It start out good. First I shot my 30 Herrett, doing load testing. At 50 yards, 1 hole, and 2 halfs, with RL-7. I am so happy, but had a problem, with the ejecter not pushing the case out, I had to remove the barrel, for 2 cases. Then I started to shot my new 24 in. 17 REM. The first 5 shot were great, all 5 were touching, around 6 in. high. The next 7 shots all hell started. The primer hits started to get egg shape hits, and then brech came open on the last shot. I do not think the barrel is locking in place. Need help, Steve.