nuclearmonkey

Thanks for all the replies... Mag release looks to be in good order. It has actually happened on two glocks - (one was my virtually new 34 backup with the exact same setup as the original) I think I am going to try and isolate the problem with a really long shooting day at the range. It seems to only happen on the last two rounds or so, which seems to sound like a mag issue - except both mags were brand new. (I am unfamiliar with having to break in mags - so not sure if that is plausible or not) I guess first I will shoot a bunch through only the older style magazines and see if I still have the problems. If so, I guess it may be safe to say it's the 11lb spring. I just hate to change it cause the gun is running so nice and flat with the setup I have right now. There is nothing more frustrating than... "click". Thanks all nm

I was wondering if anyone was having issues with the latest glock magazines for the 17 / 34. I have had four malfunctions over the last 250 or so rounds that were nose up on the second to last or last round of the mag. At first I thought it was my kkm barrel not liking my 1.130 oal zero 147's. I switched back to the stock barrel, and still had issues. I have since noticed it happened on all new magazines (have been shot maybe a couple hundred rounds or so and that's it). The springs feel nice and tight (much tighter than the mags I have been using with the gun since I purchased it a year ago) I am shooting a 34 with a full length tungsten guide rod, and an 11lb ismi. The ammo is around 130pf. Thanks in advance!! nm

Just wanted to give everyone a follow up (for those interested) and let you guys know that all problems have miraculously stopped. I don't really know why, but I can say that (knock on wood) I have shot an idpa match - and all four stages went to slide lock, and just finnished up a 3 day course with Randy Cain - and not one hickup. I have no idea what may have been causing the issues (I am running the gun a bit dryer - someone mentioned maybe some slide glide managed it's way over to the slide lock area). I know Charlie Vanek was mentioning the 12 lb wolf springs - I ordered two, but have not tried them yet since things seem to working better. I do hate how the wolf sounds in the gun due to it's length though. It sounds like a built up slinky that rubs on the slide since it is so stacked up. For those of you running the 12lb wolf, have you trimmed them at all, or live with the extra bunched up inside? Again, thank you all for the suggestions, now I just hope it keeps running as well as it's been!! -nm

Thanks Duane - did that first to try and eliminate as much user error as possible. Went to the range tonight for about an hour - couldn't get it to screw up once. Tried speeding up, only loading a couple at a time, burning thru a mag.. still no problems at all - will see how it holds for idpa match this weekend. nm

Thanks for the suggestions - I also have a call in to Matt at Custom Glock since I know he is running this setup. As for user error, it very well may be - I really need to find some time in the next day or so to sit with a bunch of ammo and springs, and try to isolate the problem. I shot last night without issue (although there were only a half dozen times I was able to run the gun to empty). Difinitely need to experiment with not so great grips and see if maybe it's happening when things get sped up - maybe my grip is changing without me knowing it. The video is great advice - A lot of people have been mentioning that lately about helping out shooting as a whole, so it will definitely be something I will look into. As for the thumb, i will try and work this out in the next week or so... if not, I might pm you to find a good doctor! Thanks again for all of the help - it's great to hear so many potential causes - now at least I have an idea of what to try, and what to look for!! Cheers! nm

The could very well be a shooter induced issue. Especially since you notice it happening more when you are speeding along. Could very well be ... Just not sure what I could be doing. I am fairly positive that it's not me hitting the slide release lever - not sure what else it could be. I am running slide glide in it - maybe the glock is a bit too wet. I did find out that the ammo I am using has a PF around 130. Also, the Atlanta arms ammo has a PF around 128-130. Not sure if that matters much. I do know that plenty are using the same ammo with xd's and glock's, etc and no problems that I know of. Going to try the stock spring, as well as a 12# wolf. I wonder if logical progression might work here - (more problems with 14, less with 13, maybe 12 might do it). Will also try the Atlanta Arms ammo tonight for a first. Thanks! nm

Thanks for the suggestion - I am not too sure how to go about measuring this, so this is what i did: I put the stock spring in (uncaptured - but with the stock guide rod) and measured back from the tip of the barrel to the back edge of the slide as far as I could possibly pull it back. I then did this again with the ismi spring in it. The measurement was the same (9 5/8 '' for whatever that is worth). Now as far as slide travel during actual blowback, I am not sure how that would compare, but I would imagine it should be pretty similar. The hardest part is that I can't forcibly duplicate it. It fails to go to slide lock at inoportune times when I least expect it. If i load a mag with two shots and fire trying to see if it will happen, it works fine - It's when I am in the middle of paying attention to something else that it usually happens, so it's hard to try different fixes to find out if it indeed the fixes work. As for Atlanta Arms, I have not used their ammo yet, but am going to give it a try tonight. As soon as I get a PF, I will let you guys know - maybe that might explain something - now that I think about it, I seemed to have been having more noticible problems with slidelock with the 14# wolf than the 13# ismi (maybe 70% failure as opposed to 30% to lock back) - sorry for all of the confusion, I am really trying to learn as I go! Thanks again for all the help!! nm

Thanks for all of the replies... it's funny how until I started reading some of the posts on this forum, the PF was the last thing I would have thought of. I am relatively new to the competition aspect, so still ramping up on loads, etc. I do know that the loads are from a local club guy here in south florida who supplies most of the better ipsc guys. I will try and borrow a chrono from a friend to test the PF. One question though... wouldn't the lighter the recoil spring, essentially the softer the ammo you could shoot - since the slide cycles faster? I will post the PF when I get it - maybe that might answer the question (but someone will definitely have to tell me what the end result would mean ) Also, I am using the 17rd glock mags (only a couple of months old - so I think that makes them the latest generation) Again, thanks for the help - hopefully will get this ironed out soon. BTW, does anyone know the PF for Atlanta Arms' 147 reloads are? - I just bought a case but haven't tried them yet. Cheers, nm

Brand spanking new here, but was wondering if someone has had experience with this: I am running a 13# ISMI spring in my 34 with a Vanek trigger. I am shooting 147gr minor loads in idpa & ipsc. Only problem is that slide lock on an empty mag is a ? About 30% of the time I am failing to go to slide lock on an empty mag (30% of the time too much for idpa) I have since switched to a flat slide lock lever, went to the range, and still had issues (most noticibly when doing more active drills where speed was involved) I have no ideas, but the only thing i can think of is the spring. I have not had the chance to test the stock spring again, but am dreading having to go back since I love the way it shoots with the 13. Any help / advice would be greatly appreciated!! Thanks in advance, NM