Took the Buffalo Classic out this week. Wednesday my son and I found a semi-secluded spot in the Washington woods and clanged steel and split rocks. Large rocks secumb to the PileDriver. The base of the part on the right is still embedded in the bank. The PileDriver seperated the two pieces from it with one shot.

Today I got to shoot the load over a chronograph at a range. My PileDriver load ran 1433fps out of a guide gun for one shot and ran 1580, 1544, and 1556 out of the H&R 1871.
This barrel is probably longer than the round needs because the one fired from the 26" cowboy was in the 1500+ range.
Averaging the 3 rounds yields a mv of 1560fps for a TKO of 53.7 from the 1871 and 'only' 49.3 from the guide gun. That low tko # is twice what my 325g .44 mag load produces from a hand gun.
I am pretty sure it would penetrate any animal in the Americas end to end.