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Posted: 8/31/2013 12:39:15 PM EDT
| I started having a problem opening the bolt on my MN. The bolt opens half way from the closed position and won't go any further. In order for me to open it, I have to pull back on the cocking knob/safety. Any idea what all of a sudden could have gone wrong? |
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First thing I would do is disassemble the bolt and see if anything is wrong. Unassembled and reassembled the bolt. It worked once and that's it. Quoted:
Check your firing pin and make sure it's not bent. do a very thorough cleanup of the chamber, you may have cosmo residue causing the bolt to "stick". The cosmo was cleaned thoroughly everywhere. This is not a sticky bolt situation which I did have before when I took the rifle to the range the first time. I will check the firing pin and replace it from my 2nd Mosin. Quoted:
Lube the cocking cam surfaces, use grease. Will white lithium do? Quoted:
make sure the screw that holds the gun to the stock is all the way in if it backs out it will block the bolt Don't ask how long it took me to figure that out LOL Too ticked off to deal with this tonight; I will try all the suggestions tomorrow morning. |
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For grease, good gun grease if you have it, or if you are cheap like me, use some synthetic wheel bearing grease from the auto parts store. I've been running it in everything for about 5 years now, and I still have like 3/4 of the container left! Matt Waffenfett or Automatenfett are my personal favorites. |
| So the problem was a lack of lubricant on the bolt's 2 cam surfaces (I think that's what they are called). I put a drop of CLP on both areas and the bolt started working flawlessly. So these areas really need to greased? Which other bolt areas require to be greased regularly? |
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Quoted:
So the problem was a lack of lubricant on the bolt's 2 cam surfaces (I think that's what they are called). I put a drop of CLP on both areas and the bolt started working flawlessly. So these areas really need to greased? Which other bolt areas require to be greased regularly? On my bolt actions, the entire bolt and its components get grease. I save oil for parts that rotate about an axial pin, e.g. trigger components, as well as any hard-to-reach places. Hell, I use Magnalube grease for just about everything firearm-related, unless I'm feeling lazy, then the G96 in a spray can looks really appealing. |
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Quoted:
On my bolt actions, the entire bolt and its components get grease. I save oil for parts that rotate about an axial pin, e.g. trigger components, as well as any hard-to-reach places. Hell, I use Magnalube grease for just about everything firearm-related, unless I'm feeling lazy, then the G96 in a spray can looks really appealing. Quoted:
Quoted:
So the problem was a lack of lubricant on the bolt's 2 cam surfaces (I think that's what they are called). I put a drop of CLP on both areas and the bolt started working flawlessly. So these areas really need to greased? Which other bolt areas require to be greased regularly? On my bolt actions, the entire bolt and its components get grease. I save oil for parts that rotate about an axial pin, e.g. trigger components, as well as any hard-to-reach places. Hell, I use Magnalube grease for just about everything firearm-related, unless I'm feeling lazy, then the G96 in a spray can looks really appealing. Be careful in cold weather with too much grease inside the bolt. It could cause light primer strikes if it gets too thick from the cold. |
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