hwansikcjswo Posted October 12, 2016 Share Posted October 12, 2016 I have 2 of S2. and one of them is my practice which is very beat up, shot 40k+ rounds with it. The accuracy now is terrible comparing to when I first bought it or my other gun (which is match gun). and I have been using the same ammo I regularly change out parts except the barrel or the slide. Also, I tried swapping the barrel with the match gun, but the accuracy wasn't still there. One really interesting thing is that the practice gun is super accurate with 124gr PMC ammo or 124gr American Eagel. Is my gun dead? Should I retire the gun for dryfire only? Link to comment Share on other sites More sharing options...
ryridesmotox Posted October 12, 2016 Share Posted October 12, 2016 (edited) Did you just swap the barrel of the match gun on? Or did you swap the whole top end? The barrels are fit to the slide. So if you did only the barrel that might be why it is not as accurate as expected. A matched barrel and slide should, in theory give you the accuracy you desire. But in the spirit of the question... The amount of ammo to shoot out the barrel depends on the barrel. I know guys with 250k rounds through revolvers and 1911s with no problems. But those are custom guns with primo parts too. If this doesn't make sense, blame it on the bourbon... Its my day off from work so I've had a few drinks. Edited October 12, 2016 by ryridesmotox Link to comment Share on other sites More sharing options...
JusticeOfToren Posted October 12, 2016 Share Posted October 12, 2016 I heard that the slide stop is usually the culprit when accuracy goes down on Stock 2s. Did you try replacing new slide stop on your practice gun? I don't think 40k is that much at all for a Stock 2, maybe just the mid-point of its lifetime. Link to comment Share on other sites More sharing options...
hwansikcjswo Posted October 12, 2016 Author Share Posted October 12, 2016 (edited) The slide stop is replaced sir. Edited October 12, 2016 by hwansikcjswo Link to comment Share on other sites More sharing options...
ElMateo487 Posted October 12, 2016 Share Posted October 12, 2016 Weird. How could it be inaccurate with a new barrel? Link to comment Share on other sites More sharing options...
ryridesmotox Posted October 12, 2016 Share Posted October 12, 2016 Sights are on the slide... The barrel locks to the slide. If you disrupt either of those 2, it won't be anymore accurate than a glock Link to comment Share on other sites More sharing options...
hwansikcjswo Posted October 12, 2016 Author Share Posted October 12, 2016 (edited) The question is... Why the heck PMC or Fed AE ammo so accurate but not my loaded ammo? My loaded ammo is so accurate for the match gun. As accurate as PMC or Fed. But not my practice gun... Edited October 12, 2016 by hwansikcjswo Link to comment Share on other sites More sharing options...
BC27 Posted October 12, 2016 Share Posted October 12, 2016 Maybe the OAL of your ammo? The throat of you barrel might have eroded a bit and might need a longer OAL? Link to comment Share on other sites More sharing options...
hwansikcjswo Posted October 12, 2016 Author Share Posted October 12, 2016 I checked that the practice gun barrel OAL has increased now. It used to be the same as my match gun. For Xtreme 124 HP, the max OAL was 1.090. The practice gun now show me the max OAL of 1.11 ish. I see the difference there. Link to comment Share on other sites More sharing options...
johnbu Posted October 12, 2016 Share Posted October 12, 2016 (edited) Slug both barrels. But I would first run copper and lead fouling remover first. bullet diameter difference between loads might explain the behaviour. 40k isn't that much and I would be looking at copper or lead fouling reducing spin stability. Obviously, we can't inspect your gun, nor know your cleaning procedures, etc so this is just general direction to investigate. Oh.... just had a thought. Inspecting the barrel and slide locking lugs... is there wear or any "lip" forming? Especially at the chamber end. might not be going in to solid lock. when the slide is forward, is the lock solid? No wiggle at the barrel end? inspecting the slide end, is there wear from the barrel? Edited October 12, 2016 by johnbu Miss Spelling Link to comment Share on other sites More sharing options...
JusticeOfToren Posted October 12, 2016 Share Posted October 12, 2016 johnbu is on point. It may be the barrel diameter has changed over the 40k rounds, though it should have not. If you mainly shoot coated, leading can be bad depending on which bullets you use and how good their coating is. Did you notice any keyhole problems with your practice gun shooting your handload? The sure way is to slug both barrels and see if they have the same diameter. Or, get some oversized coated bullets, say 0.357'' ones, and try them on your practice gun. Link to comment Share on other sites More sharing options...
hwansikcjswo Posted October 12, 2016 Author Share Posted October 12, 2016 6 hours ago, johnbu said: Oh.... just had a thought. Inspecting the barrel and slide locking lugs... is there wear or any "lip" forming? Especially at the chamber end. might not be going in to solid lock. when the slide is forward, is the lock solid? No wiggle at the barrel end? inspecting the slide end, is there wear from the barrel? My practice gun has a lot of wear on the locking lugs. and when I wiggle the slide and barrel when the slide is forward, it wiggle significantly more than the match gun. I ordered some .356 coated bullets to try out. but most of the 40k rounds I fired were Xtreme 124 gr Plated bullets. Also, I don't clean the practice gun as much. maybe once in 5k? Link to comment Share on other sites More sharing options...
MemphisMechanic Posted October 12, 2016 Share Posted October 12, 2016 (edited) How often do you oil the practice gun between cleanings? Mine gets re-oiled each time I'm about to head to the range. My gun is likewise filthy for most of it's life, but I try to keep it well lubed. IMO, that's more important than keeping it clean. Edited October 12, 2016 by MemphisMechanic Link to comment Share on other sites More sharing options...
DOODS Posted October 12, 2016 Share Posted October 12, 2016 Maybe it's those 140pf ammo you shoot? Link to comment Share on other sites More sharing options...
johnbu Posted October 12, 2016 Share Posted October 12, 2016 The wiggle is the barrel moving independently of the slide. that affects accuracy. the slide/barrel assembly wiggling in the frame is of no concern. Does the barrel easily move while slide fully forward? The wear on the lugs is a bit of concern. You might need to have a competent smith inspect and see if it needs him to tighten the fit. However, since some loadings are accurate, I wouldn't think it's the cause. Still leaning toward the barrel fouling or the rounds in question slightly smaller in diameter. Are you currently running 0.355" projectiles? I run 356 coated. 3 hours ago, hwansikcjswo said: My practice gun has a lot of wear on the locking lugs. and when I wiggle the slide and barrel when the slide is forward, it wiggle significantly more than the match gun. I ordered some .356 coated bullets to try out. but most of the 40k rounds I fired were Xtreme 124 gr Plated bullets. Also, I don't clean the practice gun as much. maybe once in 5k? Link to comment Share on other sites More sharing options...
ShortBus Posted October 13, 2016 Share Posted October 13, 2016 Mine has more than 40k and zero signs of accuracy issues. Before I got it the stegger himself shot it and commented on its freakishly accurate ability. hows your crown look? Link to comment Share on other sites More sharing options...
oddjob Posted October 13, 2016 Share Posted October 13, 2016 On a somewhat related topic.....Is EAA/Tanfoglio the only place to get another barrel right now? Link to comment Share on other sites More sharing options...
JusticeOfToren Posted October 13, 2016 Share Posted October 13, 2016 35 minutes ago, oddjob said: On a somewhat related topic.....Is EAA/Tanfoglio the only place to get another barrel right now? I don't think EAA offers Stock 2 barrel in their web store. Maybe from Tanfoglio? I do see Limited Pro barrels for sale on EAA web store. Link to comment Share on other sites More sharing options...
waktasz Posted October 13, 2016 Share Posted October 13, 2016 My primary gun (practice and match gun, my backup never gets used) chrono'd 6pf slower than my backup when I had to go to it at a match this year. Looking inside the barrel the rifling is much less pronounced than on the hardly used gun but other than that, the main gun is just as accurate and has the best trigger of any CZ or tanfo I've ever held. EAA does sell them, I emailed them earlier this year about it. $328 for a new barrel. Link to comment Share on other sites More sharing options...
norbs007 Posted October 13, 2016 Share Posted October 13, 2016 (edited) Not listed but they do like waktasz said. Edited October 13, 2016 by norbs007 Correction Link to comment Share on other sites More sharing options...
highhope Posted October 14, 2016 Share Posted October 14, 2016 Does any factory make aftermarket match barrel for s2 9mm? thanks Link to comment Share on other sites More sharing options...
johnbu Posted October 14, 2016 Share Posted October 14, 2016 None.... yet. hopefully with the increased popularity someone will. Link to comment Share on other sites More sharing options...
b18prl Posted October 14, 2016 Share Posted October 14, 2016 Yea but when you want to order the barrel they'll tell you it's out of stock!!Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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