BigGabe Posted August 9, 2014 Share Posted August 9, 2014 Hey guys any thoughts would be appreciated. Here's the deal. New old stock 40 S&W 2011 that's having feed issues. Essentially the slide doesn't want to close the last little bit, happens 4 or 5 times out of 80 to 100 rounds and it's not magazine specific. The round chambers all the way but the slide lacks a 16th or so of closing. I can push it closed, and if I eject the round and load it back it will shoot just fine. Shooting reloads with an OAL of 1.180 and and 1.190 all are checked in a case gauge. When racking the slide with the gun empty it works smooth as silk. Same ammo and mags work fine in my other 2011 with no feeding issues at all. If anybody has had this happen to them I would appreciate what you did to cure it. Thanks Link to comment Share on other sites More sharing options...
kmca Posted August 9, 2014 Share Posted August 9, 2014 I'd suspect a tired recoil spring. Has it worked well for you before? Have you checked your loads using the barrel as a gauge? Link to comment Share on other sites More sharing options...
bountyhunter Posted August 9, 2014 Share Posted August 9, 2014 It does kind of sound like the barrel throat is "sizing" the round the last little bit. Check and see if the rounds drop easily into the throat (fully) and then drops out freely when you turn the end downwards. Link to comment Share on other sites More sharing options...
BigGabe Posted August 9, 2014 Author Share Posted August 9, 2014 The gun has done it from day one. It has a new 14 lb recoil spring I put in after the first 100 rounds. The rounds drop in and out of the chamber with no problem. Doesn't make any difference. Have run right at 800 rounds through it. As you can see from the middle picture the round is fully chambered. No extraction problems. Link to comment Share on other sites More sharing options...
kmca Posted August 9, 2014 Share Posted August 9, 2014 Check for a burr on the inside of the slide where the disconnector rides and the disconnector itself? Have you tried loading a little shorter? I've had to go down to 1.135 with 180gr SWC. Link to comment Share on other sites More sharing options...
xdmjohn Posted August 9, 2014 Share Posted August 9, 2014 Bullet profile can affect oal allowed ,could be a shorter than your current load Link to comment Share on other sites More sharing options...
BigGabe Posted August 9, 2014 Author Share Posted August 9, 2014 No burrs and slide is butter smooth with or without a mag in it. Disconnector is free. I'll try some shorter rounds and let you all know. Link to comment Share on other sites More sharing options...
BigGabe Posted August 9, 2014 Author Share Posted August 9, 2014 Loaded and shot shorter rounds. No difference. Link to comment Share on other sites More sharing options...
Steve RA Posted August 9, 2014 Share Posted August 9, 2014 Out of curiosity, stick a pound or two heavier recoil spring in it and see what it does. Link to comment Share on other sites More sharing options...
BigGabe Posted August 9, 2014 Author Share Posted August 9, 2014 Got a heavier spring coming, we'll see. Link to comment Share on other sites More sharing options...
kmca Posted August 9, 2014 Share Posted August 9, 2014 Another thought, are you using grease or oil? My guns feel smooth, but the tighter fitting slides can't grease, it slows the slide too much, so I use oil. Worth a try? Lightly grease the full length guide rod? Link to comment Share on other sites More sharing options...
BigGabe Posted August 9, 2014 Author Share Posted August 9, 2014 Been using Breakfree CLP on the rails from the get go. Link to comment Share on other sites More sharing options...
Shadow Posted August 10, 2014 Share Posted August 10, 2014 Use a sharpie to coat the end of the extractor and the right side of the chamber end of the barrel and see if the extractor is making contact with the barrel. If so relieve the extractor/barrel. Link to comment Share on other sites More sharing options...
art mc Posted August 10, 2014 Share Posted August 10, 2014 Check chamber length. Take a new brass drop into chamber. The head should be a little shorter than the hood. I always cut chamber a tad longer for the reason especially if shooting lead bullets. Hope this helps. art Link to comment Share on other sites More sharing options...
Dranoel Posted August 10, 2014 Share Posted August 10, 2014 (edited) I suspect this is a barrel fitment issue. Field strip the gun but leave the barrel in the slide. Move the barrel in and out of battery. Do the locking lugs engage smoothly? Does it take some effort to push the locking lugs int the slide? If so, your barrel hood may be a thousandth or two long. You can use a dry erase marker to coat the slide and barrel locking lugs and then run that test again to see where the lugs are making hard contact. If everything is smooth and effortless there, mount the barrel in the frame without the slide. Now move the barrel back and forth. Does the barrel lug ride over the slide stop pin easily? Or does it take some effort? If so your lug may be a little oversized. Edited August 10, 2014 by Dranoel Link to comment Share on other sites More sharing options...
BigGabe Posted August 10, 2014 Author Share Posted August 10, 2014 Art may be on to something. I have noticed some brass will stick past the top of the hood a thousanth or so. Factory sits dead flush. When the slide won't go into battery I can force it by pushing on the back and it will pop closed using both thumbs. If I try to eject the round with the slide a 16th from closing like in the pictures it's like the brass wasn't resized properly and allot of force has to be applied to get the slide back to get the round out even though the round would fall in and out of the barrel when checked before and after. The back of the hood sits flush against the breechface when in battery. I tried Dranoel's suggestion and the barrel cams into the slide fine with no binding. Frame fit seems to be good. I'm wondering if the chamber might be just a hair short making some of the brass on my reloads stick out past the hood just enough to keep the barrel lugs from engaging the corresponding recesses in the slide once in a while. Has anyone ever heard of the back of the full length guide rod being a little oversized causing the barrel and slide to bind every so often, on the rod I'm talking about the end that fits against the inside of the frame not the rod itself that the spring slides over. Link to comment Share on other sites More sharing options...
BigGabe Posted August 12, 2014 Author Share Posted August 12, 2014 Well first off thanks for all the help. I think the mystery has been solved. I hope. Started resetting up my loading dies, bullet seater and taper crimp mainly. Rounds fell in and out of case gauge and barrel, I'm thinking we're good to go. Take it out and 20 rounds later slide sticks. Well I was pissed. Started checking rounds and found a few more that wouldn't let the slide go forward all the way. Pulled the bullets and just tried the case and the slide would still bind. Got to checking oal and found any case over .846 wouldn't let the locking lugs cam into the slide all the way without a lot of force, the longer the case the more force it took to close it all the way. Cases stuck out past the end of the hood. Took my reamer and lengthened the chamber just a tad to where the longest ones set flush and now the guilty cases chamber and shoot just fine along with the rest of them. So once again thanks for all the help. I think the problem's been solved. Gabe Link to comment Share on other sites More sharing options...
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