I've got a Trapper Carbine, 16inch barrel in 45 LC. This is an incredibly handy little rifle. I hand load for this rifle. I load a Speer 200 gr. "Flying Ashtray" hollow point to an estimated 1650 FPS. I live on a 500 acre ranch not far off a major highway. Unfortunately people dump off dogs all the time in the area. Occassionally they show up half starved and mad at the world (probably why they were dumped to begin with). I was forced to dispatch what a looked to be a cross between a Rotweiler and a Bull Mastiff. The bullet impacted him dead center of his chest from 20 yards. He rose straight up on his hind legs and rolled over on his right and never moved again. While the entrance wound was impressive (there was no exit) there was very little blood, indicating that he was quite literally dead before he hit the ground. He weighed out at an impressice 140lbs! The trapper is a great pickup/ranch rifle!!