Quote:
Originally Posted by mikld
Primers do make a difference. Magnum primers would raise pressures quite a bit, depending on several factors. While a normal answer would be "go ahead and shoot them", which ain't all wrong, I'd say put those cases loaded with magnum primers away until you have more experience and understanding of primers and pressures. Then you can decide for yourself what you should do with them...
This is a pretty common question on forums and if you googled "can I use magnum primers instead of standard?" you'd get quite a few hits, with reference to several forum threads...
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Citation on 'quite a bit'?
I personally have switched to only magnum primers to keep my inventory simple. I have not seen any statistically significant difference in accuracy or muzzle velocity as measured by a Magnetospeed V2 chronograph. The difference in primers would only be a concern if you were at the limit with regular primers.