tjd308
Member
I know I'll catch hell for not checking from the get go and loading 100 rounds and then realizing my mistake, but admittedly I made an error when full length resizing my brass and set the shoulder back too far and now there is between 0.009 and 0.010" of difference in the shoulder of a fired case and the brass I reformed. This is for an M1 Garand using mil-surplus Greek HXP brass (30-06 obviously). I know that the standard most use for bolt guns is either to fire form or leave 0.001"-0.002" but autoloaders should be closer to 0.004" to ensure proper chambering.
Fire formed measurement:
Full-length resized measurement:
30-06 Springfield SAAMI specs:
- My main question is: Is it safe to shoot this brass this one time to get it back to fire formed size and set my dies properly for the next round of resizing or if I have an unsafe headspace situation that's either dangerous to me or the rifle? Basically will I just be unnecessarily working the brass too much this one time but will be fine or it's not safe and I should just discard the brass?
- Do I even need to worry about SAAMI spec or is measuring relative to a fire formed case all I should worry about? I assume that if I'm using that brass only in the one rifle then it doesn't matter, but if I wanted to make a round that would fit in virtually any chamber that I should then ensure it's inside of the SAAMI min-max, no?
Fire formed measurement:
Full-length resized measurement:
30-06 Springfield SAAMI specs: