Terminus firing pin spring replacement??

[Dr. Matt]

I could use a little help with my terminus lite action. It's only got about 500 rounds thru it. It's 7mm PRC, suppressed with a trigger tech. It's been getting worse lately but at the range today only one in 5 rounds would fire. Shooting Hornady precision hunter factory ammo. The pin protrudes .063 and everything is squeaky clean. The spring feels very strong but I know that's subjective.

 

[shoot4fun]

Those are light strikes for sure.
May I ask, have you had any primers pierce in that rifle?
With 500 rounds it's more likely trash in the bolt impeding the firing pin or something amiss with that TT Trigger.
Joel Russo, owner of Terminus, is a great guy and has been very customer focused in my experiences with him. I would contact him and see what he suggests doing.

 

[Dr. Matt]

Thanks, I will. This started after about 80 suppressed shots. It fouls so fast now so I'm betting on dirt, not mechanical.

 

[C.E.Smith043]

To me those primes look seated too deep. Are you able to measure the depth? (How far down below the case)

 

[Dr. Matt]

Ill check seating depth on the primers tonight. This is factory ammo.

 

[C.E.Smith043]

Ill check seating depth on the primers tonight. This is factory ammo.

Also, like mentioned above, the trigger could also be the culprit. Make sure there's enough over travel in the trigger so that the firing pin and spring are able to clear when the sear falls.

 

[Dr. Matt]

Thanks for the input. I found the powder solvent I was using was leaving a sticky mess inside the bolt and everywhere else. Cleaned it up and shot a match today with no issues at all. Lesson learned.

 

[Rank Amateur]

Thanks for the input. I found the powder solvent I was using was leaving a sticky mess inside the bolt and everywhere else. Cleaned it up and shot a match today with no issues at all. Lesson learned.

Just out of interest, which solvent?

 

[Sandstorm]

I dont think too deep is the problem Sir.

 

[FeMan]

I dont think too deep is the problem Sir.

Not with that much fp protrusion.

 

[Dr. Matt]

Just out of interest, which solvent?

Butches bore shine

 

[Webster]

I could use a little help with my terminus lite action. It's only got about 500 rounds thru it. It's 7mm PRC, suppressed with a trigger tech. It's been getting worse lately but at the range today only one in 5 rounds would fire. Shooting Hornady precision hunter factory ammo. The pin protrudes .063 and everything is squeaky clean. The spring feels very strong but I know that's subjective.

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Look at the back of the firing pin that sticks out of the shroud when the rifle is cocked. If you see scuffing on part that sticks out you have excessive rubbing of the FP in the shroud. A little petroleum oil may help. Both my REM 700's have a lot of scuffing.