Which powders for 300 Blackout? I'm new to reloading and unsure which powders will suit my needs for .300 Blackout. I would like to experiment with two different loads; 125gr supersonic and 220gr subsonic. I've read that A1680 is the best powder for cycling the subsonic rounds in an AR. Jul 17, 2020 · Cor-Bon subsonic data is: .300 Blackout 240 grain; muzzle velocity 1000 FPS, muzzle energy 533 ft-lbs. That is more muzzle energy than a 230-grain .45 ACP load yet includes the ability to fire more accurately and at greater distance while utilizing the same 30-round magazines you already have. Powder brows permanent makeup is a popular cosmetic procedure that helps individuals achieve fuller and more defined eyebrows. If you’re considering getting powder brows or simply ...I found a company that sells stainless steel barreled 300 Blackout uppers for less than $500. Way cheaper than buying a new .308. ... I have been experimenting with bullets for the 300 Blackout. I use Hogdon Lil Gun powder and have used two different Sierra bullets. Both are 125 grain bullets. The SPT Pro-Hunter (#2120) are short stocky …In the .300 Blackout, No. 11FS is capable of extremely high velocities with lighter bullets, making it the best propellant choice for shooters looking to maximize …300 BLACKOUT SUBSONIC 190 gr. SUB-X™ TAP® Item #80895 10.5" Noveske® 1:8" Muzzle 100 yds 200 yds 300 yds 400 yds 500 yds Velocity (fps) 1047 996 954 917 884 855 Energy (ft lbs) 462 418 384 355 330 308 Trajectory (inches) -1.5 0.0 -33.5 -105.2 -218.3 -375.9 8" LMT 1:8" Muzzle 100 yds 200 yds 300 yds 400 yds 500 yds Velocity (fps) 1041 …3,470. Location. North Texas. Mar 16, 2022. #6. Not sure about temp sensitivity since the 300 blackout typically uses pistol powder. I use Alliant 300MP in mine and get phenomenal accuracy and velocity from an 8" SBR. I run the 110 Barnes TAC-TX at 2315fps from my 8"'barrel. The below plate was shot at 300 yards.It is no wonder why suppressed .300 Blackout SBRs and AR-15 pistols have become so popular: There's not much within 300 yards that a longer-barreled .300 Blackout rifle can do better, especially when paired with the right ammo for the application. ... The powder was also designed for optimal cycling through AR-15s, and it proved true …7 Mar 2023 ... ... Blackout reloading project, Project Big Booty. I had a bunch of CFE BLK Powder hanging around and picked up some affordable 220g Berry's 300 ... Which powders for 300 Blackout? I'm new to reloading and unsure which powders will suit my needs for .300 Blackout. I would like to experiment with two different loads; 125gr supersonic and 220gr subsonic. I've read that A1680 is the best powder for cycling the subsonic rounds in an AR. for powder in the small Blackout case. An 8.3-grain charge of Alliant 2400 did the trick. Industries by resizing the .221 Remington Fireball to accept .308 bullets. The .300 Advanced Armament Corporation (AAC) Blackout resulted from a joint venture between AAC and Remington, the round SAAMI approved in 2011.I just got a 300 blackout with a can and i reload, was wondering if any of you guys know a good quiet powder for the 300 blackout shooting 220 grain round nose? was going to try vihtavuori 340, but its a pistol powder, its also the quietest powder suppressed for my 9mm. Any input would be greatly appreciated. Thanks.Jul 17, 2020 · Cor-Bon subsonic data is: .300 Blackout 240 grain; muzzle velocity 1000 FPS, muzzle energy 533 ft-lbs. That is more muzzle energy than a 230-grain .45 ACP load yet includes the ability to fire more accurately and at greater distance while utilizing the same 30-round magazines you already have. Jul 24, 2022 · Best 300 Blackout Powder for Accuracy. W296 is a fast-burning pistol powder that is popular among reloaders of the 300 Blackout cartridge. It is well-suited for use with heavy bullets and subsonic loads and is known for its consistent performance and low recoil. W296 is a versatile powder that can be used in a wide range of bullet weights, but ... Lil’ Gun was designed to fit, meter and perform flawlessly in the 410-bore. No more spilled shot or bulged cases. In addition, Lil’ Gun has many magnum pistol applications and is a superb choice for reloading the 22 Hornet. Made in the USA. Available in 1 lb., 4 lb. and 8 lb. containers. For example, 10.5 gr. Accurate 1680 behind a 208 gr. A-Max, 909 fps in the short barrel, 1089 fps in the rifle barrel. Which would suggest to me that, in the case of Accurate 1680 anyway, 8 inches of barrel does not give a complete burn. Faster powders like H110 or Li'l Gun may get a more complete burn. The 300 BLK shoots .308 caliber bullets. 3. Suppressor-Friendly: You can shoot heavier bullets subsonic. The subsonic capabilities of the 300 BLK make it ideal for use with a suppressed AR. 4. Great Barrel Life: With a .30-caliber bore and a modest powder charge, barrel life is outstanding. 5.Reloading 300 Blackout: Further Loki Testing. The Hornady 208-grain AMax and 9.4 grains of H110 was a tad too fast. The average velocity was 1,069 fps, but the load’s extreme spread of 96 fps put a few rounds above the sound barrier. The average group size measured 2.21 inches, with the smallest at 1.039 inch.8 Aug 2020 ... I load both lil gun and H110, and haven't noticed a difference in the two, those are the only two powders I've loaded with so far. I mainly ...For example, 10.5 gr. Accurate 1680 behind a 208 gr. A-Max, 909 fps in the short barrel, 1089 fps in the rifle barrel. Which would suggest to me that, in the case of Accurate 1680 anyway, 8 inches of barrel does not give a complete burn. Faster powders like H110 or Li'l Gun may get a more complete burn.i have a new 300 blackout 16" upper and i also have 110125, 220 grain projectiles. i am waiting for some powder to come in this week. i will ...Do you know how to make dishwasher powder? Find out how to make dishwasher powder in this article from HowStuffWorks. Advertisement As the cost of commercial cleaning products cont...For 300 AAC Blackout, that point is 9 inches of barrel. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber. ... because of the greater powder quantity. Since the 300 BLK stuffs a larger bullet into a cut down .223 ...Around 15 years ago, a co-worker suggested that I look into reloading as a hobby. I knew nothing about the topic at the time. He suggested going the buy once cry once route: spend lots of money up-front for decent equipment, and you won't have to worry about replacing it later. I ended up ordering a Dillon 550B.It wasn't cheap, but it's held up …For that reason, the 110gr .300 Blackout and 7.62x39mm loads have a flatter trajectory and retain more energy than the .30-30 out past 200 yards. The 7.62×39 has a little more kinetic energy, but the .300 Blackout has a slightly flatter trajectory due to higher ballistic coefficient of the .300 Blackout bullets. The Bottom Line on 300 Blackout Ammo. The 300 Blackout is a rifle cartridge that’s more powerful than the 5.56 when fired out of a barrel that’s less than 16 inches long. The chief advantage of 300 Blackout is its versatility. You won’t find a cartridge that “does it all” better than the 300 Blackout. 270 Winchester Short Magnum. 28 Nosler. 280 Ackley Improved. 280 Remington. 30 Nosler. 300 AAC Blackout. 300 H&H Magnum. 300 Remington SA Ultra Magnum. 300 Remington Ultra Magnum.300 AAC Blackout 110 Grain Barnes TAC-TX, 2,350 fps .223 Remington 55 grain, 3,100 fps ... in 125 and 135 grain weights. 125 grain Nosler Ballistic Tips and 125 grain Hornady SST bullets are also a great 300 Blackout solution. In terms of powder choices, you’ll use powders in the faster half of the burn rate spectrum, like H110, Lil …A faster powder such as 2400 would work better with a lighter bullet such as a 110 grain. The larger the case capacity relative to the bore, the ...This Powder for 300 Blackout was specifically designed for both .300 Blackout cartridges and magnum handguns. If you hold velocity to a really high …How is powdered activated carbon used? Keep reading to learn about powdered activated carbon and how it is used. Advertisement The use of activated carbon is pretty straightforward...1059. Remarks: COAL: 2.200 inches; 5-shot 75-yard group (inches): 2.17. .300 Whisper / .300 AAC Blackout / .300 Blackout (Subsonic Pistol Loads) reloading data with 10 loads. Using bullets from Lapua SP Mega, Cutting Edge Subsonic Raptor. Powders include Accurate, Alliant, Hodgdon, Vihtavuori, Shooters World.CFE BLK is a very versatile powder for both rifle and limited magnum pistol applications, best suited for .300 BLK subsonic and 7.62x39mm rounds. As a ball …The .300 Blackout (BLK) has been called everything from the 5.56 killer to the black mamba. ... The 30 cal bullet acts as a plug in the smaller diameter barrel and the faster burning powder of the 300 aac will cause catastrophic failure, EVERY TIME. The confusion is understandable, because the diameter of the bullet is considerably bigger.We place limited powder inventory for sale on a regular basis on our website. When we are sold out, we are sold out. We do not take backorders and our Tech Services team cannot take orders via email or phone. The max order quantity of any powder SKU is 5 and we will only accept one order, per customer, per calendar month with a maximum weight ... Alliant Powder 300-MP. Alliant Powder Reloder 10x. Alliant Powder Reloder 7. Hodgdon CFE BLK. ... Powder: BLACKOUT (Shooters World) Primer: Small Rifle Case: JAG. 300 Blackout 115 GR BER TGT FB Hodgdon Trail Boss .308" 2.050" 4.5 965 17,100 PSI 5.5 1,062 18,400 PSI 300 Blackout 125 GR NOS BT Hodgdon Trail Boss .308" 2.060" 6.1 1,060 21,300 PSI 300 Blackout 130 GR SPR HP …300 Blackout 115 GR BER TGT FB Hodgdon Trail Boss .308" 2.050" 4.5 965 17,100 PSI 5.5 1,062 18,400 PSI 300 Blackout 125 GR NOS BT Hodgdon Trail Boss .308" 2.060" 6.1 1,060 21,300 PSI 300 Blackout 130 GR SPR HP … Hodgdon CFE BLK is a spherical powder that was originally developed for subsonic 300 Blackout loads. This excellent rifle propellant utilizes the Hodgdon CFE formula, Copper Fouling Eraser, virtually eliminating copper fouling, clean burning and minimal muzzle flash. For competitive shooters and hand loaders seeking the perfect powder for ... 1-Cfe black with CCI 400,CCI 450 2-Accurate 5744 with CCI 400, CCI 41 3-Imr 4228 with CCI 450, Remington, 7 1/2 magnum primers 4- Hogdon lil gun with CCI 450, federal small rifle 5- n110 for lighter bullets n120 for high gr bullets with CCI 41, federal small rifle. I'm working up optimized loads for both subs and supers for a 16" bolt gun (1:7 ...12 Jan 2023 ... I reload 300 Blackout with CFE BLK, reformed .223 brass, and 2 different bullets! Let's see how they shoot. The Bottom Line on 300 Blackout Ammo. The 300 Blackout is a rifle cartridge that’s more powerful than the 5.56 when fired out of a barrel that’s less than 16 inches long. The chief advantage of 300 Blackout is its versatility. You won’t find a cartridge that “does it all” better than the 300 Blackout. Product – 300 BLK admin 2021-04-27T07:51:30+00:00 300 BLK 144gr AM FMJ Everything from the propellant, brass case and 144gr FMJ bullet of this 300BLK round is made in Australia, by Australians, to deliver an outstandingly accurate low cost round for high volume shooting at the range or in competitions.Powdered sugar, also known as confectioners sugar, is gluten-free. The only ingredients in powdered sugar are cornstarch and sugar that has been finely ground. The ratio of cornsta... Write a review. $47.99. SKU: 4781658. Designed specifically for .300 AAC Blackout cartridges, Hodgdon® CFE BLK Smokeless Reloading Powder pours easily for accurate measurements, and contains a proprietary Copper Fouling Eraser... This ammunition was loaded on the Hornady Lock-N-Load AP 5-station progressive reloading press: For die stations, above we have: Sizing (expander ball only, new brass) Priming (bottom), no die used (top) Powder charge. Bullet seat (I showed at station #5 in the video) empty.In this video I will show you how to reload 300 AAC Blackout Ammo. I will be going over the basics of how to reload this ammunition. This is a step by step... I can tell you that my experience is that once near compressed or compressed in 300BLK the Extreme Spread (ES) can get great. Yes you can pack more powder in and get a higher Max FPS but if you chrony 5 rounds you might have something ridiculous like 2465fps and then 2250fps back to back. That would kill SD as well. Are you wondering what's the difference between powder vs. liquid makeup? Find out what's the difference between powder vs. liquid makeup. Advertisement Let's face it. The idea of ...Substitute Products. Missouri Bullet Company Cast Lead Bullets 300 AAC Blackout (309 Diameter) 245 Grain Hi-Tek Coated Round Nose Flat Point Box of 250. $64.99. Add to Cart. Missouri Bullet Company Cast Lead Bullets 30-30 Winchester (309 Diameter) 165 Grain Hi-Tek Coated Round Nose Flat Point Box of 250. 4 Reviews.The power and range of these rounds vary depending on barrel length, projectile weight, powder used, etc. ... This is a significant difference in velocity and energy with the 5.56 having a higher velocity and the 300 Blackout having more energy. At half of our maximum distance, 250 yards, the 5.56 round will have a velocity of roughly 1,793 …300 BLACKOUT SUBSONIC 190 gr. SUB-X™ TAP® Item #80895 10.5" Noveske® 1:8" Muzzle 100 yds 200 yds 300 yds 400 yds 500 yds Velocity (fps) 1047 996 954 917 884 855 Energy (ft lbs) 462 418 384 355 330 308 Trajectory (inches) -1.5 0.0 -33.5 -105.2 -218.3 -375.9 8" LMT 1:8" Muzzle 100 yds 200 yds 300 yds 400 yds 500 yds Velocity (fps) 1041 …The .300 AAC Blackout (designated as the 300 BLK by the SAAMI [1] and 300 AAC Blackout by the C.I.P. [2] ), also known as 7.62×35mm, is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. The cartridge yields increased performance in shorter barrels and effective subsonic ...Jul 24, 2022 · Best 300 Blackout Powder for Accuracy. W296 is a fast-burning pistol powder that is popular among reloaders of the 300 Blackout cartridge. It is well-suited for use with heavy bullets and subsonic loads and is known for its consistent performance and low recoil. W296 is a versatile powder that can be used in a wide range of bullet weights, but ... This new spherical propellant was designed expressly for the 300 Remington AAC Blackout cartridge. It provides full function of AR type rifles throughout the range of bullet weights, and is perfect for those sub-sonic reduced loads. In addition to being outstanding in the 300 Blackout, it performs beautifully in many smaller capacity cartridges, in particular, […] 18 Apr 2023 ... CFE BLK powder was designed for the 300 Blackout, but can be used in the 450 Bushmaster, 500 S&W magnum, 350 Legend, and a lot more.The velocity vs powder charge relationship was quite linear throughout this whole range. You can see that the 7.2 gr load that's right at the supersonic transition is very inaccurate as expected. The 5.6 gr loading on the surface seemed to group well and coincided with the bottom elevation adjustment of the scope (it's on a 20 MOA rail) at 50 ...With the carbine gassed 300 BLK you are really limited as far as subsonic loading, but you should do OK with supers. The 4227 will do fine with the Lee AK 155 grain boolit. With the blackout and supers I just use starting jacketed data, and it usually is pretty close to accurate if I can get it to cycle.There's a narrow band of powders that work well with the .300 Blackout. If you're trying to create supersonic loads with long, 150-grain or heavier bullets, you'll find powder space is...This new spherical propellant was designed expressly for the 300 Remington AAC Blackout cartridge. It provides full function of AR type rifles throughout the range of bullet weights, and is perfect for those sub-sonic reduced loads. In addition to being outstanding in the 300 Blackout, it performs beautifully in many smaller capacity cartridges, in particular, […]300 AAC Blackout Powder Through Expanding Die 300 AAC Blackout Load Data Self-Hosted Help Desk Software by SupportPal. Categories. 2. General 20. Custom Services 27. Dealers 10 — Online Dealers 16 — Outside USA (export) Dealers ...6 Mar 2017 ... ... 300 Blackout. Using AA-1680 powder I have a load that performs and cycles subsonic suppressed and unsuppressed. Looking for a first aid kit ...Speaking only pistol powders, H-110 and AA-1680 are slow burning. Compared to rifle powders, they are fast burning. The burn rate chart lists all powders. Let me try again, IMR-3031 is too slow burning of a powder for 300 Blk. You need to use a faster powder like H-110 and AA-1680.Feb 9, 2024 · Discover the best 300 Blackout powders for precision and power. Explore top-rated powders like CFE BLK, Alliant Powder, Hodgdon H110, and... Mar 2, 2022 · 3,470. Location. North Texas. Mar 16, 2022. #6. Not sure about temp sensitivity since the 300 blackout typically uses pistol powder. I use Alliant 300MP in mine and get phenomenal accuracy and velocity from an 8" SBR. I run the 110 Barnes TAC-TX at 2315fps from my 8"'barrel. The below plate was shot at 300 yards. Gun Talk’s Chris Cerino offers a thorough walkthrough and comparison of Hodgdon Powder’s offerings for reloading 300 BLK rounds. If you have any interest in...300 Blackout vs 5.56 conversation is complicated. Despite using the same case and being shot out of AR-15, each excels in different facets. ... Since it’s a smaller round, requiring less material to construct its bullets and a smaller powder charge to launch it, it was also less expensive—particularly compared to its .30-caliber predecessorI've got a range of powders sitting on my bench, and none of them are in my recipe book for 300 Blackout loads, so I'm going to need to buy something new. I figured I could get some recommendations that might steer me in the right direction before going out and dropping $30-$35 on a pound of powder that I don't like how it meters, or performs. Printed from Shooter's Reference on 05/15/2024: https://www.shootersreference.com/reloadingdata/300-aac-blackout/ (7.62 x 35 mm) (300 BLK) 300 AAC Blackout 135 gr. Sierra Jacketed SP BC: 0.390 150 gr. Sierra MK, Hornady IB BC: 0.417 2.090” min OAL SD: 0.203 2.095” min OAL; 2.135, 2.180 SD: 0.226 Max type Start Velocity Press. Load Velocity Press. unit type Start Velocity Press. Max Velocity Press. unit rifle Powder Grains FPS Grains rifle Powder Grains ....300 Whisper / .300 AAC Blackout / .300 Blackout (Accurate Data) reloading data with 74 loads. Using bullets from Hornady V-Max, Sierra FMJ, Nosler B-Tip, Sierra SPT, Barnes T-TSX, Sierra HPBT MK, Sierra FMJBT, Berger BTTLR, Berger THOTM. Powders include Accurate, RamshotData like Hodgdon, is problematic because the “subsonic data” is not related to pressure, Max load is capped at 1050 fps. Most 300 Blackout data is geared toward AR’s and powder that will cycle the action. This leaves about 20 good powders used in something hand fed off the table. Look for 300 whisper data.Hodgdon CFE BLK is a spherical powder that was originally developed for subsonic 300 Blackout loads. This excellent rifle propellant utilizes the Hodgdon CFE formula, Copper …Cor-Bon subsonic data is: .300 Blackout 240 grain; muzzle velocity 1000 FPS, muzzle energy 533 ft-lbs. That is more muzzle energy than a 230-grain .45 ACP load yet includes the ability to fire more accurately and at greater distance while utilizing the same 30-round magazines you already have.I just need to get off my butt and make some .300 AAC brass from .223 brass. Been feeling a bit under the weather lately, so just don't have the motivation to do anything. I've used Unique and Sierra 220 gr RN lightly tumble lubed with 45/45/10. 7.0 gr gave 1044 fps in a 10.5", and 844 fps in a 16" bolt action.Oct 26, 2021. #1. I thought I would share my experience with powders that work with the cartridge. So far the best overall powder is N110. N110 is very clean and makes great subsonic and full power loads. It has performed flawlessly in my 7” and 16” barrels. Running with suppressors it really is great. Little to no gas residue and reduced ...When it comes to powder coating, selecting the right company is crucial. While some individuals may attempt to DIY their powder coating projects, there are several advantages to ch... Which powders for 300 Blackout? I'm new to reloading and unsure which powders will suit my needs for .300 Blackout. I would like to experiment with two different loads; 125gr supersonic and 220gr subsonic. I've read that A1680 is the best powder for cycling the subsonic rounds in an AR. Cntrl23. 148 posts · Joined 2018. #17 · Apr 12, 2019. The quietest I’ve shot has been the 220gr Freedom Munitions HUSH 300 blackout. Luckily, they had it at Gander Outdoors last summer for about $45 a box on the shelf during a sale. It’s $59.84 for 50 rounds from Freedom Munitions.Tested Loads. After some testing and trials, I settled on the following components for my subsonic 300 Blackout loads for this article: Berry’s 220 grain 300 Blackout bullets. New Starline 300 Blackout Cases. Wolf Small Rifle Magnum primers. 9.0, 10.0 grains Hodgdon H-110 powder (See chronograph data below)Jul 24, 2022 · Best 300 Blackout Powder for Accuracy. W296 is a fast-burning pistol powder that is popular among reloaders of the 300 Blackout cartridge. It is well-suited for use with heavy bullets and subsonic loads and is known for its consistent performance and low recoil. W296 is a versatile powder that can be used in a wide range of bullet weights, but ... As far as powder goes, you’ll need to find something appropriate for the loads you’re intending to make. This could be Hodgdon H110, Hodgdon CFE Black, Accurate 1680, Reloder 7 or a variety of ...8 Mar 2017 ... Testing some powder coated bullets with IMR-4227 in my 300 Blackout.
300-MP 17.5 2075 19.5 2256 A-5744 17.6 1919 19.6 C 2117 H110 18.2 2213 20.2 2415 300 AAC Blackout uggested Bullet se Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. *Recommended Powder C Compressed Load 2 110-grain TAC-TX FB Sectional Density .166 Ballistic Coefficient .289 C.O.A.L 2.250” Powder Minimum …. Karthus urf
Jun 18, 2022 · CFE Pistol was NOT made for the 300 Blackout. It's a faster burning Pistol powder. Hodgdon CFE BLK was made for the 300 Blackout. The "CFE" in the names only refers to "Copper Fouling Eraser"elements being in the powder. You're gonna put your eye out! Don't mess around if you don't know WTF you're doing. The .300 AAC Blackout also burns powder faster than its .30 caliber siblings. You can also easily suppress a rifle that shoots this round to gain even more advantage. In terms of recoil, you’ll experience about 9 pounds to the shoulder. When it comes to penetration, this caliber performs well.Testing some IMR 4227 out in the 300 Blackout today. Using some Cast Lee 309-230 Powder Coated Rounds, sized to .309. Very accurate and spectacular numbers. Range Session Starts at 8:38 243 OutdoorsMy name is Josh and I love Firearms and Freedom. I started 243 Outdoors as a YouTube Channel back in 2015 and have […]10 Jul 2016 ... 230 grain subsonic powder coated cast lead. 300 blackout 1035 fps. From my new build. function, feed, and target test success!Using 125gr bullets and 16” barrels to be as direct as possible, the .300BLK can, using a full third less powder than 7.62×39, match velocity. A quick look most reloading manuals will show that ...Cntrl23. 148 posts · Joined 2018. #17 · Apr 12, 2019. The quietest I’ve shot has been the 220gr Freedom Munitions HUSH 300 blackout. Luckily, they had it at Gander Outdoors last summer for about $45 a box on the shelf during a sale. It’s $59.84 for 50 rounds from Freedom Munitions.The .300 Blackout (BLK) has been called everything from the 5.56 killer to the black mamba. ... The 30 cal bullet acts as a plug in the smaller diameter barrel and the faster burning powder of the 300 aac will cause catastrophic failure, EVERY TIME. The confusion is understandable, because the diameter of the bullet is considerably bigger.Performance Characteristics: 300 Blackout vs 308 Win. ... The 308 is a medium-sized rifle cartridge with a powder charge somewhere around 36 to 46 grains with a typical 150-grain bullet. Common loadings include bullet weights between 150 and 180 grains. A 150-grain bullet leaves the muzzle of a 20-inch barrel at roughly 2,750 feet-per …Features. From Hodgdon Powder Company, the CFE BLK Smokeless Rifle Powder was specifically formulated for .300 Blackout cartridges. This powder is known to be one of the best powders available for subsonic .300 Blackout rounds. The main concern in using .300 Blackout powders is having any unnecessary weight to your rifle.There's a narrow band of powders that work well with the .300 Blackout. If you're trying to create supersonic loads with long, 150-grain or heavier bullets, you'll find powder space is...The short casing of 300 Blackout facilitates the powder to burn quickly and allows gas to build up much more effectively in a short barrel. This gives 300 BLK an edge over 5.56×45mm to achieve much greater muzzle energy when fired through a short barrel. Greater muzzle energy means greater potential in lethality.Reply reply. T800_123. •. A lot of people are going to say CFE BLK and 1680. They work great, but in my experience as well as a lot of people over at 300blktalk they're both noticeably louder when running suppressed subs then other powders. IMR 4227 is my personal favorite, I achieved some pretty good consistent loads and it also is the ...In this video I will show you how to reload 300 AAC Blackout Ammo. I will be going over the basics of how to reload this ammunition. This is a step by step....