RWMC
Member
Is it safe to replace using small pistol primers with small pistol magnum primers ? Thank you for your help .
I think that I saw a article that stated a difference of 3,000psi between sp and magnums.
snip "A primer contains a primary explosive, which basically means that it’s unstable and volatile. Propellants are generally considered secondary explosives.They’re more stable and burn with a slower velocity". end snip.
snip "Because any variance in this initial “explosion” can cause a much bigger variance in the secondary charge ignition, it’s important to use the exact primer type called for in published load recipes". end snip.
snip "It’s not unheard of for different primer brands for the exact same load to create velocity differences of 100 feet per second or more and pressure variance of thousands of pounds per square inch. Lyman’s reloading manual references one primer test that resulting in variance of 9,300 psi just from swapping to a different primer brand." end snip
Be safe guys and gals.
I'm more of a interested observer.