I use 550's in 9mm all the time. You will not experience any ill side effects. As always, don't start maxxed out on your loads. Work up.
My SIL has Ruger LC9 for a carry gun. I had a bunch of 550 primers I gave him, but can't find any loads with this primer. He wants to use 700X, any advise welcomed. Luckus
I use 550's in 9mm all the time. You will not experience any ill side effects. As always, don't start maxxed out on your loads. Work up.
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