Re: Importance of case head thickness relating to accuracy
Flyers are inconsistent in direction. they probably fly 1/4"-1/2" away from the group hole.
My barrel is a 27 1/2" pacnor finished at .875" with a 9 twist, 11 degree crown etc. the action is trued and skim bedded into an HS Precision stock, with the trigger prfessionaly done by the smith. The barrel channel is releived nicely as well. The groups have been shot from a 15" bull bag and rear bag set-up as well as a windage adj front rest with rear bag. I also had a friend who has won the 1000yd match on occasion, at Quantico shoot it, with the same results. My cases or loads have to have something to do with it, if I were to guess.
I do know that my body die, adjusted all the way down, won't push the shoulder back any. It came from redding too long I guess. Could not pushing the shoulder back .002" be a cause?
I have been told that internal capacity fluctuations will cause flyers and that I should do the water test to determine any culls. What do you think of that suggestion? Also, was told that improper primer seating depth will yield flyers. I run the RCBS uniformer in the pocket every loading,......is there some trick or method I am unfamiliar with, related to pocket uniforming that is other than running the tool in and twisting until the pocket is clean and shiny?
I don't think a single shell has more than 10 firings on it, but could be wrong. My powder charges, started at 57.5, 58.5, and 59gr respectively, with the RL22 (all WELL under max) for the 280AI in the Nosler no5 manual, and the 7828, if I recall was 58.5,59.5,and 60gr respectively, all for 5 shot groups. These are 2gr or better under recommended max, but close to max in the nosler no4 manual [img]images/icons/confused.gif[/img]
You try to get closer to the target,..and I keep trying to get further away.