Large rifle primers will work, but be aware that they will not seat flush. You'll have to seat a couple in empty cases to make sure they won't bind your pistols.

6.5gr of any fast pistol powder (Titegroup, Clays, Bullseye, etc.) will give you about 950fps from a 4" barrel with the 200gr XTPs. Will not be position sensitive and you should find the recoil mild.

WLR mag primer height = .128"
CCI350 mag pistol primer height =.119"

Works in my revolver, but you need to test yours. Also, different primer vendors can have slightly different heights as well as different pocket depths for different brass.

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Last edited by dla; 08/01/22.