, such as 7.62x39mm and .300 Blackout. You may have a great load that is pushing max and loading from an 8lb keg, and a few years later you buy another keg. The best 5 shot group was .334 MOA while the worst was 3.787 MOA! 300 Blackout is taking the shooting world by storm, and for good reason. Hogdon H110 isn't bad according to Foghorn (who graciously loaned . Get the invoqe newsletter for similar stories delivered straight to your inbox. It is a classic reloading powder that should be on the shelves of any handloading enthusiast. Required fields are marked *. 300 BLK, Cartridge Selection, Reloading If you are using heavily soiled range-pickup brass, youll need the more aggressive walnut-hull media.All in all, youll have some upfront costs but if you shoot a lot of .300 Blackout, youll find the break even point in short order. If you folks want really figures use quick loadthis data and noslers data is bogus. To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. The 300 AAC Blackout Loading Data wasn't listed in the 2016 version because we hadn't received load data for that caliber at the time of the printing. : 1.831" Powder: 10.3 gr 13.0 gr Vel. Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. At best, a powder charge that is safe to use with the lighter, shorter bullet may make it impossible to seat in the longer, heavier bullet. H110/W296 is a great powder for the 300 AAC Blackout however I have found in both of our uppers that it is not a good powder for subsonic loads. A subsonic 300 Blackout round produces comparatively little muzzle flash in addition to a softer report, making it a fine choice for hunting in nighttime and twilight conditions. Want a subsonic load using reloader 7 or h4198? 152. This cartridge accepts 0.308 bullets, making it a true .30-caliber cartridge for which a wide selection of projectiles ranging from 80 to 250 grains is available. Loading 300 Blackout - ep 10 - First subsonic test loads with Palmetto Projectiles Function and velocity testing with Winchester 296 There are different opinions about the need for magnum primers with H110 in 300 BLK. I would say 10 times more people use lil gun than R7 for subsonic loads. IMR 4227 is a pistol powder with a medium burn rate, primarily intended for use in Magnum pistol and revolver cartridges. For specific loads, there is also information available on Hodgdon Powders website.One thing you may want to decide before reloading .300 Blackout is whether you want to load subsonic ammunition, supersonic ammunition or both. I understand why the 300 BLK caught on in the AR and I also understand why didnt take off as much in the bolt guns. LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED. At worst, it puts you at risk of extreme and life-threatening overpressure. If you see something not right let me know, by also giving supporting reasoning. 1 pound. Create a free website or blog at WordPress.com. IMR 4227 is suitable for supersonic and subsonic loads. Let your fellow shooters know share this article using the Facebook, Twitter and other social media icons below. Ramshot Enforcer is also usable as a high-performance powder for .300 Blackout supersonic loads, ideal for projectiles ranging between 110 and 155 grains. There may be rate exceptions but your in for a lot of frustration if you go that route. Winchester 296 Ball Powder. Load Data Card - .300 AAC Blackout (7.62x35mm) - AR-15. The two key features that make the 300 BLK excellent for the AR platform, make it difficult to work with in a bolt action rifle; a short case and use of both super and subsonic bullets. Berry's 220 grain 300 Blackout bullets. Id probably use one if I had one.As far as powder goes, youll need to find something appropriate for the loads youre intending to make. I haven't had much luck with Trail Boss in the Blackout for what it's worth. Baton Rouge. For the next 14 years Winchester aggressively sought new markets, created new products and explored new opportunities for his lever-action rifles. <>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 792 612] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> A subsonic load requires a powder that will launch your bullet at a muzzle velocity under the speed of sound (1,125 ft/s) with sufficient downrange accuracy. Depending on the weight and length of the bullet selected, the amount of space available inside the case may change dramatically. Now I use the 296 only for my S&W 460. Although they are more recently developed cartridges, lots of people love lil' gun in 460 Magnum and in the rifle cartridges 300 Blackout and 450 Bushmaster. I have three sources of loading data: Lyman's. Find load data for Winchester 296 propellant by clicking the button "Loads for this Powder".More about this powder:Wincheste. It is the same powder (but from different lots) but relabeled. These seemingly small differences are significant. by Merlin1274 Sat Dec 14, 2013 10:38 pm, Post Suggested subsonic load: R-P 300 AAC BLACKOUT brass Remington 7.5 primers 11.2 grains of AA 1680 powder Case length is 1.368 +0.000 -0.020 Sierra 220 MK loaded to 2.089 OAL (this length is optimal for reliable feeding from USGI magazines) . Also slight keyholing and groups growing up. These are powders that are typically marketed to the magnum pistol crowd, not the rifle folks. New Starline 300 Blackout Cases. I've seen a few posts and videos on using pulled 147 gr. Rounds were fed from a AICS style 223 magazine from Accurate Mag. . The rifle, as pictured above, includes the following parts fromBrownells: For testing and evaluation purposes, I used 125, 135, 175 and 220 grain Sierra MatchKings (left to right in photo below) over H110 and IMR 4227 powders. Please enter your login details below. When a certain caliber can range from pushing bullets around 150 grains down range around 2500 feet per second to throwing 245-grain bullets at 950 feet per second, it obviously . The case manufacturer, Nosler or Jagemann (JAG), is listed on the table below. Winchester 296 is also recommended for 410-bore AA loads. It was later followed by CFE Pistol in 2014 and CFE BLK in 2019. After testing with a number of projectile weights it seemed a waste of time to try another powder as it was obvious the combination shot better than I could! $ 39.99. There tends to be a lot of newer 300 blk owners, and re-loaders joining lately, and I believe that will continue to grow. Reloading data available in these calibers:.22 Hornet.221 Remington Fireball.222 Remington.223 Remington.22 PPC-USA 6 mm PPC-USA.300 AAC Blackout.308 Winchester.30-30 Winchester.300 Savage 7,62 x 53R (7,62 Russian) 7,62 x 39.303 British 8 x 57 IS (8 mm Mauser) 9,3 x 62 9,3 x 74R.444 Marlin.45-70 Government.458 Winchester Magnum 7 mm TCU 7 mm BR . A view into a Dillon Precision XL650 progressive reloading press midway through loading some .300 Blackout with 180 . Case capacity is critical with .300 Blackout. Consult appropriate load manuals prior to developing your own handloads. The Rainier Ballistics bullets come in a wedge or a hollowpoint offering. Powders include Winchester, Hodgdon, IMR I worked up a load and settled at 9.8gr of 296 which turns out to be an exact load listed by Winchester on their load data website. of H-110 as a supersonic loading. 300 AAC Blackout is also finding use with hunters, who may not have been able to legally hunt with .223 in their state, and who prefer .30 caliber bullets for medium-sized game. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. Winchester 296 is also recommended for 410-bore AA loads. Today, IMR is a trademark of the IMR Powder Company, a Hodgdon brand. The velocities cited for the BLK are asthmatic. I found some commercial manufactures (mostly off the record) either discontinued bolt guns in 300 BLK, pulled them from the market after the product was announced, or declined to introduce them due to accuracy and feeding concerns. We are currently populating the cartridge drop-down menu with updated cartridge renderings, new propellants and bullets, and links to complimentary product pages. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. The 300 BLK is an interesting cartridge for the rifleman. Oal 2.260 8.7 grains. As far as the other machines, I would stick to what they recommend.One of two tools I find indispensible, not including those for making necessary die and press adjustments is a case gauge. Hogdon H110 works well for 110-220gr projectiles. They instead heavily based their new cartridge on SSK Industries 300 Whisper. Load data may show slight variations between 296 and 110, but as I understand it, those differences are from varied batches during testing time with each powder label. It was originally created for Winchester .410 shotgun factory ammo, but found use in 30 Carbine and magnum pistol loads. Alliant Power Pro 300-MP Lake City Federal 205 17.1 1866 19.2 Winchester 296 Lake City Federal 205 16.7 1894 18.4 Ramshot Enforcer Lake City Federal 205 15.4 1839 17.2 IMR 4227 Lake City Federal 205 16.7 1823 18.5 C Accurate 5744 Lake City Federal 205 17.5 1829 18.7 C Vihtavuori N110 Lake City Federal 205 15.0 1830 16.5 C The case dimensions are very similar to .223 Remington and 5.56mm NATO, with virtually identical cartridge overall length (COL) and base diameter, allowing a shooter to load .300 Blackout cartridges in an unmodified AR-15 magazine without loss of capacity. Winchester 231 is way too fast to be used for the 300 BO. and 8 lb. They first looked to the 7.6239 for inspiration. As far as twist rate is concerned,I wanted the flexibility of being able to shoot the light and heavy rounds, so I ordered a custom barrel from Bartlein with a 1:7 twist. The more we all know, the better organized and stronger the shooting and hunting community will be. Works good for 357 mag, achieves expected 1200+ fps. Duane Siercks, Ballistic Technician. Ordered 1:7 barrel to another gun, used same loads in exactly same conditions, no issues. ES -----174 fps. You can purchase factory-new brass made by Hornady or Remington. I fired these in a Remington 700 at ninety yards without the suppressor attached. Have experienced some unstability problems with cans and 1:8 barrels with 220 gr sierras. I was at Cabelas flipping through several reloading manuals and could not find 147 gr. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. I like the topic, good initiative on consolidating info for the new comers. Selected this powder based on recommendations that it was good for .410 reloading. Make sure always to observe reloading safety rules and not to reload while ill, tired, impaired, or in any state with less than your undivided attention. 300 Blackout 220 GR SIE HPBT Winchester 296 .308" 2.260" . : 1,867 2,110 Press. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. The relatively fast burn rate makes it suitable for loading various varmint and intermediate rifle cartridges with limited case capacity, such as .22 Hornet, .221 Fireball, .222 Remington, or .300 Blackout. These guns have had mixed success. Heavier subsonics can use Hodgdon CFE Black, Winchester 296 and Accurate 1680. AA1680 or similar in burn rate should work well. H110 powder. When I purchased my Super Blackhawk, the first powder I chose was WW296. The fast burn rate makes it ideal for use in subsonic loads, producing enough pressure to cycle the action even when pushing the heaviest bullets out of the muzzle. For a better experience, please enable JavaScript in your browser before proceeding. A Nosler 125 gr. Examining the table above, note the wide range of accuracy, velocity and standard deviation achieved with the different loads. He deserves NOTHING and would tax the IRS if he could do it. Since you can work with bullets from 110 grain up to 240 grain in both hypersonic and subsonic loads it boasts tremendous, close-range versatility. For lightweight supersonic loads IMR 4227, Hodgdon CFE Black, Hodgdon H110, Winchester 296 and Alliant 2400 are good options. and 8 lb. Some of the other guys may back me up on this, I haven't found any supersonic loads that don't deliver at least one inch groups in the Blackout but the subs are a different story. APP Automatic Processing Press 90951 90933, http://leeprecision.com/300aac-blackout-c-tb.html. 1 MOA. 7.3 grains of trail boss seems high even for max charge. With the right projectiles and an adequate rifle platform, such loads are ideal for hunting or self-defense. Click here to download Sierra Bullets 300 AAC Blackout Load Data for the 5th Edition Manual. I went back and read my notes. So how does everyone find the stability of the heavier projectiles with the 1-8 twist rate? Effective range for hunting is about 100-150 yards. 125 gr. Well you would be wrong. Why not put all pomp aside and manufacture light bullets for this PISTOL? Most shooters use it in varying capacities from 200 yards or less. Plenty of nice loads available for many components. It was easy to establish, reliable, repeatable results. Winchester 296 (W296) is a high-density, spherical smokeless propellant, mainly intended for use with magnum revolver cartridges, such as .357 Magnum and .44 Magnum. This can lead to poor accuracy from lighter loads. The D&H Tactical magazine on the right shows no such issue with the 180-grain Rainier Ballistics FP, due to having shallower front ribs in the magazine. All this suppressor talk does not apply to 98per cent of the public. Size -- Quantity My TSAR 11.5 upper is flawless so far. It isnt hard to save yourself roughly a third of the cost of a box if youre used to buying quality ammunition. These guns have had mixed success. Either way, I think we can all agree both are good. Copyright: All Rights Reserved Available Formats Download as PDF, TXT or read online from Scribd Flag for inappropriate content Another option is to load your own. Links to published Data added. M80 ball projectiles with about 16.5 gr. However, it is listed in the 2017 and later printings. I'm loading .300 Blackout with 230gr bullets. Rather than having a steep shoulder and overbore case, like the 20 Vartarg (a 221 Remington necked down to 20 caliber), it has a relatively straight design that requires fast magnum pistol powders. Thanks, The data is all wrong anyway. Good subsonic loads fired out of a suppressed weapon should be quiet enough that you dont need hearing protection. The Latest In Reloading, Straight To Your Inbox Keep up-to-date on new products, trends and tips from the leader in reloading. It doesnt have to be fast or super accurate, just looking for a cheap plinking round, Lil gun will work for you. Your email address will not be published. The standard 5.56 NATO Magpul PMag on the left shows the second round nosed down in the magazine due to binding. The part is free, you are just responsible for any applicable taxes and Shipping/Handling. This website uses cookies to ensure the best experience possible. Known for its ability to deliver heavy subsonic bullets for standard AR magazines while cycling the action in suppressed applications, it also works well with lighter supersonic loads, offering a similarexternal ballistic performance to the 7.62x39mm Russian (check out my 300 AAC Blackout Review from September 2012). 180 grain rainier wedges cycled with 11ish grains of IMR4198 out of my PSA 10.5in suppressed with Syrac Ordinance adjustable gas block. RL-7 seems to work somewhat with subsonic loads in Carbine (which will work for pistol) gas systems with maybe a few bolt hold open (BHO) issues but that may not bother too many. I have firearms in all three and I know some will disagree but for me, I would never use lil' gun in anything! East Central. DuPont initially developed the first Improved Military Rifle (IMR) powders between World War I and World War II as miniaturized versions of US artillery extruded propellants. Once you reuse your brass, your ammunition costs will decrease even more. 20 gr will drive 55 gr to 62 gr .223 rounds OK. Peruse the Hodgdon Online data files and see for yourself. Eventually, they got their own 300 Blackout cartridge SAAMI approved in 2011. This may be ongoing and won't necessarily be complete for a while. The 300 Blackouts sleeker bullet has a higher. 5-2556 Review The needs of the various shooting disciplines differ greatly. (r.). Take your pick. There are many good reasons to reload for .300 Blackout. This data is intended for subsonic use in firearms with barrel twist rates appropriate to stabilize the bullets listed. Subsonic 300 Blackout. So heavy a bullet conveys a subsonic muzzle velocity and correspondingly softer report. Often powders that are way to slow to be used effectively in the 300 blk. Nosler BT 19 grs. An ideal solution for loading 357 Magnum, 44 Magnum, and even 410-bore shotshell ammunition, its high loading density provides optimal velocity. Accuracy was less than an inch with three shots. The typical range of bullet weights runs from about 110 grains all the way to 240 grains.For brass, you have some options. 300 AAC BLACKOUT (Subsonic Loads) Barrel: 16" Twist: 1-10" Primer: WIN WSR Bullet Diameter: 0.308" Case: REM Max Case Length: 1.368" Trim Length: 1.358" Accurate 1680 Bullet weight: 230 grains. 6.5 Creedmoor load development: Sierra 130 grain Tipped MatchKing (TMK) with H4350, Varget, Reloder 15 and Reloader 17, First impressions ofthe Modular Driven Technologies (MDT) HS3 Chassis system. The load data provided by Accurate Powders suggests a 16 barrel with 1:10 twist rate, Remington cases trimmed to 1.358, and Winchester Small Rifle primers. One of the benchrest guys I know asked how I liked my 300 BLK rifle. endobj Find load data for Winchester 296 propellant by clicking the button "Loads for this Powder". Early on, the claimed goal was to have ammunition prices on par with the inexpensive .223 Rem. <> Id urge you to do the same. . Anecdotal accounts from other shooters indicated this would provide the best accuracy with the 220 grain Sierra MatchKing (SMK). I explained to him he wouldnt really have a 300 BLK anymore. . If you cannot find one powder in stock, the other may function as a substitute, using the same load data. The subsonic will be quieter through a silencer, while the supersonic will obviously carry more energy for tasks such as hunting. February 15, 2022. On some guns, the short case can simply snap out from under the extractor if using a constant tension spring type ejector. Beside h110 or 296, anyone have another powder they use for 147 supersonic loads? Please take the time to read the disclaimer below and note that this data was gathered in a bolt action rifle and NOT a semiautomatic rifle.
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