Federal Primers

[BP707]

I was given some reloading supplies some of which was primers, I got about 10,000 Federal gold medal Large rifle magnum primers GM215M. I want to reload some 7.62x39 but I looked on Federal's website and didn't see anything about what caliber these would work on. Some help please

[Sub95]

magnum primers are for slow burning powder.

But its not to say you cant use them with a faster powder, whatever powder weight you will use take .5 grains of powder away to start out with ( dont start at max powder weight ), then work up the load and check for over pressure signs.

[Divernhunter]

Mag primers are also for ball powders. I use them in all my loads(made for hunting and play) and have never had a problem in many years of loading. Use them in any large rifle primer application you want.