The change of seating depth may cause you problems. If one is a FMJ, and the other is a JHP the OAL will be considerably different. I use a JHP 124 Gr. and seat to 1.069 over 4.2 gr CFE Pistol, shich is straight out of the Hornady manual. The FMJ might need to be seated out to 1.115 to 1.125. Seating depth (OAL) can be critical with the small cases such as the 9mm. You are working with some pretty good pressures, and incorrect seating can greatly increase that.
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H Richard
SWCA1967 SWHF244
Last edited by H Richard; 05-02-2016 at 07:58 PM.
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