Foxbat Posted December 17, 2012 Share Posted December 17, 2012 One of my open guns suddenly started failing to ignite, so I suspect the main spring gave. Not sure what wight spring is there, so asking for recommendation - I have several different ones on hands. Using WInchester primers exclusively. I have 16, 17, 19, 20 and 21 here. Link to comment Share on other sites More sharing options...
Desmo412 Posted December 17, 2012 Share Posted December 17, 2012 17 seems to be the standard. I use Fed small rifle primers, and have never had a light strike. Link to comment Share on other sites More sharing options...
gng4life Posted December 17, 2012 Share Posted December 17, 2012 I have a 16 in one and 17 in two, all seem to light off all the primers that I put in front of them... Link to comment Share on other sites More sharing options...
A45100 Posted December 17, 2012 Share Posted December 17, 2012 I run 17# IMSI springs across the board in both my limited and open guns and have never had a single problem. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted December 17, 2012 Share Posted December 17, 2012 (edited) Hello: You may want to see if your firing pin spring broke and the piece is not allowing the firing pin to hit the primer very well. I use a 17lb ISMI mainspring. I have tried a 15lb a couple of times but the 17 makes it go bang every time. A Dawson firing pin works on some very hard primers like Remington benchrest. I forgot to add that the mainspring housing may have a burr inside that is not allowing the spring to come up cleanly. Thanks, Eric Edited December 17, 2012 by Aircooled6racer Link to comment Share on other sites More sharing options...
CocoBolo Posted December 17, 2012 Share Posted December 17, 2012 Check your breach face, and the firing pin hole, if you have had primer flow thru then it messes up the firing pin hole, and you get ignition failures. 17# is my choice for open guns. Link to comment Share on other sites More sharing options...
Foxbat Posted December 17, 2012 Author Share Posted December 17, 2012 Thank you guys, good answers! The pin and breach face look perfect, so I suspect it was indeed the spring. I then called Cameron, who built the gun, and they said they put 15# into their open guns, so I went with the 16# spring that I had. The old one was about 1/4" shorter than new, and felt more sluggish. Will test in a couple of days. Link to comment Share on other sites More sharing options...
ormondopen Posted December 18, 2012 Share Posted December 18, 2012 i run a 15# w/ a limcat XL FP in limited and open Link to comment Share on other sites More sharing options...
eric nielsen Posted December 18, 2012 Share Posted December 18, 2012 Someone made an 18lb spring because that's what I use. With a 15lb it feels like there's no break on my trigger, just touch & bang, I don't like that. As mentioned, FP springs sometimes break off a coil or two, also primer flow can mess with ignition so i use an extra-long FP (Dawson and McLearn both make similar XL firing pins). With open guns it's a real good idea before each match to at least remove the FP and the extractor and clean the tunnels out with a Q-tip and solvent, also clean the extractor hook, maybe run a weighted bore snake through the barrel. Don't have to field strip, you can do all that with the slide locked back. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now