Not the cast lead bullets, they're all I shoot in my .45-70 Ruger #1S. I was just marveling at how a 500gr RNSP would feel on the shooter's shoulder close to 2700fps. My 2000fps gas-checked 405gr loads thump me pretty hard. Add 100grains of bullet and 700fps -
Talked to a guy who went from .458 Win Mag in his Ruger #1 to .458 Lott. He ended up buying a Dead Mule mercury recoil reducer to alleviate the pain and suffering.