Stalked and shot this 300# plus bear opening day of season this fall.
The firearm is a 45 colt built on a sized down version of my own falling block action.
The boolit is a 280 plain base with a .340" meplat, cast of 50:50 (ww-pure lead) at 1100FPS.
Range was 20 yards. Boolit went in thru the tricep muscle, and exited the mid ribs on the offside. Bear managed a short dash of about 30 yards and tipped over.
Cheers,
Stomp