Ran out of Federal Large Rifle primers,so did Sportsmens Warehouse here in Reno. So I bought W-W LR . With Fed its my known coyote load . I wonder if any difference with W-W primers ?
I generally do not change my charge when switching between Fed 210's and Winchester LR primers unless I'm at the ragged edge of the pressure range...which is rare. I do back off a grain or more if I'm switching from standard to magnum primers.How much should you drop your charge by when trying new primers? Do you find that a complete load work up is necessary after switching to a new primer?
CCI250 has been my go to primer followed by 215M, WLRM, and 9 1/2M for my magnums but the 9 1/2 M really surprised me. I was able to get the ES and SD in single digit after the refinement and yielded a 4x4 Montana muley buck at 425 yards on its first outing.
YMMV! Last year I was playing around with different primers with same powder charge during my .300 WSM and 215 Berger load development. Nothing scientific but here are my initial as-is results ...
CCI250 has been my go to primer followed by 215M, WLRM, and 9 1/2M for my magnums but the 9 1/2 M really surprised me. I was able to get the ES and SD in single digit after the refinement and yielded a 4x4 Montana muley buck at 425 yards on its first outing.