by davidphantom » 15 Mar 2016, 10:28 am
Hi, have had a Churchill trap for over 2 years, 6 moths after purchasing I had the same problem, on disassembly I found that the locking mechanism holding pins in place had unwound and therefore firing pins couldn't strike as hard. Used low strength loctite to secure threads on mechanism. All good after that. Advised NIOA of problem, they said never heard of that problem before.
Just had another look yesterday as had 4 misfires over a 2 day shoot on bottom barrel, top barrel pin mechanism had started to unscrew again!
Which didn't tell me why bottom barrel misfires. Using bronze wing terminator shells, no problem with previous 10 slabs of ammo.
Most shells have a decent dent in shell, misfires have much slighter dent.
Check that pin locking mechanism not unscrewing,
Cheers
Dave