Read the introduction to hand loading by Tresmon and meaured my rifle's chamber using his method and a couple others. Asked this question in his Determining OAL post but wanted to get wider circulation. I get consistenly different chamber/ogive length measurements with different bullets. My questions are these:
1. Is ogive length and chamber length the same thing?
2. Is it defined as the distance from the closed bolt face to the lands?
3. Should it be bullet independant?
4. If the answers to 1, 2, and 3 are yes; why do I get one number with 190gr SMKs and another number (+.01) with Berger 185gr LD Target bullets?
5. When it comes to determining this dimension what units are good enough. +/-.001 or +/-.01 etc.
New to loading but already see what the appeal is. Thanks for your input. CJ
1. Is ogive length and chamber length the same thing?
2. Is it defined as the distance from the closed bolt face to the lands?
3. Should it be bullet independant?
4. If the answers to 1, 2, and 3 are yes; why do I get one number with 190gr SMKs and another number (+.01) with Berger 185gr LD Target bullets?
5. When it comes to determining this dimension what units are good enough. +/-.001 or +/-.01 etc.
New to loading but already see what the appeal is. Thanks for your input. CJ