No, the guns are different. The first one is my .69, shooting a 482gr. round ball with 140gr. 2F GOEX.
The second picture, B&W is of me back in about 1978, shooting a .58 calibre Hawken Taylor built, having
34" bl. of 1 1/8" thickness, weighing over 11 pounds, and shooting a .575" round ball weighing 285
gr. with 120gr. (might have been 140gr.) 2F GOEX. The weight difference of the rifles and ball weight shows
in the relative recoil. The .58 kicks a LOT less than the .69.
As to actual killing power of a round ball. This seems to be suspect by many people, and especially amongst
the proponents of conical bullets for big game hunting.
I watched a hunter shoot and kill a big bull moose that was 170yards distant, by laser range finder.
Had I been his guide, I would not have allowed him to shoot, as I had observed him at the camp previously,
barely able to keep 3 consecutive shots on an 11" x 8" target at 100 yards, from a rest.
Shoot he did and that moose took off like a horse out of the starting gate at a race.
The moose dropped 40 yards into his run, mid stride, after discovering it was dead.
The ball used, was a .530" Hornady swaged ball and the load was 100gr. of a phony powder you should
NEVER use in any muzzleloading gun. However!!!!
The ball hit perfectly, between ribs on the impact side, through the left lung, heart and right lung, through a
rib and stopped against the hide on the off side. It was indeed, a lucky shot for this hunter and it certainly
displayed a killing power I had not figured for that calibre rifle. The ball was not deformed, however it made
a hole over 1/2" in diameter though both lungs and the heart. Result, dead moose.
Taylor's and others suggestions being your maximum range is that at which you can keep your shots on a pie plate
from the position you use when hunting, rest or offhand. This is quite fair, I think in describing maximum range. I might
add, as long as you are using a rifle capable of humane kills of THAT game at that range.