Has anyone tried any of the S&B primers?

I have some of the magnum primers.They seem to work ok with single base powder,like 4350,but I get hang fires with Reloader-22 in my 300 Win mag.So they seem to be a little cold.

Sorry I'm slow to post, I don't check this page often..

I like the standard Large Rifle primers and use them in 22-250,.260rem, .308 ,30-06, 338-06, 6.5x284, 45-70.
Bigger cases and ball powder I use a hotter primer.