..and just knock a few tenths of a grain off every load for standard primers. Having one kind is easier to keep in stock and not get things crossed up. I maybe see a time in the future when a primer will be a primer and the data will reflect that. I think some companies may already have settled on one small primer for pistols.

Magnum primers exist because some of the slow powders used in magnum loads are hard to light and get a complete and consistent burn. They have a little more fire and heat. I've used magnum primers to shoot plastic bullets and they will do major damage to wall board. Don't ask me how I know. (I was sure that the backstop I made would stop a plastic bullet driven by a primer)

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