Hi, all.

All I handled & had are M16's & AR15's.  I just got a Finnish M39, which is my first bolt action rifle.  I found it is quite hard to turn the bolt lever to cock the firing pin.  Do all bolt action rifles hard to cock the firing pin like this?  I wonder if this brutal spring strengh is required to hit the primers?

Is there an aftermarking firing pin softer spring?  I doubt there would be any?

Also, the bolt & receiver's camming surfaces seem to scrub each other too much?  You know bolt's camming surface is shaving the receiver's camming surface material a little by little?


Thanks,

Matt

Welcome to Mosins....they cock on opening and make it a little harder to open the bolt. the head spacing could be too tight. Polish it up some and oil it a little, it sounds normal to me.....

Well, thanks for the comments!

While I was running some Google seaches, I found someone mentioned about "Mosin-Nagant muscle".
Now I understand the term and I believe I have developed my M-N muscle after practicing cycling bolt for a week.

My M39 was very clean from the beginning and there wasn't anything to clean.  The importer cleaned the whole rifle pretty much.

There's a shorten the firing pin spring mod on the surplusrifle site.  If you get too carried away you might have to buy a spring.

Dennis Jenkins

Quoted: Hi, all. All I handled & had are M16's & AR15's.  I just got a Finnish M39, which is my first bolt action rifle.  I found it is quite hard to turn the bolt lever to cock the firing pin.  Do all bolt action rifles hard to cock the firing pin like this?  I wonder if this brutal spring strengh is required to hit the primers? Is there an aftermarking firing pin softer spring?  I doubt there would be any? Also, the bolt & receiver's camming surfaces seem to scrub each other too much?  You know bolt's camming surface is shaving the receiver's camming surface material a little by little? Thanks, Matt