mmb617
Member
I've read a lot about the difference between standard and magnum primers and there seems to be no agreement. Some guys say you should download a bit when using magnums while others say the two are pretty much the same and it's not necessary to change your load.
I went to buy some primers today and all they had in SPP and LPP were magnums so I bought them. I'm loading 9mm and .45 acp and have always used standard primers Winchester, CCI and Federal. I see no real difference between the brands I just don't like the way Federals are packaged.
I figured I'll make up some test rounds in both calibers using the magnum primers and chrono them. I'm not near max loads so I'll use the same load as I do with standard primers since I already have chrono data for them. That way I'll have a valid comparison.
I should have my answer to the question in a couple days. Of course that doesn't mean anybody else will agree with what I find, but this is just for my own information anyways.
I'm also curious about the difference between SRP and SPP. Most of what I've read says the rifle primers are harder and some pistols won't ignite them, otherwise they are the same. Which makes me wonder what would happen if I used magnum SPP in my AR? Could this open the door to a slam fire issue?
When supplies are tight as they are now it would be good to know what substitutions can be make safely.
I went to buy some primers today and all they had in SPP and LPP were magnums so I bought them. I'm loading 9mm and .45 acp and have always used standard primers Winchester, CCI and Federal. I see no real difference between the brands I just don't like the way Federals are packaged.
I figured I'll make up some test rounds in both calibers using the magnum primers and chrono them. I'm not near max loads so I'll use the same load as I do with standard primers since I already have chrono data for them. That way I'll have a valid comparison.
I should have my answer to the question in a couple days. Of course that doesn't mean anybody else will agree with what I find, but this is just for my own information anyways.
I'm also curious about the difference between SRP and SPP. Most of what I've read says the rifle primers are harder and some pistols won't ignite them, otherwise they are the same. Which makes me wonder what would happen if I used magnum SPP in my AR? Could this open the door to a slam fire issue?
When supplies are tight as they are now it would be good to know what substitutions can be make safely.