reaper1 Posted January 1, 2017 Share Posted January 1, 2017 Hi, My TF Stock II suffer FTF issue, never had this problem with 7,5g S&B ammo, it started yesterday with 8g S&B - both magazines. I slightly upgraded my TF, I've changed: Tanfoglio Xtreme Hammer Spring - Model : Medium Tanfoglio Xtreme Sear Lever - Model : Regular Recoil Spring - Model : 56AA - 10 lbs Tanfoglio Xtreme Firing Pin Spring - Model : Medium And as mentioned before had no issues on 7,5g rounds. I went through below topics: http://forums.brianenos.com/index.php?/topic/237108-getting-discouraged-wnew-stock-ii-failure-to-feed/ http://forums.brianenos.com/index.php?/topic/242395-double-feed-with-weak-recoil-springs-next-round-hitting-feed-ramp/ https://tanfo11.com/gunsmithing.html This is how it looks like in my TF [the edge which should be chamfered] Compared to CZ SHADOW [which is chamfered by the factory] Tanfoglio itself: So, just to be clear, I should make this edge to look exactly the same as in my CZ Shadow, shouldn't I? Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 1, 2017 Share Posted January 1, 2017 (edited) I would say that's a good guide, yes. You mean FTF as in failure to feed, correct? You do not mean failure to fire. (The gun is jamming while feeding the last round, right?) Are your magazines numbered so you can confirm that it happens with every single mag equally? Step one is always to make sure the malfunction isn't taking place with the same magazine each time. Or happening to several magazines and not with the rest. Edited January 1, 2017 by MemphisMechanic Link to comment Share on other sites More sharing options...
reaper1 Posted January 1, 2017 Author Share Posted January 1, 2017 Yes, I meant Failure To Feed and yes, only with last round - I have two magazines and it happens on both. Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 1, 2017 Share Posted January 1, 2017 Explain the jam that occurs with as much detail as possible. Are you loading this ammunition or is it factory stuff? How much detail can you give us on it? Link to comment Share on other sites More sharing options...
reaper1 Posted January 1, 2017 Author Share Posted January 1, 2017 (edited) This is exactly how it looks like: I use factory ammo - with 7,5g S&B had no issues so far, jams started since I tried 8g S&B Oh, sometimes I only have to touch the slide to make it insert the round into the chamber. Edited January 1, 2017 by reaper1 Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 1, 2017 Share Posted January 1, 2017 Have you polished the breechface at all? Check to see if there's a rough edge around the firing pin hole - that's not unheard of. Is the factory ammo or reloads? Link to comment Share on other sites More sharing options...
ryridesmotox Posted January 1, 2017 Share Posted January 1, 2017 As johnbu said in another thread... You may want to break the sharp edge of the bottom of the breech face. Its rounded in most other firearms for a reason. Tango either ignores it or doenst care. Link to comment Share on other sites More sharing options...
reaper1 Posted January 1, 2017 Author Share Posted January 1, 2017 (edited) Will try to break this sharp edge and make it look more like in CZ Shadow (pic couple of posts ealier). BTW. 10lbs spring should has the same length as factory one? Edited January 1, 2017 by reaper1 Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 1, 2017 Share Posted January 1, 2017 Those of us in the USA use Wolff brand recoil springs, so we are not using the EGD or factory springs like our international friends are. Link to comment Share on other sites More sharing options...
johnbu Posted January 2, 2017 Share Posted January 2, 2017 The last round has the least mag spring pressure so the least friction. Logically, it will be easiest to slide foreward. Polish that rib mirror bright, add a 1/16" chamfer to that sharp edge, polish the breech face and extractor hook. 95% of your issue should be solved. That last bit will be actual mag issues. They do wear out, get banged, dented, etc. Good luck! Link to comment Share on other sites More sharing options...
reaper1 Posted January 2, 2017 Author Share Posted January 2, 2017 I'm just wondering...if magazine follower is not getting hit by the bottom of the slide (in my case), what is the point of chamfer that edge? Link to comment Share on other sites More sharing options...
zombywoof Posted January 2, 2017 Share Posted January 2, 2017 5 hours ago, reaper1 said: I'm just wondering...if magazine follower is not getting hit by the bottom of the slide (in my case), what is the point of chamfer that edge? Maybe your mag catch is out of spec? Link to comment Share on other sites More sharing options...
johnbu Posted January 2, 2017 Share Posted January 2, 2017 The purpose is to stop the sharp edge from dragging an extra round foreward causing a failure to feed error. 5 hours ago, reaper1 said: I'm just wondering...if magazine follower is not getting hit by the bottom of the slide (in my case), what is the point of chamfer that edge? Link to comment Share on other sites More sharing options...
reaper1 Posted January 2, 2017 Author Share Posted January 2, 2017 Guys, thank you all. I guess no-one knows the answer but how is it possible that high quality gun has such a factory defect (if I may call it this way). This is the very last thing I'd expect - that brand new, high quality gun, would need to be corrected.... Link to comment Share on other sites More sharing options...
johnbu Posted January 2, 2017 Share Posted January 2, 2017 (Shrugs shoulders) To save 0.0001 cent per gun? Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 2, 2017 Share Posted January 2, 2017 2 hours ago, reaper1 said: This is the very last thing I'd expect - that brand new, high quality gun, would need to be corrected.... Then I will be interested to hear your reaction when you learn that Tanfoglio went years without being able to machine the chamber properly in $900 guns. Link to comment Share on other sites More sharing options...
johnbu Posted January 2, 2017 Share Posted January 2, 2017 Shhhhh! Link to comment Share on other sites More sharing options...
mfs Posted January 13, 2017 Share Posted January 13, 2017 I was running into the problem of second to last round jamming. followed johnbu advise and polished the timing block (rib) and put a chamfer on the corner. So far slidelock every time, all mags. thanks for the tip Link to comment Share on other sites More sharing options...
johnbu Posted January 13, 2017 Share Posted January 13, 2017 Bill's in the mail ! Lol. Glad it's running right! Link to comment Share on other sites More sharing options...
reaper1 Posted September 20, 2017 Author Share Posted September 20, 2017 (edited) Well, during the last competition I had a tons of FTFs So, I decided to chamfer that edged. This is how it looks like: I did not test it yet, but this Saturday I will have opportunity doing another competitions. PS. I hope I didn't break my gun, this is the best I could do (PICs above ) Any suggestions? Edited September 20, 2017 by reaper1 Link to comment Share on other sites More sharing options...
MemphisMechanic Posted September 20, 2017 Share Posted September 20, 2017 Yes. Shoot it. You didn’t hurt anything. Link to comment Share on other sites More sharing options...
yigal Posted September 20, 2017 Share Posted September 20, 2017 can you send pic. of feed ramp of the barrel please? they have sometimes not properly finished feed ramp. Link to comment Share on other sites More sharing options...
reaper1 Posted September 20, 2017 Author Share Posted September 20, 2017 1 hour ago, yigal said: can you send pic. of feed ramp of the barrel please? they have sometimes not properly finished feed ramp. Sure: Link to comment Share on other sites More sharing options...
yigal Posted September 20, 2017 Share Posted September 20, 2017 (edited) from this side the angle looks o.k . but it looks on last pic. that it need better polish - like mirror. the most important place : meeting between feed ramp and the chamber must be perfectly rounded (not too deep- brass need support) and polished. pic. from side and 45 deg. can be better choice. extractor looks o.k. i don't see any broken edges. Edited September 20, 2017 by yigal Link to comment Share on other sites More sharing options...
reaper1 Posted September 20, 2017 Author Share Posted September 20, 2017 1 hour ago, yigal said: from this side the angle looks o.k . but it looks on last pic. that it need better polish - like mirror. the most important place : meeting between feed ramp and the chamber must be perfectly rounded (not too deep- brass need support) and polished. pic. from side and 45 deg. can be better choice. extractor looks o.k. i don't see any broken edges. Maybe these photos will be helpful: Link to comment Share on other sites More sharing options...
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