subsonic suppressed in an AR is what it was designed to be
Had the same problem with my .458 SoCom and 350gr RN bullets. At 1500 fps the ones that missed bones went right on through a bison, like armor piercing.If you want to use .300BO for hunting you need to ENSURE that you are using a projectile that WILL expand at the velocities.
Story to back this up:
I harvested a deer with .300BO using the wrong spire point round. Penetrated chest at a front angle, traveled through body and exited rear ham. There was NO expansion and no bloodshot meat. Clean through and through lengthwise on the animal. Turns out this bullet needed to be 2200-2800fps to properly expand. My rounds were at muzzle around 1800fps and at 100y they were estimated to be around 1500fps. Way below expansion point.
To my benefit, the animal ran 30y and dropped due to a direct lung puncture and not hitting any lower abdominal cavity guts. Chest cavity only and pink foam by the time I approached. I got lucky.
If I ever do it again, I'll hunt close and use subs for a clean shot that are designed to open up at those velocities.
I totally agree. For hunting with a small frame AR rifle I think the 6.5 Grendel and the 6.8 SPC are far better choices. You limit yourself with a .300 blackout. Although if you have ninja skills and sneak up close it enough to slap a deer on the butt then do it.
Thats amazing how little power it takes to stop a deer like that. Now I'll be embarrassed to pack my 300 WM out there.
Ive never shot the 300 bk but if I'm reading the charts right it drops about 30 inches at 200 yards? If by chance I take an AR up for deer this year, I think I'll stick with the 375 socom. Not a bad brush gun.