roflmao, Oh belive me Ruger4570 I have found that out... Duh !...dummy me first 10 rounds I ran through it when I was sighting in my scope were PMC 45-70 GOVT 350 GN +P+...yeah really, I didnt notice it till I finished sighting in and wonder why I had busted my eye (my fault creeping up on the scope when in the shooting rest) and my shoulder acked like heck.....
LOL, oh yes I found out the hard way....
I am loading reduced loads and will not load the max, want to enjoy it when just shooting, then use a nice hunting load for business....
Thanks again.....