Need some help with my K31 bolt.

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bonan

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I just got my baby k31 recently. Dream came true! lol
This thing built like a tank! I handle mauser, Mosin, Lee, but K31 is the beefiest rifle I know.
however I found this thing is not exactly what I dream about. The bolt is stiff. If I pull the bolt slowly, it is not opening. I need to to pull it back, then slam it to stopper.

There is a couple I noticed,
when the bolt is rotating. a lot force is needed to make it rotate, but it still quite stiff
when the bolt rotating finished, this is point where I need to slam it. It's kind of like something blocking bolt. After I put back bolt, when the bolt just right before the bolt start rotating, I can hear "click!" sound, it is quite loud.

I need some help with it. I really appreciate any helps here.
 
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Bolt:
Rub in a thin layer of grease on exterior of bolt and on the stud on the operating rod.

Looks like there was a name plate on the buttstock. Are there two nail holes or screw hole?
 
Remember there is no primary extraction with the K31 bolt design. On the vast majority of bolt rifles there is a cam on the bolt handle and it helps get things going. On a K31 you just kinda' give it a mighty heave back.
I find it helps to work the bolt smartly while sort of snapping your wrist. You'll get it with a little practice.
 
In my experience with the swiss rifles, they take a considerable amount of force to pull the bolt back. Try to find some good grease for it. Look for some waffenfett or automatenfett which was used on the rifles back in the day.
 
In my experience of shooting Swiss long arms, since my early teens in the 1960's, they simply require a little more effort to open than a conventional turn-bolt action. To say that a considerable amount of force is needed implies that they are difficult to operate. This does not explain how Diopter's young daughter, as well as many youngsters aged from eight years on over here in UK can successfully shoot them without pulling their little arms out of the sockets with effort.

I'd respectfully suggest that you have a revision of the way that your cleaning/lube régime operates. After that initial tug to get over the extraction of the case, the bolt should move backwards like greased weasel snot. All of mine do.

tac
 
tacfoley said:
In my experience of shooting Swiss long arms, since my early teens in the 1960's, they simply require a little more effort to open than a conventional turn-bolt action. To say that a considerable amount of force is needed implies that they are difficult to operate. This does not explain how Diopter's young daughter, as well as many youngsters aged from eight years on over here in UK can successfully shoot them without pulling their little arms out of the sockets with effort.

I'd respectfully suggest that you have a revision of the way that your cleaning/lube régime operates. After that initial tug to get over the extraction of the case, the bolt should move backwards like greased weasel snot. All of mine do.

tac
Click to expand...

Well when I say considerable amount of force I'm comparing it to say an enfield or a Mauser action. It isn't hard but just takes a little more strength to do. And it makes sense that it would need some more strength to operate because it's performing two tasks at the same time in one movement when the traditional bolt action takes two movements.
 
Any synthetic grease will do.
A moly grease is slickest I've tried so far, like Automatenfett.There are local choices of grease
 
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Hey guys I think the problem is solved. Thanks for all the input. I put some cheap grease on it then I went to range today and I found quite strange fact. When there is cartridge in chamber, it became smoother and fast. I didnt recall any stiff feeling on my k31 as I dryfire it. Quite happy right now because I can shoot 2inches with iron sight! I have shot mosin and sks with iron sight but they are all over so I thought it is impossible to shoot well with iron sight and my thick glasses.
 
Another thing, this k31 trigger is leather weight light. It is much lighter than savage accutrigger with lightest setting, it is lighter than mosin Timmy trigger. At first It make me believe Swiss k31 trigger is one stage trigger with a freaking long creep. This k31 trigger pull weight is like half of 1954 k31's trigger. The weight difference is small between stage one and two, maybe about 50% heavier. I need to make sure sight picture is dead on then I start pull stage one. I pull my finger slow and slow and slow until I feel "dah". This one is the lightest trigger I tried in my life. It is good for precision shooting but it make me a little bitcuncomfortable to shoot, even it passed my safety-check drop test.
 
Best bet is to get used to the long trigger take up(first stage).
I've been using them for so long that I take up the 1st stage trigger slack, then start final aiming.
Dryfire until you get use to it.
 
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