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Serious question,

You should be ok. Everything ive read about mag primers in regular loads says you should reduce by 10% and work back up looking for pressure signs.
The magnum primer will be higher pressure than a standard but if you start low and work up it won't be an issue. Just remember if you swap back to a standard primer later to start the load workup again. What was an accurate load might not be anymore
You're fine running what you got, especially if you're going just over minimum.
Thank you guys.
 
Agree with benjamin. I read somewhere that the rule of thumb is to reduce 5% if using mag primers to replace regular primers. Wallacem
 
First, I believe you will be fine.

Second, you never know what effect magnum primers will have until you test them. When times are tough, I use small rifle primers in everything with mid range loads. Some of my 9mm stuff was slower with magnum primers, and most was slightly less accurate. But, they were all safe.

Case in point: Alliant 2400 powder is known to make more velocity with standard primers than it does with magnum primers.
 
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