I am new to reloading, and was working up some hunting loads for my NMBH 45colt. 23 grains h110, with a 300 XTP/JHP. Anyway, my question is this: There is no real published data on this load, just what people have tried and tested, so I was a bit confused on the overall case length. I seated and crimped to the first of the 2 crimp groves on the bullet, and this left it at about 1.68". I loaded a dozen or so of these, and went to shoot them, they were to long to chamber in my gun. So, I went back and made some more, seated and crimped them to the second grove, and they came out to be 1.6". What is the proper depth? What kind of preassure differences is this going to make? Help is appreciated. Thanks. Oh yeah, trim length is 1.28".