Bolt Problems

[A-Tip]

Hi all, I just recently started having problems with my Christensen Arms bolt. The rifle is a semi-custom build, CA action, proof barrel, grayboe stock, triggertech hunter trigger etc etc. The issue i am facing, is that the firing pin will not go all the way forward sometimes. I do have David Tubb Springs in the bolt but this problem just started happening not long ago. I dont know if its due to the cold weather, but i havent had a problem with anything until now. Do we think that its the springs? Or possibly the trigger? Other then putting the old spring back in, what other things should i try to resolve this issue or has anyone else had trouble with the DT springs or a combo like this? TIA

 

[ShtrRdy]

Was it very cold out when this happened? If so, it's possible there is some lube that is slowing the firing pin down.

A trigger to cocking piece problem could be to blame. Do you have another trigger you could try.

Inspect the firing pin spring to ensure it looks okay.

 

[A-Tip]

The problem will occur in a warm
Environment as well. And there shouldnt be any lube, upon disassembly, i hosed it with gun scrubber. I do have another trigger i can try. Do you think there is a possibility that the trigger is that dirty as well?

 

[ShtrRdy]

Has the trigger worked properly in this rifle for a long time?

How long have you had this rifle in it's current configuration?

 

[A-Tip]

The trigger has worked perfectly since purchase. The rifle has been configured like this for about 4 months and worked great until about 1 month ago. Im guessing something may be wrong with the trigger.

 

[lancetkenyon]

Check the tip of the firing pin to make sure it hasn't actually chipped or sheared off?
Or no debris is in the bolt body, causing the firing pin from moving fully forward?

 

[A-Tip]

Correct, clean as can be.

 

[lancetkenyon]

Wolff Blitzschnell 28# spring. Cured one of my old R700 bolt/firing pin issues.

https://www.gunsprings.com/REMINGTON/700,+721,+725+-+Long+Actions/cID2/mID108/dID212

 

[K.E.C. Darkside]

Wolff Blitzschnell 28# spring. Cured one of my old R700 bolt/firing pin issues.

https://www.gunsprings.com/REMINGTON/700,+721,+725+-+Long+Actions/cID2/mID108/dID212

Did you change the weight or was your spring- sprung.

 

[lancetkenyon]

Did you change the weight or was your spring- sprung.

I had a few FTF, so I swapped the original spring and upgraded from 24# to 28#. No more issues.

 

[MagnumManiac]

Have you cleaned the trigger with lighter fluid, mineral spirits or other solvents lately?
I had one of my F-class rifles start doing this, it was a combination of gunk in the bolt body and gunk in the Jewel trigger from standing in the club rifle racks with dust being kicked up by the vehicles going back and forth from the range.
I no longer leave my rifles there.

I take Zippo lighter fluid with me everywhere…

Cheers.

 

[Greyfox]

Check/disassemble your firing pin " cross pin" that secures the firing pin to the bolt head. While it may appear fine in the assembled position, it may be fractured causing the firing pin to slip, causing the type of symptoms you are experiencing. The design of the bolt head/ cross pin connection is similar to the Remington 700 design. I have had this happen, particularly with heavier springs, and/or excessive dry firing. Even with the stock springs.
Shown: Schematic and photo of new and a fractured firing pin "cross pin".

 

[Dirtrax]

Check/disassemble your firing pin " cross pin" that secures the firing pin to the bolt head. While it may appear fine in the assembled position, it may be fractured causing the firing pin to slip, causing the type of symptoms you are experiencing. The design of the bolt head/ cross pin connection is similar to the Remington 700 design. I have had this happen, particularly with heavier springs, and/or excessive dry firing. Even with the stock springs.
Shown: Schematic and photo of new and a fractured firing pin "cross pin".
View attachment 637466View attachment 637467

Funny you should mention this. It happened to me recently. I replaced the whole assembly with one from PTG.

 

[Buzzsaw]

Custom triggers DONT need aftermarket springs. You screwed up, so just go back to a factory custom trigger. Bix n Andy or Trigger Tech Diamond. Poor little Jewel and its gunsmith owner.