bayougump Posted March 9, 2014 Share Posted March 9, 2014 Gentleman, As I have posted before I purchased a Stock II a little over a month ago. I sent it to the gunsmith and had it fine tuned, trigger job, competition parts, etc. I received it back and it ran flawlessly up until last weekend. Since then it's been downhill. I shoot bayou 147s in production and use only Federal primers. I started having light strikes. None in DA, only in SA. I checked and made sure everything was clean, no debris in firing channel, and that all primers were seated. I was told to cut a couple coils off firing pin spring since the hammer was not striking the backplate flush after firing. I did that and the hammer hits and stays flush now. Had a match yesterday and same thing happened again, light strikes. So I replaced the Wolff firing pin spring with a factory spring cut down to 65mm to start. Had a steel match today and all started fine then the light strikes ensued. I was told may have to cut another coil or 2 as spring sets and did and to no avail. Also the hammer would end in the half cock position after firing a SA shot today also. Never happened before today. I'm sending it back to gunsmith but curious as what y'all think could cause or be the problem? I haven't taken the trigger out, sear, hammer spring or anything, haven't touched internal guts except cleaning excess carbon build up with a q-tip. On a side note, I changed the recoil spring from a 9lb to stock spring just because while practicing after the match and the light strikes basically ceased but hammer still only goes to 1/2 cock position after firing SA instead of being all the way back before pulling trigger. I thought that was weird. The SA trigger pull this afternoon felt way too light which led me to believe something more going on and I think it's above my level of expertise to fix. Thanks in advance Sent from my Flux Capacitor Link to comment Share on other sites More sharing options...
BeerBaron Posted March 10, 2014 Share Posted March 10, 2014 ok, well firstly SA should give a harder strike than DA (as DA the hammer doesn't go as far back before releasing). it sounds to me like the timing is out and after an SA shot the hammer is dropping to the half cock notch and when you pull the trigger you are basically getting 3/4 of a DA stroke. so the trigger pull is lifting it off the half cock notch and then dropping it in DA. at least that's what it sounds like. was there any timing problem evident before the light strikes started? my main advice is what you're doing. send it back. Link to comment Share on other sites More sharing options...
Nealio Posted March 10, 2014 Share Posted March 10, 2014 Hammer follow from the sear rounding off? Link to comment Share on other sites More sharing options...
jmbaccolyte Posted March 10, 2014 Share Posted March 10, 2014 (edited) Did you buy it new? And how many trigger pulls do you have through it? Did you oil the hammer/sear interface regularly? Is the hammer falling all the way through or stopping at the half-cock notch? Edited March 10, 2014 by jmbaccolyte Link to comment Share on other sites More sharing options...
JB38Super Posted March 10, 2014 Share Posted March 10, 2014 You are seating the bullets too long and the gun is barely going into battery. Some of the energy of the hammer is being lost. When you switched to a heavier recoil spring it is driving the slide and round fully forward. Try seating deeper or throating barrel The half cock deal; the hammer is actually bouncing back into half cock when dry fired. It won't do that with a round or dummy in chamber. Just the "wrong" length of firing pin return spring Link to comment Share on other sites More sharing options...
kneelingatlas Posted March 10, 2014 Share Posted March 10, 2014 That's some good stuff JB, I just thought of another possibility: if your over travel screw is dialed in too tight the half clock hooks could be catching on the sear on its way forward. Hold the trigger all the way to the rear and work the hammer with your thumb and feel for contact with the sear. Link to comment Share on other sites More sharing options...
bayougump Posted March 10, 2014 Author Share Posted March 10, 2014 The half cock thing is firing live, not dry fire. The OAL is 1.115-1.120 on my loads and ran fine until last weekend. When fired the hammer goes all the way forward and hits back plate. But if it's a single action shot, instead of the hammer returning all the way back after the shot is fired like it had before, it only comes to 1/2 cock position once slide moves all the way back forward and ready for next shot. I can manually pull hammer fully back, rack slide fully back, but after a SA shot, it comes to rest at half cock position. I pinned trigger back and checked to see if hammer was catching any interference with sear and it wasn't. Total rd count is no more than 2K. Sent from my Flux Capacitor Link to comment Share on other sites More sharing options...
bayougump Posted March 10, 2014 Author Share Posted March 10, 2014 BeerBaron, there was no timing issues when I got it back from gunsmith, it was fine tuned perfectly. What you described sounds pretty much spot on. It's like I get a pull in between what a DA and SA should feel like Sent from my Flux Capacitor Link to comment Share on other sites More sharing options...
Nealio Posted March 10, 2014 Share Posted March 10, 2014 I stick with my original asessment: hammer follow Link to comment Share on other sites More sharing options...
bayougump Posted March 10, 2014 Author Share Posted March 10, 2014 I shipped it to the gunsmith this morning so I hopefully will know in the next couple of days what the issue was as it is puzzling me. Thanks for the replies though. Link to comment Share on other sites More sharing options...
Savageman25 Posted March 10, 2014 Share Posted March 10, 2014 I'll second Nealio. You'll want to convince yourself it's not the sear due to the gun not having many rounds. I went through the same thing when I had to work on my limited after having a very low round count. My advice. If you are planning on getting more tanfoglios in the future (say this because they are addicting, as we have talked about on this forum) is to get yourself a hammer, roll pin punch set, gun block, and some sharpening stones. Build up some courage and explore a little. Do research on here, ask questions and work on that gun yourself. Guns, most of the time, are simplistic. I have faith that you can do it. It'll save you those gunsmithing fees, and you'll most likely enjoy working on it. Just don't be in a rush. Link to comment Share on other sites More sharing options...
kneelingatlas Posted March 10, 2014 Share Posted March 10, 2014 (edited) It'll save you those gunsmithing fees, and you'll most likely enjoy working on it. Just don't be in a rush. My advice. If you are planning on getting more tanfoglios in the future (say this because they are addicting, as we have talked about on this forum) is to get yourself a hammer, roll pin punch set, gun block, and some sharpening stones. Build up some courage and explore a little. Do research on here, ask questions and work on that gun yourself. Guns, most of the time, are simplistic. I have faith that you can do it. Nobody ever told me I needed that sutff!?! I've been using a hacksaw, heavy rock and finish nails! Edited March 10, 2014 by kneelingatlas Link to comment Share on other sites More sharing options...
Savageman25 Posted March 10, 2014 Share Posted March 10, 2014 It'll save you those gunsmithing fees, and you'll most likely enjoy working on it. Just don't be in a rush. My advice. If you are planning on getting more tanfoglios in the future (say this because they are addicting, as we have talked about on this forum) is to get yourself a hammer, roll pin punch set, gun block, and some sharpening stones. Build up some courage and explore a little. Do research on here, ask questions and work on that gun yourself. Guns, most of the time, are simplistic. I have faith that you can do it. Nobody ever told me I needed that sutff!?! I've been using a hacksaw, heavy rock and finish nails! Prove it. Jk Link to comment Share on other sites More sharing options...
bayougump Posted March 11, 2014 Author Share Posted March 11, 2014 Zach, that is something I want to do, learn to fix myself one day but until then, it's better in an experts hands, lol Sent from my flux capacitor Link to comment Share on other sites More sharing options...
bayougump Posted March 11, 2014 Author Share Posted March 11, 2014 And yes they are very addicting, I already want to sell my G34 whole production rig for another Tanfo:-) Sent from my flux capacitor Link to comment Share on other sites More sharing options...
Torogi Posted March 11, 2014 Share Posted March 11, 2014 One other thing, check and see the sear spring. I had a CZ sear spring which is lighter and i have been experiencing hammer follow lately. CZ sear spring has 2 coils, Tanfo/EAA has 3 coils. Link to comment Share on other sites More sharing options...
Nealio Posted March 11, 2014 Share Posted March 11, 2014 Nobody ever told me I needed that sutff!?! I've been using a hacksaw, heavy rock and finish nails! Use a firing pin, its harder than finish nails. I've worn out like 30 finish nails Link to comment Share on other sites More sharing options...
Savageman25 Posted March 12, 2014 Share Posted March 12, 2014 Im not zach, but I can see how it is easy to confuse us. Sent from my SCH-I535 using Tapatalk Link to comment Share on other sites More sharing options...
BeerBaron Posted March 12, 2014 Share Posted March 12, 2014 I stick with my original asessment: hammer follow yeah I'm tending to lean that way too. hammer follow or gun not timed properly. either way it's probably not a problem I'd recommend someone tackle as their first foray into home gun smithing. and since a gunsmith did the mods, I'd be sending it back to the smith for rectification. some of the other ideas sounded good too. but without holding/seeing the thing it's hard to diagnose over the net. Link to comment Share on other sites More sharing options...
bayougump Posted March 12, 2014 Author Share Posted March 12, 2014 Dumb question but what is "hammer Follow"? What could potentially cause the timing to get outta whack? I didn't strip it apart and remove anything or try adjusting stuff, can it just happen by firing overtime? Just curious so I know and learn more Sent from my flux capacitor Link to comment Share on other sites More sharing options...
Savageman25 Posted March 12, 2014 Share Posted March 12, 2014 Hammer follow is when the hammer does not engage the sear at the fully cocked position, therefore causing the hammer to fall to the half cocked position. You will most likely be able to pull the hammer back to the fully cocked position and it will stay, by manually moving it or racking the slide. But the violence of a fired round and the slide moving rearward and back again to the charged position rapidly, causes the hammer to follow the slide back to the half cocked position. This issue is normally due to the sear being worn . There is a little way to test this. Its discussed on the forum. But since you dont have the gun in your possession its going to be hard to try. Sent from my SCH-I535 using Tapatalk Link to comment Share on other sites More sharing options...
bayougump Posted March 12, 2014 Author Share Posted March 12, 2014 Ok, thanks savage, I'll have it back tomorrow just in time to leave out heading to Alabama sectional which is best news I got last few days:-) Sent from my flux capacitor Link to comment Share on other sites More sharing options...
Vanniek71 Posted March 12, 2014 Share Posted March 12, 2014 Has the smith told you what he found? Link to comment Share on other sites More sharing options...
aleks10 Posted April 2, 2014 Share Posted April 2, 2014 If I may I´ll use this topic, I have the same problem after instaling new Extreme hammer and a new one piece sear ( long )... I had to file off the sear safety leg and also the reset leg and now when dry firing sometimes ( when I make a quick pull in DA ) the hammer stays in half cocked position... Where did I make a mistake Thank you for your help... Link to comment Share on other sites More sharing options...
Nealio Posted April 3, 2014 Share Posted April 3, 2014 What did you file on the reset leg? Link to comment Share on other sites More sharing options...
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