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If either of you has a chronograph and the time to try it
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I haven't, put the center of the group seems really close to the same on LP and SP primers. From what I've seen I'd say the ES and SD is much better.
My buddy has a 1911 that fires the primers off center. It is near the edge of a SP primer. Beyond that I see no need for a LP in a 45acp. Such small powder charges.