Bullseye is an awfully fast burning powder for 9mm. For optimum loads in a 9mm with 124 jacketed bullets, I would go looking on the bench for a can of Green Dot, 231, Unique, WSF, etc.
I am sure that your current loads are safe, but the pressure curve on a fastburning powder makes it dicy at higher pressures(velocities).
Or, instead of increasing your powder load for the Bullseye, get a lighter recoil spring.
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