Dtrip Posted September 28, 2016 Share Posted September 28, 2016 (edited) So out of the First Couple Hundered Rounds I have had half a dozen separated cases, using my own reloads. I have shot thousands of rounds of these thru my pistols and never separated a case. Reloads= Range Brass...147 xtreme HP's over 3.3 Grains of Tight Group @ 1.130 on a 550, Dillon Carbide 9mm Die, Lee Factory Crimp set real light. I case gauge a few rounds every now and then as they come off the machine. I suppose it's likely that it's ammo related??? New GMR 13 14.5" Ready Rifle cleaned and lubed Any Ideas what would cause this? Edited September 28, 2016 by Dtrip Added photo Link to comment Share on other sites More sharing options...
ksorrell Posted September 28, 2016 Share Posted September 28, 2016 Have you called JP? Link to comment Share on other sites More sharing options...
Dtrip Posted September 28, 2016 Author Share Posted September 28, 2016 Yes, but I can only get an answering machine or message saying they are busy call back. Link to comment Share on other sites More sharing options...
BigBamBoo Posted September 28, 2016 Share Posted September 28, 2016 I assume you have the silent capture spring in the rig? If so, what color spring is in it? If it is too light of spring, that can cause it. Link to comment Share on other sites More sharing options...
Dtrip Posted September 28, 2016 Author Share Posted September 28, 2016 It does have the SCS w/ burgundy/gold spring? Link to comment Share on other sites More sharing options...
wheelie Posted September 28, 2016 Share Posted September 28, 2016 Does it only happen with the "stepped" cases, or all brass? Link to comment Share on other sites More sharing options...
Alaskapopo Posted September 28, 2016 Share Posted September 28, 2016 The JP is blow back so if your using stepped cases with hot loads this is likely to happen. The case is being pulled out of the chamber before the pressures drop and the weak part of the case is separating. Back your load down a bit. Link to comment Share on other sites More sharing options...
Sarge Posted September 28, 2016 Share Posted September 28, 2016 Sure looks like the junk stepped brass failures I have seen. headstamp FM, ammoload? Link to comment Share on other sites More sharing options...
SCTaylor Posted September 28, 2016 Share Posted September 28, 2016 39 minutes ago, Sarge said: Sure looks like the junk stepped brass failures I have seen. headstamp FM, ammoload? Yup. Those splits are too clean for anything else. Ockham's razor. Link to comment Share on other sites More sharing options...
norbs007 Posted September 28, 2016 Share Posted September 28, 2016 Yep, crappy brass... seen it happen with minor loads too. Nothing to do with the gun. Link to comment Share on other sites More sharing options...
Dtrip Posted September 29, 2016 Author Share Posted September 29, 2016 (edited) Thanks Guy's....I'll do a better job with my quality control procedures! FYI - Ammoload Headstamed brass was the culprit, stepped brass ( which was new to me, always learning).. Went thru the ammobox found half dozen more Ammoload rounds pulled them all, everyone was a " stepped" case. Additionally the rifle rocks...Threw a Razor Red Dot on it the day I got it, zeroed it with the headlights on my truck, went to a match the next day.. Shot a GM classifier with it then I started putting bad ammo in it:) This thing is going to be fun:) Edited September 29, 2016 by Dtrip Link to comment Share on other sites More sharing options...
chendersby Posted October 10, 2016 Share Posted October 10, 2016 Ammoload headstamp brass is the Devils work. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now