So as a good friend of mine suggested, building an identical 5.56 rifle and 300 blackout rifle for training/target rifle and the latter for defense would be rather genius and save a substantial amount of coin – long term. It’s worth noting that many people have started to use the 300 blackout round in hunting applications, including bolt rifles, due to their ability to suppress the round well and impressive ballistics. Given the round’s increased cost, it hasn’t yet replaced the 5.56 as the target/plinking round of choice, but many prefer it in self-defense use cases. The round serves a particular purpose and is becoming more and more popular in the shooting community. 300 blackout for the better part of the Global War on Terror. Special Operations and specialized military units have been testing and using. 300 blackout is starting to give it a run for its money. The 5.56/.223 round will probably be the mainstay for the AR-15 platform for many years to come, even though the. Many people see the round as a great defense round and use them in their home defense rifles. In the last decade, the round has been heavily adopted by gun lovers and sportsmen alike. The 5.56 round is mainly known for its use in military and police applications. 300 blackout magazines are the 20 round Lancer Magazines. I use 30 round magazines for 5.56 nato and 20 round magazines for 300 blackout. Some magazines have 300 blackout marketed on them but my personal choice is to use two different sizes. Upgraded springs for 300 blackout is one and clearly separating your calibers because you do not want to mix these two calibers. There are really only two reasons to buy specific magazines for either caliber. There are 300 Backout specific magazines that are said to have a slightly stiffer spring to assist with feeding but I personally have never had any issue with standard 5.56 magazines. You can use any 5.56 magazine for 300 Blackout. One of the other interchangeable parts of the AR-15 is the magazines. Gorilla Ammunition has limited 5.56/.223 Ammo in stock as of this post! 5.56 vs 300 Blackout Magazines 300 blackout cost per round was beginning to drop to reasonable levels (.50-.80¢ per round). 300 blackout, even though before 2020, the. The 5.56/.223 are cheaper rounds than the. Many ammunition manufacturing companies are doubling down on all rounds, especially 5.56. 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.

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