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SHONEY... very interesting comparision... care to share where the data came from, & if there was any more of it ???
to the OP... my only concern, is softness of the pistol primer compared to the rifle primer... semi autos are more prone to slam fires with a softer primer, & you are likely to see more pressure evidence & the pistol primer may actually be the weak link in containing even normal rifle cartridge pressures... ( just like a difference in heat, there are also differences in the softness of the primer cup ) I do use pistol primers in low pressure cartridges like the 22 Hornet, but personally would not use them in even a bolt action 223...
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