Can you tell by looking at them which is which? (I think not, but I don't have any CCIs on hand to see if they are discernable.)
If you cannot, remember they are for your beloved wife. Take no chances for less than $15 worth of primers and an evening's work.
Good luck.
Lost Sheep
edit: If it were me, I would try to find a load that would be compatible with both primers and turn the whole fiasco into an experiment to prove that magnum primers vs standard primers would make a difference. Firing off 400 rounds to see if you wound up with two different points of impact and velocity clusters or not might be fun. Of course, that would involve more work and a lot of lead. So before committing 400 slugs to the project I would make sure a (newly made) load would cycle the slide with certainty with standard primers and magnum primers would not be too hot.
Last edited by Lost Sheep; July 15, 2012 at 09:18 PM.
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