has anyone tried this deep freezing process to reduce barrel stress. If it works Im thinking about sending my wife in for the treatment (just kidding).
My .220 swift shoots very good groups. .25 - .375 with the exception of (almost alway the third round) which jumps out about .75 to 1" from the rest regardless of sample size. I weigh and sort all bullets, trickle all powder, size and trim to .001" but every group I shoot has one flier untill the barrel is warmed up. over the chrono my fps is usuall no greater than 5 fps and s.d. 1.8 - 2.0 except the flier which jumps out about 50 - 60 fps and the s.d. gets up to 20 -22. This makes me think it the loads not the barrel stressing. Any ideas. I use generally a 55gr moly by Seirra semi-spitzer. I dont think the flier is me, honestly. Im using a No 1 ruger and have been shooting it this way for about 25 yrs plus.and I always get the one flier will anyone who has tried the deep freezing process comment.
Thanks
tom
My .220 swift shoots very good groups. .25 - .375 with the exception of (almost alway the third round) which jumps out about .75 to 1" from the rest regardless of sample size. I weigh and sort all bullets, trickle all powder, size and trim to .001" but every group I shoot has one flier untill the barrel is warmed up. over the chrono my fps is usuall no greater than 5 fps and s.d. 1.8 - 2.0 except the flier which jumps out about 50 - 60 fps and the s.d. gets up to 20 -22. This makes me think it the loads not the barrel stressing. Any ideas. I use generally a 55gr moly by Seirra semi-spitzer. I dont think the flier is me, honestly. Im using a No 1 ruger and have been shooting it this way for about 25 yrs plus.and I always get the one flier will anyone who has tried the deep freezing process comment.
Thanks
tom