- Joined
- Mar 3, 2009
- Messages
- 148
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- 19
There is a little more recoil compared to 5.56 but less than .308 . Also, the round is A LOT louder that 5.56. To me, it sounds a lot like a .308 AR, at least using supersonic ammo. I have been waiting till after Christmas to purchase a suppressor for it to test the Decibels of the rounds both super- and subsonic.
I hate to resurrect this thread, but I didn't want to post until i had a good amount of rounds through my 300 BLK upper. I have an 8.2" upper chambered in 300 blk, and have got about 500 or so rounds through it now. I must say that i am impressed with how the round shoots and on the contrary to what thehoyt was saying, i find it to be very quiet. Especially for the barrel length. My 11.5" 5.56 upper sounds significantly louder. The recoil IMHO is still less than 7.62x39 out of my WASR.
I load for 300 Blk and convert all my brass, but my experience is not scientific. But i must say when i shoot water jugs and steel back to back with people firing off 5.56 there is a very significant difference. The 300 blk seems to hit harder with the 110 gr vmax loads i have than any weight bullet in 5.56. First time onlookers give the "what was that?" question when it swings the steel because of how different the impact is.
I must say that overall i am happy with my build. Especially being from MA where 6.8 spc and other rounds take up standard AR Mag capacity, and post ban mags are limited to 10 rounds. Interchangeability is important for me because now i only have 1 lower that has the old .gov stamp of approval. I can't really be scientific as far as ballistics go, but in my experience it gives a very good amount of energy given the short barrel length. Any naysayers should really shoot it back to back with some other rounds, and if it doesn't do anything for them then at least they tried. But for me, it does exactly what i want/need it to do.