Noylj, STI has 9x19 stamped right on the barrel. I also started at the bottom for the CZ with the short OAL and Im thinking of loading 3 powder charges for the STI. 3.5, 4.1, and 4.4. I cant find data for the bullet though. I did however find it for the same weight but RN. min is 4.0 and max is 5.0.
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