tanks Posted April 10, 2016 Author Share Posted April 10, 2016 (edited) I did the plunk test as I was about to do the weekly firearm cleaning anyway. Every one but two passed. I had one raised primer that was in the pic. So, three out of about 1,400 rounds rejected. I feel better. I will still save the "plunk test" ones just for the range though. I backordered the undersize die from Midway. Edited April 10, 2016 by tanks Link to comment Share on other sites More sharing options...
b1gcountry Posted April 11, 2016 Share Posted April 11, 2016 I am betting the issue is with the case not being sized far enough down. Or the run of the case. Put the round in the gauge backwards and see if the rim enters the gauge. If it doesn't, twist it around a little in the gauge then put it back in the right way. If it goes in, then it was the rim. Sent from my SPH-L720 using Tapatalk Link to comment Share on other sites More sharing options...
bigbob21 Posted April 11, 2016 Share Posted April 11, 2016 I was having same problem... Bought a 650 last month and have been having 7-10% case gauge failures... Decided I'd be fine without case gauging bc they seemed to fit my glock 34. I've had 3 complete lockup failures on my 34 and 1 on my 19 and another on an xdm... Of course I'll case gauge my match ammo, but for practice it's pretty annoying. Anyways, I bought a Lee undersized die from Natchez on Monday, arrived on Thursday... Paid 17$ shipping! For a tiny die! Anyways, shot maybe 500 rounds over the weekend with the new die's rounds... Had 1 lockup failure and again had to use a screwdriver to open up the barrel lockup to get the round out... (Slide completely stuck and could not hand cycle to clear the jamb) I guess it brought down my failure rate... Guess next step is to check head stamps and compare which work and which don't... Or gauge every round, lol Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
jdlincoln Posted April 11, 2016 Share Posted April 11, 2016 tanks, see my posting on Lee FCD. I have found out that the different thickness of some brass can cause issues. JD Link to comment Share on other sites More sharing options...
rustybayonet Posted April 11, 2016 Share Posted April 11, 2016 The Dillon dies do not size the case all the way down to the bottom. So sometimes you end up with a slight bulge. I use only Lee dies, and never had a problem with 9mm, 40, or 45 cartridges. What I did on my dillon size die is to polish the lip of the die down to the carbide sleeve. This solved the problem for me. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted April 11, 2016 Share Posted April 11, 2016 three out of about 1,400 rounds rejected. I think your "problem" was not the reloading process, but the GAUGE. If they load into your chamber, they're just great .... Link to comment Share on other sites More sharing options...
Targetpractice Posted April 11, 2016 Share Posted April 11, 2016 Just out of curiosity, are you lubing your brass? Link to comment Share on other sites More sharing options...
Sarge Posted April 11, 2016 Share Posted April 11, 2016 I was having same problem... Bought a 650 last month and have been having 7-10% case gauge failures... Decided I'd be fine without case gauging bc they seemed to fit my glock 34. I've had 3 complete lockup failures on my 34 and 1 on my 19 and another on an xdm... Of course I'll case gauge my match ammo, but for practice it's pretty annoying. Anyways, I bought a Lee undersized die from Natchez on Monday, arrived on Thursday... Paid 17$ shipping! For a tiny die! Anyways, shot maybe 500 rounds over the weekend with the new die's rounds... Had 1 lockup failure and again had to use a screwdriver to open up the barrel lockup to get the round out... (Slide completely stuck and could not hand cycle to clear the jamb) I guess it brought down my failure rate... Guess next step is to check head stamps and compare which work and which don't... Or gauge every round, lol Sent from my iPhone using Tapatalk That sounds more like a length issue or possibly left a case belled somehow Link to comment Share on other sites More sharing options...
bigbob21 Posted April 11, 2016 Share Posted April 11, 2016 (edited) 1.135+/- could maybe use a tighter crimp... I've gone really easy with that after reading hundreds of posts on here saying "too much crimp!" Lol Sent from my iPhone using Tapatalk Edited April 11, 2016 by bigbob21 Link to comment Share on other sites More sharing options...
bwikel Posted April 11, 2016 Share Posted April 11, 2016 Drop a few in the case gage after you size them but before they hit your expander. At least then you will know if it is a sizing issue or not removing enough of the flare after seating/crimping. If it is a sizing issue set the press up where it cams over a little at the end of the stroke. Link to comment Share on other sites More sharing options...
Kaldor Posted April 11, 2016 Share Posted April 11, 2016 three out of about 1,400 rounds rejected. I think your "problem" was not the reloading process, but the GAUGE. If they load into your chamber, they're just great .... That was my thought as well Who cares what the gauge says, unless that gauge is cut the same as your chamber. I always spot check plunk and mag length vs my barrel and mags. Link to comment Share on other sites More sharing options...
Ponce Posted April 11, 2016 Share Posted April 11, 2016 I was getting a fail rate of about 5% on 9mm on my 650. That was way too high after trouble shooting it was my seating die I flipped the stem around to the shape that matches my bullet profile better. It was seating some bullets crooked. My fail rate is less than 5 per thousand now. My die set-up 1 Lee sizing die 2 Dillon powder 3 Powder check 4 Dillion seating 5 Dillion crimp Link to comment Share on other sites More sharing options...
b1gcountry Posted April 12, 2016 Share Posted April 12, 2016 Bigbob21, I had that problem exactly once, and it was a round where the brass shaved the bullet while seating it. There was lead piled up around the mouth of the case, and it caused the action to jam up. Sent from my SPH-L720 using Tapatalk Link to comment Share on other sites More sharing options...
RockinRiley Posted April 14, 2016 Share Posted April 14, 2016 The high primer concerns me! That should be your first and foremost situation to resolve. After that you can move to case gauging. Once you find what caused your high primer, you may also find why you may have a sizing problem. Sent from my iPad using Tapatalk Link to comment Share on other sites More sharing options...
tcoz Posted April 16, 2016 Share Posted April 16, 2016 The high primer concerns me! That should be your first and foremost situation to resolve. After that you can move to case gauging. Once you find what caused your high primer, you may also find why you may have a sizing problem. Sent from my iPad using Tapatalk +1.....the high primer is more of an issue than a few rounds that won't chamber. It might just be the pic but it seems like the primer seating depth isn't very consistent in those rounds. I'd work on that first. Link to comment Share on other sites More sharing options...
bigbob21 Posted April 16, 2016 Share Posted April 16, 2016 (edited) So again, sorry to thread jack, but to follow up: Bought a 9mm u-die, ran about 400 rounds through it, mixed brass, same oal, did some drills today and had about 8-9 complete lookups. (Slide stuck with round chambered but slight gap between barrel and slide) I've been carrying a small flathead with me to unhinge the slide in case that happens. (I stick it In between the barrel and slide opening on the extractor side and force it open) Each time the case/round is stuck in the barrel and need to use the flathead for that as well... I took the rounds home and none fit the case gauge nor the barrel plunk test with a twist... I guess only thing left to do is: sort brass by headstand and find the culprits, or case gauge every round, even for practice... *sigh* Sent from my iPhone using Tapatalk Edited April 16, 2016 by bigbob21 Link to comment Share on other sites More sharing options...
b1gcountry Posted April 16, 2016 Share Posted April 16, 2016 Step 1 is probably to run 50 rounds through the resizing die only and see which ones guage.if they all do, it is probably a seat or crimp issue Sent from my SPH-L720 using Tapatalk Link to comment Share on other sites More sharing options...
fishsticks Posted April 16, 2016 Share Posted April 16, 2016 So again, sorry to thread jack, but to follow up: Bought a 9mm u-die, ran about 400 rounds through it, mixed brass, same oal, did some drills today and had about 8-9 complete lookups. (Slide stuck with round chambered but slight gap between barrel and slide) I've been carrying a small flathead with me to unhinge the slide in case that happens. (I stick it In between the barrel and slide opening on the extractor side and force it open) Each time the case/round is stuck in the barrel and need to use the flathead for that as well... I took the rounds home and none fit the case gauge nor the barrel plunk test with a twist... I guess only thing left to do is: sort brass by headstand and find the culprits, or case gauge every round, even for practice... *sigh* Sent from my iPhone using Tapatalk Not to sound too harsh, but something's not right if the failure rate is that high. Others have said it elsewhere in this thread, but the place to start is by sizing rounds and making sure they gauge. Once they all pass there, make sure you're only belling enough to seat the bullet without shaving it. Finally, set the crimp and do a final check on sizing. It isn't unrealistic to expect near 100% reliability from reloads. At a minimum gauge or barrel check match ammo. The truly OCD approach is to gauge or barrel check every round. Link to comment Share on other sites More sharing options...
peterthefish Posted April 16, 2016 Share Posted April 16, 2016 Each time the case/round is stuck in the barrel and need to use the flathead for that as well... I took the rounds home and none fit the case gauge nor the barrel plunk test with a twist... I guess only thing left to do is: sort brass by headstand and find the culprits, or case gauge every round, even for practice... *sigh* Sent from my iPhone using Tapatalk The force applied by your recoil spring to put those rounds into battery is not so high that you need a screwdriver. Hold slide firmly down range in left hand, slam right hand into frame to break the jam. My guess is CBC brass is your culprit. CBC and certain bullet profiles will jam a tight chamber every time even at OALs that work with all other brass. Link to comment Share on other sites More sharing options...
1time Posted April 16, 2016 Share Posted April 16, 2016 I'm another on the gauge problem. I have the same case gauge and factory 124's and 147's won't gauge in it. Link to comment Share on other sites More sharing options...
Beastly Posted April 16, 2016 Share Posted April 16, 2016 Measure diameter of case mouth afer crimp stage. Should be about 0.378" for 9mm. Overcrimping can counter-inuitively cause the case mount to expand more and cause CG and plunk test failures. Link to comment Share on other sites More sharing options...
Sandbagger123 Posted April 17, 2016 Share Posted April 17, 2016 lube your cases. take a bunch of 9mm cases and measure them. you will be surprised how much they vary in length. take one that measured in the middle range and then set our crimp with that case. set it at .377/.378. this way the shorter one will still get adequate crimp while the longer ones will receive slightly more crimp. its the best way to do it unless you sort by stamp or length. Some love the FCD, some hate it. I have run 10's of thousands through my press in 9mm and i don't even adjust from coated/FMJ/ plated. Link to comment Share on other sites More sharing options...
glock34shooter Posted April 17, 2016 Share Posted April 17, 2016 I use mixed brass, but I still check head stamps. I remove all CBC, SB, and anything else that is a weird head stamp. I learned after having similar experiences as other in this thread, that almost all of my CG failures were those head stamps. It takes more time but I'd rather fix it at home than screw with it at the range or on the clock. I actually CG and measure each round I load. Now if I get a CG failure I plunk test it. I haven't had a failure yet using this process. The moral of the story is check your brass before you start and save the frustration later. Link to comment Share on other sites More sharing options...
acpie360 Posted April 17, 2016 Share Posted April 17, 2016 ... Bought a 9mm u-die, ran about 400 rounds through it, mixed brass, same oal, did some drills today and had about 8-9 complete lookups. (Slide stuck with round chambered but slight gap between barrel and slide) ... Are you using an aftermarket Glock 34 barrel? What's your load recipe? If the chamber is too tight and/or COL is too long, you could have the problem you described. Link to comment Share on other sites More sharing options...
bigbob21 Posted April 17, 2016 Share Posted April 17, 2016 (edited) ... Bought a 9mm u-die, ran about 400 rounds through it, mixed brass, same oal, did some drills today and had about 8-9 complete lookups. (Slide stuck with round chambered but slight gap between barrel and slide) ... Are you using an aftermarket Glock 34 barrel? What's your load recipe? If the chamber is too tight and/or COL is too long, you could have the problem you described.YesKkm I'm noticing it's picker than stock. But my wife's xdm takes be cake... That stock barrel doesn't like anything over 1.1350 So I'm starting to load to 1.12 for both guns and had no jams today at a match. (Gauged 200 rounds and tossed about 3-4 that didn't pass) Edited April 18, 2016 by bigbob21 Link to comment Share on other sites More sharing options...
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