lroy Posted July 5, 2022 Share Posted July 5, 2022 I've been working on a 9 major load and have had a few issues. I will occasionally have the gun fail to fully go into battery, requiring a small tap on the back of the slide to seat fully and will the fire correctly. Things I've checked. OAL - 1.15 Bullet - PD 124 v1 Powder - AA7 (10 gr) PF - 175 Crimp - 3.75 Cause gauge - all pass Barrel plunk test - all pass Replaced recoil and mag springs. Polished feed ramp. Mags - new mbx and atlas mags, checked feed lips When the slide is tapped, the rounds fire and eject normally. I made some dummy rounds to see where things were hitting. The bullet makes contact halfway up the feed ramp, but then hitches after that. If I cycle the gun by hand and slowly let the slide move forward, the rounds will catch and hold the slide open. Tapping the slide fixes it, but I've had failures in my last match where the round would feed, but be slightly out of battery and not fire. I'm assuming these issues are related. I'm not sure where I'm screwing up. Any help would be appreciated. Link to comment Share on other sites More sharing options...
Sarge Posted July 5, 2022 Share Posted July 5, 2022 Did the gun work before with a different load? Or is the first time trying the gun? Link to comment Share on other sites More sharing options...
lroy Posted July 5, 2022 Author Share Posted July 5, 2022 (edited) The match prior to this, I shot the same load with no issues. Workinghttps://www.youtube.com/watch?v=yPhjg5Z-3Cg Not working (It occurs on the first target, as well as pretty much every stage) https://www.youtube.com/watch?v=j-4BHqMKFFA Which made me think it would be solved by cleaning so that was what I did, but it's still occurring. Edited July 5, 2022 by lroy Link to comment Share on other sites More sharing options...
Furrly Posted July 5, 2022 Share Posted July 5, 2022 What poundage recoil spring are you running.. Also check your extractor tension, I had a very similar issue with my open gun several years ago it was the extractor.. Link to comment Share on other sites More sharing options...
Ben53 Posted July 5, 2022 Share Posted July 5, 2022 Check extractor tension? Link to comment Share on other sites More sharing options...
lroy Posted July 5, 2022 Author Share Posted July 5, 2022 They recommend a 6lb variable rate coil spring. I put in a 7lb to test, but it still occurs. I did put in two new springs in my aftec extractor. Im guessing this is too tight? Link to comment Share on other sites More sharing options...
Furrly Posted July 5, 2022 Share Posted July 5, 2022 Remove one spring you don't need both.. Also you might have to go with an 8lb recoil spring Link to comment Share on other sites More sharing options...
Bwilmot Posted July 5, 2022 Share Posted July 5, 2022 With an aftec you'll have to radius the lower corner a bit in order to help the round slide under . Go very slow and small till the round will chamber when your working the slide by hand. the aftec tension will always be a little tighter than a normal extractor Link to comment Share on other sites More sharing options...
mkmckinley Posted August 29, 2022 Share Posted August 29, 2022 High primers? Link to comment Share on other sites More sharing options...
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