10.5" "pistol" vs 14.5" carbine for bedside duty

[Warp]

Could you define "proper tissue damage" and explain exactly what a 14.5" does to promote "proper tissue damage" that a 10.5" or 11.5" won't at home-invasion ranges? From my calculations, a 11.5" has about 970 FPE compared to 1070 FPE from a 14.5" at 5 yards. So by the same logic, a 14.5" only has "proper tissue damage" to about 50 yards. Typically, bullets, like one would use for self defense, have a specific velocity window which they expand/fragment as designed. Either/or will be in the proper range at home defense ranges.

The guy's HD AR is a 7.5" with varmint rounds.

I think that pretty much says it.

[Captiva]

Hey guys, got some money to burn...

I respectfully suggest to Stop pondering over 3 to 4" of metal and burn that money on some CQB training.