This is a discussion on 77 grain .223 a passable enough replacement? within the M16 AR15 forums, part of the Rifle Forum category; Could a 77 grain .223 in a 1:7 twist 20" heavy barrel be a passable replacement for a .308? Say a "poor man's .308".
Thanks for the advice. I'm trying to simplify my weapons down to commonly available ammo, as few models as possible, and as much parts sharing as possible. I rarely even deer hunt with the .308 any more, and mostly use shotguns.
If your considering the 6.8spc I would encourage you to look into the 6.5 Grendel as well. I am told that the intent of the Grendel was to replicate the 6.5 swede in an AR platform. All my friends that have them are VERY pleased with them.
Put your rounds in the kill box and it don't mater what size they are....
Another cop buddy and I talk about this quite a bit. Up to a point, yes. But it's how fast they go, and what they can still do while they're bleeding out that matters.
The mope that attacked the Detroit precinct had a solid 8 seconds from the time he was hit in the chest 'till the time he collapsed. He had at least 2 officers in his sights (but for some reason didn't pull the trigger).
No easy answer, but I tend to go with bigger is better whenever possible
I've put together a load using the 70gr. Barnes TSX in a Colt HBAR 1:7. That is my 5.56 "hunting" load. It goes through full caliber expansion and penetrates 14" of tightly packed wet newspaper (IIRC), more than enough to punch through even a big whitetail.