I read through the thread, but didnt see where the OP tried 147 grain rounds. All my 39XX series pistols like 147 grain best and shoot the tightest groups to POA with it.

Hogue grips generally improve control of a 39XX gun too.

Im inclined to go with those who say that some folks are just not compatible with certain guns. Like me and the Glock 36. I want to like it but it just doesnt work, for me.

OP before I dumped that 3913, I would dry fire it 2 or 300 times and try some 147 grain rounds, if you havent already. Good luck! Regards 18DAI

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7 +1 Rounds of hope & change