Hey guys thanks for all the replies I love this fourm for picking other people's brain who are smarter than me...
I guees you all see where I was going with this, I was thinking what a weopon a 300BLK would be if it could push 30 caliber bullets at 308 speeds.
Hornady's 300 Whisper/Blackout 110gr Vmax Supersonic load @ 2375 fps - 16" Bbl
I wonder if they could make a "Superformance" load out of this and get another 200FPS that would put it at 2575 fps that's what a 308 would put it at at around 200yds out of a 24" barrel.