Nitrofish1 Posted April 11, 2013 Share Posted April 11, 2013 I recently purchased some 124 9m RN plated (.355) bullets that crimp at .375-.376. I noticed the bullet is spinning in the case. I checked to see if I can push the bullet on the table and it seems ok. When I over crimp .365-.366 it still does the same thing. The bullet it self is .355 so I know that is okay. I have the OAL set at 1.100 for my glock 34 Am I missing something on my set-up? Thank for any input James Quote Link to comment Share on other sites More sharing options...
Sarge Posted April 11, 2013 Share Posted April 11, 2013 Tightening crimp can actually loosen the case neck tension on a bullet. .376 is about typical for a .355 bullet. What dies? What headstamp does this happen with or does it happen with multiple brands? I would first try reducing the bell. Then I would toss out offending brass if it's only one. If it's multiple brass then I would probably try LEE sizer or get a Udie. Quote Link to comment Share on other sites More sharing options...
blairmckenzie1 Posted April 11, 2013 Share Posted April 11, 2013 Check your sizing die. Everytime I've had trouble with bullets coming loose my sizing die had come loose and backed out. I set my sizing die up so it almost touches the shellplate. Quote Link to comment Share on other sites More sharing options...
Nitrofish1 Posted April 11, 2013 Author Share Posted April 11, 2013 I am using mixed brass and Dillon dies. This just started when I converted the set-up from 135 to 124 gr bullets. I'll try reducing the bell and see if this changes anything. Sarge thanks for the input James Quote Link to comment Share on other sites More sharing options...
Sarge Posted April 11, 2013 Share Posted April 11, 2013 This just started when I converted the set-up from 135 to 124 gr bullets. Same brand of bullets or did you change that as well? Quote Link to comment Share on other sites More sharing options...
Nitrofish1 Posted April 11, 2013 Author Share Posted April 11, 2013 135 Lead ,124 plated differant manufactuer as well. Quote Link to comment Share on other sites More sharing options...
james5m Posted April 11, 2013 Share Posted April 11, 2013 (edited) Kinda sounds like the case didn't get resized properly Edited April 11, 2013 by james5m Quote Link to comment Share on other sites More sharing options...
Nitrofish1 Posted April 12, 2013 Author Share Posted April 12, 2013 I finally found the culprit. I did not resize the case properly. Brian mishap on my part... Thank you all that gave me some input. James Quote Link to comment Share on other sites More sharing options...
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