Availability & Costĥ.56mm is a widely used round and can be purchased from your local gun store or almost any retailer that sells ammo online.

Still, it had to be mentioned to be thorough. 300 blackout offers is almost not worth mentioning. The 5.56 round has minimal recoil increasing that recoil only slightly to get the performance the. Bullet Typeĭue to the 300 BLK bullet’s larger grain and increased powder, this round’s perceived recoil is stronger than the standard 5.56mm bullet. 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. To compare the performance of bullets, we will compare both bullets in all sections that are mentioned below: Since 5.56mm bullets were small, high velocity, and provided good thermal ballistics, so much so that it became the standard bullet that is still used by much of NATO forces.

Supersonic vs subsonic defense 300blk