Should you bed your mosin?

D

derr12

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I got a reproduction sniper mosin last year. Put in the trigger from ppsh and the shims. It shot only ok, 5 inch groups. Finally got to bedding it in epoxy and took out the cork and free floated the barrel. My scope mount needs zeroing cuz it's way out now, but was getting 2.5 inches with cheap chicom ammo. At least half an inch of that was the shooter.

I had wondered if the process was simply polishing a turd, but in my case I can say it's a worthwhile endeavor.

Highly recommended it. Wonder how it will shoot with ammo that doesnt suck?
 
A mosin in the issue stock doesn't need bedding. The plastic stocks people put on them need bedding to shoot as well as the simple military stock with its steel recoil bolt and two simple bedding ledges.

Fwiw.
 
Claven2 said:
A mosin in the issue stock doesn't need bedding. The plastic stocks people put on them need bedding to shoot as well as the simple military stock with its steel recoil bolt and two simple bedding ledges.

Fwiw.
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I can't say I'd agree with this. My experiences have shown bedding usually helps quite a bit. I have had good luck with the standard Mosin stock and the BadAce accurizing kit though which is shims and cork. I bedded my Mosin in a Boyd's laminate stock and recrowned it. I have a few targets where I shot 1/2 MOA.
 
MuthaFunk said:
I can't say I'd agree with this. My experiences have shown bedding usually helps quite a bit. I have had good luck with the standard Mosin stock and the BadAce accurizing kit though which is shims and cork. I bedded my Mosin in a Boyd's laminate stock and recrowned it. I have a few targets where I shot 1/2 MOA.
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Recrowning a muzzle and bedding a barrel are two entirely different things. If it needed a new crown it would have shot like crap to begin with, and Yes, it would greatly have improved your accuracy whether bedded or not.
 
A proper bedding job can never hurt. After owning and doing many trigger jobs on Mosins I would add pillars too on the original stocks.
Pillars would act as shims and prevent any stock crush. Some of those stocks are softer than others.

The thing that needs addressing is the long skinny barrels on Mosins. If the bore is is good, it most certainly needs a recrowning. Most muzzles I've seen have been abused.
The Finns shortened, made heavier barrels with slightly tighter bores for increase accuracy and free floated the barrel with a pressure point at the front of the handguard. They have several models which proved that.

Mosin actions are actually very well made and can be made to shoot well. I've seen some youtubes where they have turned them into long range target machines with custom stocks, bull barrels and can hang with the Remingtons if you want to spend the money.

If I get the time I plan on making a Mosin sniper with modern parts and a donor action for fun. The Rock Solid Mount looks good to me.
 
EHG said:
A proper bedding job can never hurt. After owning and doing many trigger jobs on Mosins I would add pillars too on the original stocks.
Pillars would act as shims and prevent any stock crush. Some of those stocks are softer than others.

The thing that needs addressing is the long skinny barrels on Mosins. If the bore is is good, it most certainly needs a recrowning. Most muzzles I've seen have been abused.
The Finns shortened, made heavier barrels with slightly tighter bores for increase accuracy and free floated the barrel with a pressure point at the front of the handguard. They have several models which proved that.

Mosin actions are actually very well made and can be made to shoot well. I've seen some youtubes where they have turned them into long range target machines with custom stocks, bull barrels and can hang with the Remingtons if you want to spend the money.

If I get the time I plan on making a Mosin sniper with modern parts and a donor action for fun. The Rock Solid Mount looks good to me.
Click to expand...

I keep waiting for a butchered mosin with a perfect bore to build a nice hunting rifle on. Haven't found one recently though :(
 
The attached Soviet illustration of proper "bedding" has been widely circulated. If you make an effort to translate it appears to indicate the barrel reinforce (blue) is to be in contact with the wood (as with most types of milsurps) and that the shim at the front of the receiver flat is primarily to avoid stressing (bending) the action when tightening the screws. It is more challenging to attempt to bed that reinforce while at the same time getting good contact under the action and getting the barrel to float for most of its length. I may be mistaken but I believe most or all of my Finn rifles do not have the contact under the reinforce. The Finns seemed to use the shims at the tang and front receiver flat as a quick and dirty way of floating a barrel with a minimum of effort (they were at war when many of these guns were built or refurbished, after all). I have a refurb upgraded Dragoon that I have played with extensively- only a fair bore but I thought it would be a challenge to try and "accurize". Much to my dismay it shot very nice 2 inch groups as I got it which was with barrel sitting hard on the wood for most of the barrel channel. I then tried Finn-like shimming and barrel wrapping but couldn't get it to improve (in fact it got worse) until I firmly bedded the reinforce (with glued in wood veneer) and fully floated the barrel to the muzzle. It now shows signs of wanting to shoot MOA or better which is, unfortunately, better than I can shoot without a scope. So I agree with Claven2- it's possible to get max accuracy out of a Mosin 91/30 with the original military bedding. I'm also a bit skeptical about the internet myth of ubiquitous Finn accuracy. If it were true then I'm personally unlucky enough to have the worlds only inaccurate M27 and M39. Both have pristine bores and excellent triggers and shoot horribly.

milsurpo
 
Yup I'd only cork and shim a legit sniper. Mine has a good bore and crown. The cork and shims helped a bit, but I knew it could shoot better than it was. Next time I hit the range I'm gonna bring my cork and experiment wit it's placement to see if it helps even more. If I can get 2-2.5 inches wit crap ammo tho, I consider that a win.
 
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