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Volquartsen Competition Bolt Issue

This is a discussion on Volquartsen Competition Bolt Issue within the Ruger Rimfires forums, part of the Pistol & Revolver Forum category; Installed this in my Mk II stainless Target model but I could not fully seat the bolt stop pin. This was due to the curved ...


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Old October 4th, 2013, 09:36 AM   #1
 
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Volquartsen Competition Bolt Issue

Installed this in my Mk II stainless Target model but I could not fully seat the bolt stop pin. This was due to the curved end of the recoil spring protruding about 1/16" into the stop pin hole. Volquartsen Tech Support suggested I rap the mainspring housing with a rubber mallet to seat the pin. No joy. Spoke with them again, they issued an RMA so I could send the bolt to them. It's now in transit back to me.

Volquartsen replaced the extractor with a "new style" one and again suggested rapping the housing with a mallet, a solution that I'm not liking if it will be needed on a regular basis.

My questions:

1. Has anyone else had this problem, and if so how did you solve it?
2. Any suggestions as to a fix that doesn't involve whacking the mainspring housing every time I reassemble the gun?

My Mark II was built in 1999 if that matters.

Props to Volquartsen's Tech Support, they were very responsive and I think they did their best.

Thanks for any help or suggestions.



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Old October 4th, 2013, 03:41 PM   #2
 
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What I've found with some particularly difficult seating MSH bolt stop pins. Once you're sure that there is no alignment issues between the receiver and the frame - check this by seating the bolt stop pin in the pistol with the bolt removed. Sometimes the extractor tension pushes the bolt slightly rearwards causing a very similar alignment problem that you're experiencing. What I do is insert the bolt, take one of my index fingers and push on the back of the bolt to seat it flush against the breech face, and then insert the bolt stop into the frame and receiver all while maintaining enough pressure on the back of the bolt to hold it fast against the breech face. Usually this is all that is needed to seat the bolt stop that seems as if it won't push past the small metal button on the back of the recoil spring guide.

Just tapping on the back of the bolt will move the bolt forward, but only momentarily, then it will just move back out again as the extractor claw pushes against the angled extractor slot in the barrel.

Hope this helps.

R,
Bullseye
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Old October 5th, 2013, 05:35 AM   #3
 
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Bullseye:

Thanks for the detailed and educational reply. I had no clue about possible extractor involvement in the problem. Your info plus the fact that Volquartsen installed a "new type" extractor makes me more hopeful about a solution. Once I get the bolt back early next I'll report on how things went.
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Old October 9th, 2013, 12:53 PM   #4
 
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Talking

Update:

Got the Volquartsen bolt back today. They installed a new extractor with a different profile. The usual rounded end that fits into the slot in the breech face is now squared off resulting in about 1/32 - 1/16" less protrusion from the bolt. The curved end of the recoil spring rod now protrudes into the bolt stop pin hole by less than that same amount and I can assemble the Mk II as usual. I'm liking the ease of cocking with that knob on the bolt, as does my wife.

Won't have a chance to fire to check extraction for awhile, but at least Volquartsen timely fixed this problem. Good on them!

Also many thanks again to Bullseye for the info.
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