A friend of mine is having an issue with occasional light strikes in a 223 Remington 700 with a Timney 510 trigger.
The rifle shot fine for years but recently started having occasional light strikes. When I disassembled the bolt, I did find some grease had migrated between the firing pin, cocking piece, and the bolt tail adding a bit more drag on the firing pin.
Last night I disassembled the bolt, removed the firing pin spring, cleaned the excess lube, and reassembled the bolt minus the firing pin spring. The firing pin moves very freely in the bolt by itself, but in the rifle with the trigger pulled it seems the trigger is putting a lot of drag on the firing pin as it takes a decent amount of effort to push it forward with the trigger pulled. Now that it’s clean it will probably shoot OK again as it did for the last few years, but the trigger does still put a substantial amount of drag on the firing pin so the issue is likely to happen again.
I know this is an occasional issue with Timney triggers and certain receiver/bolt combinations (Short Action Customs has posted a couple videos on this issue but never names the “draggy” trigger manufacturer), but what’s the accepted fix? Does Timney need to swap out the sear to the lower “U” sear, or should I tell him just to swap to a TriggerTech or similar?
Thanks!
The rifle shot fine for years but recently started having occasional light strikes. When I disassembled the bolt, I did find some grease had migrated between the firing pin, cocking piece, and the bolt tail adding a bit more drag on the firing pin.
Last night I disassembled the bolt, removed the firing pin spring, cleaned the excess lube, and reassembled the bolt minus the firing pin spring. The firing pin moves very freely in the bolt by itself, but in the rifle with the trigger pulled it seems the trigger is putting a lot of drag on the firing pin as it takes a decent amount of effort to push it forward with the trigger pulled. Now that it’s clean it will probably shoot OK again as it did for the last few years, but the trigger does still put a substantial amount of drag on the firing pin so the issue is likely to happen again.
I know this is an occasional issue with Timney triggers and certain receiver/bolt combinations (Short Action Customs has posted a couple videos on this issue but never names the “draggy” trigger manufacturer), but what’s the accepted fix? Does Timney need to swap out the sear to the lower “U” sear, or should I tell him just to swap to a TriggerTech or similar?
Thanks!
