Quote Originally Posted by Art View Post
Standard commercial ammunition made by Remington and Winchester 405 gr. bullet at + or - 1200 fps are low pressure and supposed to be safe in those rifles and probably are. I don't know if I would take the chance though. I agree with Dick Hosmer, the very mild Cowboy Action loads are probably the best bet. Some people only shoot black powder in the old guns and I think I'd back off a bit if handloading black powder from the 70 grains just to be on the safe side. You don't know what one of those guns has been through.

I let a few 70 grains of Goex FF under a 405 Lee HB bullet off but mostly stick with 65 grains in my 1873 and it shoots really well.