Originally Posted by
longbow
Yes, that load will get your attention! Not max but it'll get your attention.
When I started with my first .45-70 it was a converted Siamese Mauser and I was an idiot that wanted a big boom. I am also know as being frugal (cheap!) so I looked for the smallest powder charge that would provide the most velocity. My old Hornady book showed a load using IMR4227 under a 500 gr. "J" bullet that was pretty impressive. I used that load under the Lyman 457125 500 gr. RN. To say the recoil got my attention would be an understatement!! That fast powder resulted in more than somewhat uncomfortable sharp recoil!
I rethought my position and decided to try the slowest powder listed which was IMR4320. What a difference in recoil for same or even better velocity! Much more of a push and not unpleasant at all. Subsequently I loaded down a bit after being beat sensless! I picked up a Marlin 1895 and kept loads at or below max in that... mostly below max.
My favourite boolit became the Lyman 457124 385 gr. round nose. It shot well in both guns and less recoil than 405 or 500 gr.
Longbow
Yes, listen to the advice. There is little need to load really hot even in a Marlin or Ruger unless you are wanted to stop a charging Alaskan brown bear.