Speedsouthshooting Posted September 5, 2016 Share Posted September 5, 2016 The only change to the gun before the match today was tuning the extractor. Never has this gun had light primer strikes. Today about 2 out of 20 were hitting light. I replaced the firing pin and spring during the match but the problem still exist. I noticed the firing pin stop seemed a bit loose but not sure if that the issue. I have a aftec on order. Thanks Link to comment Share on other sites More sharing options...
blacklab Posted September 5, 2016 Share Posted September 5, 2016 When my gun was acting like this it was high primers. Might be something to look at. Link to comment Share on other sites More sharing options...
brytec Posted September 5, 2016 Share Posted September 5, 2016 I had light strikes when I switched from WSP to CCI small rifle. So I had to switch back to WSP and since then 0 issues. Also keep in mind to keep the spring and firing pin dry and free of oil or cleaning solution!Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Trent1k1 Posted September 5, 2016 Share Posted September 5, 2016 High primers. Is the ammo reloaded? Did you change anything on your press if you do? (Check the plate is tight enough) Check the mainspring housing isn't full of dirt and grit. If that spring is old, might think about replacing it with a 16 or 17 lb spring. If you have another gun, can check if the rounds work in that gun without issues. Link to comment Share on other sites More sharing options...
BLUTO Posted September 5, 2016 Share Posted September 5, 2016 20 minutes ago, Trent1k1 said: High primers. Is the ammo reloaded? Did you change anything on your press if you do? (Check the plate is tight enough) Check the mainspring housing isn't full of dirt and grit. If that spring is old, might think about replacing it with a 16 or 17 lb spring. If you have another gun, can check if the rounds work in that gun without issues. What Trent said. Extractors got nothing to do with it........ Link to comment Share on other sites More sharing options...
Speedsouthshooting Posted September 6, 2016 Author Share Posted September 6, 2016 Ok. Before the match Sunday I replaced the extractor form a new sti edge into my open gun. After that "during the match" I started having light primer strikes. When I got home I pulled the slide assembly off and placed a round into the extractor and the hook is machined deeper than the one in the open gun. The cartridge was sitting about 1/16 th away from the breechface. I've ordered a aftec, a extended firing pin and a new firing pin stop. Thanks for the input Link to comment Share on other sites More sharing options...
Speedsouthshooting Posted September 7, 2016 Author Share Posted September 7, 2016 New aftec. So this couldn't effect primer strikes? Link to comment Share on other sites More sharing options...
Speedsouthshooting Posted September 7, 2016 Author Share Posted September 7, 2016 Tried 1 spring in the rear and it was worse. Used two springs and still a huge gap. Ordered a new firing pin stop due to mine being slightly loose. Also ordered an extended firing pin. Link to comment Share on other sites More sharing options...
Tino2212 Posted September 7, 2016 Share Posted September 7, 2016 Maybe a silly question , but why did you change the extractor did you have problems with the old one ? Link to comment Share on other sites More sharing options...
Speedsouthshooting Posted September 7, 2016 Author Share Posted September 7, 2016 Yes. Would have to tune after every two mags. I had a Trojan that had the same issue. Not a fan of sti's extractors Link to comment Share on other sites More sharing options...
digi531 Posted September 7, 2016 Share Posted September 7, 2016 Some space behind the round as your picture indicates is ok with the slide unlocked, the space will close when in battery. Try the extended F.P. that should solve the issue. Also, replace the mainspring with a new 17 lb. and a slightly loose firing pin stop should not be a problem. Link to comment Share on other sites More sharing options...
BLUTO Posted September 7, 2016 Share Posted September 7, 2016 Speedsouth - sent you a PM Link to comment Share on other sites More sharing options...
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