HT25;
I have both barrels.
Neither one is bad for me to shoot, until, with the .45-70, the 405 goes above 1900fps and the 515 goes past 1650fps.
The 320 at 2000 is fine, just do not want a bunch of shots at the bench, but off hand is not bad.
The .44mag. is a slight problem at the bench with 310 bullets at 1400fps, but not offhand.
I am 65 years old, have had both shoulders damaged, a 3 1/2 hr complete rebuild of left rotator cuff ,and do not like recoil .
Yet the Handirifle , with the factory pad, does not get bad until things get really fast.
I cannot stand a 12ga, 2 3/4" high velocity shotgun shell , even with a pad.
If you reload,the obvious choice is the .45-70, much better selection of molds, bullets and powders.