300 AAC Blackout in a standard 16″ barrel. Here’s a small table that compares the ballistic performance of 5.56mm NATO and. There is a 1,000 feet per second discrepancy in the two rounds, but that’s expected with such a large grain weight difference. The 5.56mm 55 gr round had 191 ft-lbs at the same yardage. 300 blkout 125 gr round had 993 ft-lbs at 100 yards. 300 blackout really shines is out of a short barrel. The bullet drop becomes much more substantial at range with the. In testing fired from a 16″ barrel, it was shown that 300 blackout had nearly double the ft-lbs on the impact that a 5.56 round had 200 yards and 300 yards.
The round can cover more yards and keep velocity better than its heavier counterpart. What testing has found is that 5.56mm at 500 yards had a high-velocity thanks to the lower weight of the 5.56mm NATO bullet. Some common grain weight you’ll see for 300 blackout is:īoth 5.56 and 300 blackout have been extensively tested. 300 BLK bullet itself, you’ll notice the size difference of the bullets immediately. Some of the most common grain weights for 5.56mm NATO bullets are: There are different grain weights available for both the 5.56mm and the. Specificationįrom the above table, we can see that both cases have the same overall length. 300 Blackout is a necked-down version of. Both bullets have rimless and bottleneck case types, and both are used in rifles and AR pistols. The casings for both the 5.56mm NATO and. Beat the 5.56m NATO round, achieve better-suppressed sound levels, and rely on the AR-15 platform. Advanced Armament Company (ACC) wanted to achieve the trifecta. The entire premise of the 300 blackout round was to provide a round with better ballistics from a short-barreled rifle. Which, if you can’t tell, is a tall order! Since the MP5SD was 9mm, the end-users, typically Special Forces, needed the 300 blackout to have more power, similar sound suppression, and be AR15/M4 compatible. The premise of the 300 blackout round was to find a round that would be better in a sub-gun, namely the H&K MP5SD, which is a 9mm submachine gun. What’s the best round 5.56 or 300 blackout?.
5.56 vs 300 Blackout Terminal Ballistics.Methodical load development by Discreet Ballistics has created a system which will minimize point of impact shift allowing the shooter greater confidence when it’s time to hunt. The Discreet Ballistics’ two load system was conceived so that the shooter of subsonic ammunition can practice with a less costly Target load, and hunt with a premium load utilizing the Selous Machined Expander. Hunting Loads utilize the Selous Machined Expander 188gr solid copper projectile which expands to over three times its original diameter upon entering fluidĮffective range is usually within 75-100 yards due to dramatic bullet drop past 100yds – Muzzle velocity is typically between 900-1050fps depending on the barrel. Industry leading seating depth consistency. Powder charges consistent to within 0.1 grain
Utilizes brand new Jagemann Brass with our headstamp (Apex Subsonic)
Discreet Ballistics gives its customers the option of choosing these loads optimized for either 16″ barrels or 5-11” barrels and bolt action rifles.
#300 aac subsonic software
This projectile was designed using state-of-the-art ballistics modeling software to maximize stability at subsonic velocities. The Discreet Ballistics 300 AAC Blackout 188gr Selous Machined Expander is a subsonic hunting load that incorporates a machined copper 30 Cal projectile (the Selous bullet) which expands at subsonic velocities above 750 feet per second.
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