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

If you are not satisfied

If you are not satisfied check out Iraqvetran8888 on Youtube he has a series on acurizing the Mosin.
 
Well, couldn't get away with it forever.
You did give it a good try. :)

Go shoot that thing & get back here with the results.
Denis
 
Schools are strange and alien places now- as it seems to those of us in the OFS. And, I suppose the mere mention of firearms in school is just short of a capital offense now. But, I wonder if there are other like-minded students in the circles you run with?





(OFS- Old Fart Society)
 
My friend Gunnar and Daniel love firearms. I brought a Hornady Magazine to school yesterday/today and I got some weird looks. I let my friends look at it though. And Haha at the OFS :D
 
Mosin, if I'm ever in North Carolina again (I sure miss it some days) or if you're ever in Florida, we'll have to have a Mosin shoot off. Just give me a few weeks to get mine ready :D

Interesting that you bedded the whole length of the barrel channel with cork. I was going to do the same but at a few specific pressure points. Did you have a reason for picking one method over the other?
 
That full-length corkjob was unexpected to see, interested in how it works out.

Almost surprised everything went back together again with it in place.
Denis
 
Law of conservation of mass. The scientific principle that states "what you put in, equals what comes out". My thinking was, "If I bed the entire length of the barrel, I'll be guaranteed no uneven pressure points along the channel, and I'll be guaranteed the same amount of pressure that it is put on the barrel by the cork and upper hand guard and barrel bands, all along the barrel." I think I am correct in my thinking but it should work. Also, there was a guy on the Internet that did it too.
 
I'm not sure what the law of conservation of mass has to do with bedding the barrel. It does, however apply to forces like recoil: A heavier bullet in the same load, having generally more energy at the muzzle, will also have generally more recoil from the user end. Maybe you know something I don't though.

If my understanding is correct, you would cork the barrel to allow it to flex while having a known contact pressure point so the barrel is being pushed against consistently rather than randomly. It seems you've crossed that line into a complete bedding of cork, which is interesting. I wonder how the results would play out with that versus just corking the barrel at certain intervals.

EDIT: I've re-read your post and it makes more sense now, especially considering you're still in your wood stock with the foregrip and barrel bands. I'm in an ATI Monte Carlo Stock which is almost free floated, so coming from an opposite direction from you.
 
College chemistry & physics at 14.
I personally find that disgusting.
I couldn't do either one when I was IN college.

GO SHOOT THAT RIFLE!!!!!
Denis
 
Well, technically, I am in college. It's a High School/Early College School where when you graduate you leave with an Associates degree.

AND I WILL TOMORROW! :D

(Change of plans though, I'm going to be firing Tula Grey Case ammo, mot Winchester.)

Oh and Dakota. I may be completely wrong in my use of The Law of Conservation of Mass here, but it made sense when I thought about it, so don't quote me on anything. :D
 
We'll I figured out that 2+2=4 in school?????

Lol wish I had half those smarts at your age..let us know how the shooting goes take some pics of your target.and remember concentrate on slow easy breathing and keeping your eyes open and avoiding flinching..take your time with each shot and really think about what you need to work on..but more important than all else have some fun
 
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That looks familiar...

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

Independent discovery?
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I did away with the full-length cork by Part II because it lead to barrel overheating. Cork is a really excellent insulator.

The shim I now use is as narrow as possible. On the 91/30 stock it's still cork, but on the T53 stock it's brass, which conducts heat.

The idea is to allow airflow around the barrel. You'll have less time between strings and longer strings to boot, before you start shooting in circles and have to let the barrel cool.

If you're not going to shim the action, you're going to have way too much upward pressure on the barrel, uneven pressure, greater at the receiver end of the barrel than at the muzzle end. This will stress your stock and cause all sorts of precision problems.

If the rifle doesn't shoot under 6" at 100 yards without work, chances are it's not worth the mods. The Russians had a precision standard for four rounds. It was five or six inches for the 91/30 and four inches for the snipers.

Of course, the Finns showed that proper bedding could bring it down to 2-3" on an otherwise badly shooting rifle.

In my opinion, you need to inlet it first, then shoot it, then add barrel bedding and action shims (as a set, to keep equal pressure along the barrel).

Only then move on to the more advanced stuff. But man, do the inletting first, then shoot.

The data for the article I referenced was gathered over the course of a year, and of course was not thrown together all at once.

Josh
 
To be completely honest. It wasn't an independent discovery, I got part of my info from a video on Youtube.
I haven't even shot it with the new mods so I won't know until then.
 
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