For those wanting the bare minimum of overpenetration for indoor use at home--
I just ran across these: http://www.hornady.com/store/223-Rem-gr-NTX/
Hornady states 4000 fps in 24" barrels, but we'd obviously lose a bunch of it from an 11.5" tube. I imagine it'd still be rather explosive at close range though. I might get some to try just for the heck of it.
ETA: Oh, I almost forgot--- Being a lead free round it'd be so much safer for the environment. You'd hate to shoot, shovel, and shut up, and then have some poor possum dig up a two legged varmint and get lead poisoning.LOL Oh the horror! What if the possum died and got ate by a buzzard?
J/K!
I just ran across these: http://www.hornady.com/store/223-Rem-gr-NTX/
Hornady states 4000 fps in 24" barrels, but we'd obviously lose a bunch of it from an 11.5" tube. I imagine it'd still be rather explosive at close range though. I might get some to try just for the heck of it.

ETA: Oh, I almost forgot--- Being a lead free round it'd be so much safer for the environment. You'd hate to shoot, shovel, and shut up, and then have some poor possum dig up a two legged varmint and get lead poisoning.LOL Oh the horror! What if the possum died and got ate by a buzzard?
J/K!

