Bedding the Stock and Shimming the Action on a Mosin Nagant M91/30

The Results Are In!

So, after about 15 minutes if shooting 10 rounds through my improved Mosin Nagant, There was a huge margin of improvement. The targets are below.

First 5, Tula Ammo 147 grain Service loads. Circled these in blue. I cannot say enough how great this ammo is. Absolutely amazing. Also, the shot in the duct tape was my first shot, I attributed that to the surface rust my barrel had on the inside.


Next, we have 147 grain Surplus Service Loads. I circled these in Red. 4 on paper, one flyer, I'm attributing that one to shooter error, I flinched a little because my dog almost got in the way.
 
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Finally! :)

What distance & why would you be contributing, rather than attributing?
(Fair game to take a funpoke at a NASA scientist every now & then.)
Denis
 
I shot these at 45-50 yards. I'm proud of them because (with the exception of 3) all hit reliably in a good group (for my shootings kills I guess it's a good group. )

And don't you know NASA's Auto correct is awful?
 
I put a piece of cork where the tang screw goes and one piece over the recoil lug. So I guess I did, not sure what part is the receiver, as I've heard people call the back of the bolt the receiver, so I'm not too sure.
 
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I put a piece of cork where the tang screw goes and one piece over the recoil lug. So I guess I did, not sure what part is the receiver, as I've heard people call the back of the bolt the receiver, so I'm not too sure.
Click to expand...

1.jpg

Barrel channel and chamber/barrel shank cork bedded

2.jpg

Tang

3.jpg

In front of recoil lug

http://www.smith-sights.com/article-accurizing-mosin-nagant.php

You will also want something on the front of the recoil lug face. It's very important that you make firm contact at that location. If you don't, the screws can come loose, the stock won't contact at the same time, and depending on the severity, the stock can crack (though I've never personally seen this on a Mosin, I've heard of it happening.)

I highly recommend you duplicate here:

http://www.smith-sights.com/accurizing-the-mosin-nagant-a-year-later.php

That is after another year of study into Finnish methods as well as practical study.

Regards,

Josh
 
Mosin-Marauder said:
I shot these at 45-50 yards. I'm proud of them because (with the exception of 3) all hit reliably in a good group (for my shootings kills I guess it's a good group. )

And don't you know NASA's Auto correct is awful?
Click to expand...

Try taking the upper handguard off. You may see further improvement. Heaven knows how much time I spent on monkeying with my mosin. I finally nailed it down to better than 2 moa out 100 yards.

-TL
 
Looks like you're improving your flinch?
Keeping your eyes open?

The receiver is the rifle's frame, into & upon which the major metal pieces like the barrel, triggerguard assembly & bolt attach.

No part of the bolt is a receiver.

And I'd contribute toward firing that NASA autocorrect, since we obviously can't attribute anything reliable to it....
Denis
 
Yes, I'm working on it. These shots today were in part a result of my efforts. I did flinch a bit, which caused me to miss that one that went high. But other than that I'm doing pretty well.
 
But other than that I'm doing pretty well.
Click to expand...
That you are young sir.

What, in your study of this, lead you away from a hard bedding product such as Acraglass, Marinetex, Devcon, etc. for the receiver area?
 
Well, to put it kinda shortly- those products are basically 2-part epoxies that set up really really hard and prevent any and all movement of the receiver (action) in the stock. It's always been my line of thought that the receiver (all the metal part that wraps around the bolt) should be kept as immobile and solidly seated in the stock as possible.

This isn't how I prefer to do it exactly, but in short order- it gives a pretty good description I believe: http://www.youtube.com/watch?v=VFeDm7DMgzo
 
10-96,

A bit off topic, but have you seen those bench rifles that bed the barrel completely and float the action?

It's kind of a cool concept. I don't know that it's any better, but some claim it is.

Regards,

Josh
 
Mosin,
Those are bedding compounds traditionally used to create an inflexible "platform" between the wood of the stock and the steel of the action and/or action & barrel.

Think of a hard-setting putty.
Fills in space in key areas, immobilizes the action/barrel, sorta serves the same purpose as your cork, but doesn't compress over time & can't absorb moisture, resists warping from weather changes in temps & humidity

Establishes a much harder foundation than the typical wood stock.
Denis
 
Josh- No, I haven't heard of that, and I gotta admit that I haven't heard of doing it the way Mosin Marauder did it either- but it does sound intriguing and worth looking into.
 
Got some winchester White box 7.62x54R 180 grain soft points. They are boxer primed so once I shoot a group I will upload it and reload them, once I get a Lee Loader Kit. Also, should I shoot 5 or 3 shot groups?
 
3-shot groups for accuracy testing are adequate for most purposes.
A 5-shot group can give you a better idea.

I do all of my rifle testing in centerfire calibers with 3-shot groups nowdays.

Really up to you.
Denis
 
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