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Mosin Nagant Repairs & Restoration

Stiff bolt Cycle

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Stiff bolt Cycle

Postby ftab » Sun Jan 26, 2014 5:49 pm

Hello guys, I am new to this sight. I have an issue maybe someone can help with. We have 2 Mosin rifles and the same issue with both. Cartridges cycle fine until we fire the weapon, after firing the weapon the Bolt is so hard to pull back to cycle another round.
Can anyone tell me what may be the problem and how to fix it?

Thanks a bunch
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Re: Stiff bolt Cycle

Postby USSR » Sun Jan 26, 2014 6:37 pm

Here is a video I made for my YouTube channel.

http://www.youtube.com/watch?v=eR-ieekFpwc
делать это в одном кадре
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Re: Stiff bolt Cycle

Postby farmerboy78 » Sun Jan 26, 2014 8:09 pm

What type of ammo are you shooting and have you taken the bolt apart and cleaned it thoroughly?
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Re: Stiff bolt Cycle

Postby tommyt654 » Mon Jan 27, 2014 11:40 am

Dirty bolt, disassemble and clean if possible. If not boil it in a pot of water and vinegar and lube afterwards.
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Re: Stiff bolt Cycle

Postby ShootnMathews » Mon Jan 27, 2014 12:53 pm

My guess is cosmoline in the chamber. Use a brush for shotgun that fits snug but not tight and chuck a small section of cleaning rod in a drill and work it in and out of the chamber for a couple dozen strokes and then clean with solvents as usual.
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Re: Stiff bolt Cycle

Postby USSR » Mon Jan 27, 2014 7:52 pm

I gotta be honest, 90% of the Mosin world always attributes this to Cosmoline and it is often the bolt camming surfaces and/or the interruptor/ejector package. Cosmoline in the chamber is just a small part to the equation.
делать это в одном кадре
1942 Izhevsk 91/30 Ex Sniper - "M9130A2" heavy barrel custom
1955. Chinese Type 53 Carbine - Resto project
1954.5 Chinese Type 53 Carbine - Resto 95% complete (Sold)
1942 Izhevsk 91/30 - Resto complete (Sold)
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Re: Stiff bolt Cycle

Postby ShootnMathews » Mon Jan 27, 2014 7:57 pm

USSR wrote:I gotta be honest, 90% of the Mosin world always attributes this to Cosmoline and it is often the bolt camming surfaces and/or the interruptor/ejector package. Cosmoline in the chamber is just a small part to the equation.

True. Cosmoline is what made mine sticky. After brushing chamber she cycles like butter. This was after polishing and working the bolt over.

In my case the bolt lifted fine but was sticky when you tried to pull it rearwards to extract the spent case. Which is how I understood his problem.
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