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Remington UMC 115 gr FMJ is a little puny. Out of a G17 it will not
make the minor power factor floor for USPSA competition. To get it
to run 100% in my G17's (gen 2 and gen 3) I drop to a 15 lb or even a
13 lb recoil spring on a stainless guiderod. Stock spring on a gen 3 is 17 lbs.
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