PatriotDefense Posted October 5, 2016 Share Posted October 5, 2016 With a bunch of new parts out on the market driving trigger pull weights to places many thought wouldn't be possible with the Tanfo platform some light strike issues have popped up. Many of the newer import guns we're seeing have barrels that are out of SAAMI spec. We're seeing tighter chambers, short/no free bore, and a smaller ID of the starting lands area of the rifling (might be due to the polygonal rifling) which could cause issues with coated bullets. Yes the crutch fix would be to load shorter but this doesn't address all the issues with your barrel. If your gun does fall into this category of an out of spec chamber it could cause your gun to sit slightly out of battery. This in return would cause light strikes or other issues. I've personally heard of a few guys that since have had their barrels reamed be able to drop down hammer spring weight and set off everything reliably. In conclusion make sure your ammo passes the plunk test and spins freely once it is in there, or if your able to cast a mold of your chamber. If your not able to run as light of springs as other due to light strikes this may be your area of concern. Link to comment Share on other sites More sharing options...
MissionaryMike Posted October 5, 2016 Share Posted October 5, 2016 Thanks for the info, Joe. Does PD offer barrel reaming services for barrels that are out of spec? Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 5, 2016 Author Share Posted October 5, 2016 Not as of now, we'll probably offer it to those who do trigger jobs through us. I'll start a new thread in our vendor section discussing his and who we trust with reaming your barrel as of now. Link to comment Share on other sites More sharing options...
superluckycat Posted October 5, 2016 Share Posted October 5, 2016 I recently picked up a used Stock II manufactured in 2015. I am having to reload to an OAL of 1.09" to pass the plunk test. Link to comment Share on other sites More sharing options...
MissionaryMike Posted October 5, 2016 Share Posted October 5, 2016 5 minutes ago, superluckycat said: I recently picked up a used Stock II manufactured in 2015. I am having to reload to an OAL of 1.09" to pass the plunk test. That's not that short compared to the reports of some others, 1.05" for instance. Link to comment Share on other sites More sharing options...
Deathray Posted October 5, 2016 Share Posted October 5, 2016 I'm curious as to if this is the reason my 2015 Stock II started shearing lugs like the barrel wasn't fitted correctly in my other thread. I never thought to check the chamber, and I really wish I had. Of course it got to Florida just in time for EAA to shut down for the hurricane so it's in delivery limbo. Link to comment Share on other sites More sharing options...
superluckycat Posted October 5, 2016 Share Posted October 5, 2016 1 hour ago, MissionaryMike said: That's not that short compared to the reports of some others, 1.05" for instance. Yeah, that is pretty short. Link to comment Share on other sites More sharing options...
nunez Posted October 6, 2016 Share Posted October 6, 2016 In addition to the plunk test, I found per another users very good suggestion to tap on the round with your finger and see if it will drop out freely when turning it upside down. After I got it reamed, they all fall out freely. Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 6, 2016 Author Share Posted October 6, 2016 Nunez, how's your gun running now after the barrel was reamed to spec? Link to comment Share on other sites More sharing options...
nunez Posted October 6, 2016 Share Posted October 6, 2016 14 hours ago, PatriotDefense said: Nunez, how's your gun running now after the barrel was reamed to spec? It's running great. Put in the 10# PD Hammer Spring (5 DA/Low 2 to 1.15oz SA) just to see and was surprised that I was getting less light primer strikes than I was with the 13#. About to get hit with a hurricane in a couple hours, but when its done I'm going to test the 12# Hammer Spring and see if I can get 100% with CCI Primers. And I'm going to do an accuracy test as well. I'll post all the info once I get it all figured out. Link to comment Share on other sites More sharing options...
ryridesmotox Posted October 6, 2016 Share Posted October 6, 2016 I wonder if Tanfoglio knows about this issue. A gun maker ought to fix their QC or machining to ensure they are kicking out properly sized chambers Link to comment Share on other sites More sharing options...
MemphisMechanic Posted October 6, 2016 Share Posted October 6, 2016 6 hours ago, nunez said: It's running great. Put in the 10# PD Hammer Spring (5 DA/Low 2 to 1.15oz SA) just to see and was surprised that I was getting less light primer strikes than I was with the 13#. About to get hit with a hurricane in a couple hours, but when its done I'm going to test the 12# Hammer Spring and see if I can get 100% with CCI Primers. And I'm going to do an accuracy test as well. I'll post all the info once I get it all figured out. What else is your gun equipped with internally and how's the trigger with the 12 pounder? Link to comment Share on other sites More sharing options...
Mike Morcillo Posted October 7, 2016 Share Posted October 7, 2016 Does anybody ever trim their brass for overall length? Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 7, 2016 Author Share Posted October 7, 2016 I've reached out to Eric G. as he's the closest person I know to someone at Tanfoglio. I've also reached out to EAA regarding the issue as well...... Time will tell Link to comment Share on other sites More sharing options...
MemphisMechanic Posted October 7, 2016 Share Posted October 7, 2016 11 minutes ago, Mike Morcillo said: Does anybody ever trim their brass for overall length? I've literally never met anyone (sane) who had that kind of time to waste. I'd go back to Glock / M&P before I dealt with a gun which was that much of a princess. No other handgun needs that. Link to comment Share on other sites More sharing options...
Deathray Posted October 7, 2016 Share Posted October 7, 2016 I'm not expecting anything out of EAA for at least a week or two though. Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 14, 2016 Author Share Posted October 14, 2016 Finally heard back from Tanfoglio on this topic and they claim they had an issue with the "Tooling" which i take it was their reamer.......... They have stated it has now been corrected, soooooooo i guess we're all good now. Link to comment Share on other sites More sharing options...
ElMateo487 Posted October 14, 2016 Share Posted October 14, 2016 Finally heard back from Tanfoglio on this topic and they claim they had an issue with the "Tooling" which i take it was their reamer.......... They have stated it has now been corrected, soooooooo i guess we're all good now. Lol. By all good now... meaning "you all have barrels out of spec. But people buying new guns won't. Everything is ok!"Did they say when this was fixed? Maybe people with newer guns don't have the problem and would be able to know by the production month. Link to comment Share on other sites More sharing options...
Deathray Posted October 14, 2016 Share Posted October 14, 2016 I might get to be the crash test dummy on that one. EAA has my pistol now, and I've got a feeling the shearing lugs could be related to that chamber issue. Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 14, 2016 Author Share Posted October 14, 2016 I've reached out for that additional information, more than likely it was brought to their attention by us bringing it up to them. Best thing to do is have your barrel reamed properly and move along...... Link to comment Share on other sites More sharing options...
ryridesmotox Posted October 14, 2016 Share Posted October 14, 2016 (edited) Yea if you send the barrel to Becin Grams, he will hog it out for nearly nothing compared with the time it takes to have eaa look at it. Edited October 14, 2016 by ryridesmotox Link to comment Share on other sites More sharing options...
ElMateo487 Posted October 14, 2016 Share Posted October 14, 2016 Yea if you send the barrel to Becin Grams, he will hog it out for nearly nothing co.pared with the time it takes to have eaa look at it.I am worried about someone opening it up too much, and losing accuracy. Is this something I shouldn't be worried about?Also, I would like to hear if anyone knows if Grams has any data on the barrels that have come to him, how many were actually out of spec or not. Link to comment Share on other sites More sharing options...
ryridesmotox Posted October 14, 2016 Share Posted October 14, 2016 He might give you data if you email him. I don't have the data immediately available or I would share it for sure. There are more than a few guys that have had this service done. Bevin builds open guns and stuff, so he isn't going to mess up accuracy of a gun. http://www.gramsengineering.com Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 14, 2016 Author Share Posted October 14, 2016 Bevin is the guy to talk to, he's using a custom reamer to his specs and its right on the money for Tanfo guys. I had a pretty in depth conversation with him last week and it sounds like just about every barrel he has gotten from a tanfo was out of spec.... Link to comment Share on other sites More sharing options...
PatriotDefense Posted October 14, 2016 Author Share Posted October 14, 2016 I know the couple dozen that we have had come through doing trigger work to have had short chambers and the starting lands area seems tighter than SAAMI spec. Link to comment Share on other sites More sharing options...
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