Re: fps needed to kill a Mountain Lion at close range??
From cat hunting. I've been on bow hunts, 243 with 105's, 270 with 140 HP game kings. They only leave 6mm and .277 holes. Pistol 45 cal with ball ammo.
From experience I saw I guy unload his 9mm into a pissed off cat that yanked his 220 pounds off his feet when he was trying to keep his dogs from getting ripped up by a shot out of the tree cat. He got rid of 9mm and 45's just shut them down
.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.