I have not had any problems with XTP bullets needing deep seating in any of my 9mm pistols. My Masada has the "tightest" chamber and using Hornady manual's recommended OAL all pass the plunk test. Any time there is a fit problem measure. Measure the OD of the cartridge in several places. Color the cartridge/bullet and drop it in the chamber, twist it and see where it hits first (often too much crimp will bulge the cse and I do not "crimp" any semi-auto round, just deflare enough to plunk)...