Cutting down a rifle barrel (Mosin content)

[littletommy]

So here lately, I have an over abundance of MN 91/30s, and I have picked the best candidate for sporterizing. I want to put a synthetic stock, turned down bolt, scope mounts, scope, and bi-pod on. I'm thinking I would probably want to cut a few inches off the barrel, possibly just behind the front sight. Before I look at videos on you tube, I'm sure someone here has done this, and thought I could get some good tips. My concern is mainly with the best method of cutting, (hack saw, band saw, whiz wheel) and how will this affect the rifling at the muzzle. Also, counter boring comes to mind. Should I have it done by a pro, or is it something I could do reasonably simple? I work in a fabrication shop, so I am familiar with metal work, and have access to the proper tools.

 

[mammynun]

I've never done it, but my guess is you'd need something like this:

Brownells Search : Gunsmith Tools & Supplies : Barrel Blanks & Tools : Barrel Chamfering Tool Kits - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools - BROWNELLS

 

[littletommy]

I just sent a copy of my C+R to them today, I hear they offer nice discounts.

 

[Branch]

This guy has a pretty good tutorial on how he sporterized his mosin.
I suggest you watch all the parts but here is a link to the barrel cutting.


http://www.youtube.com/watch?v=Z-y8lNlnLMM

 

[littletommy]

Thanks, I'll give that a look.

 

[MrSmitty]

C&R

I just sent a copy of my C+R to them today, I hear they offer nice discounts.

You have a C&R??? !!!!!!!!! can you be my new best friend??

 

[2cool9031]

I have cut Mosin barrels to, 16 1/2".. 17 1/2"..18"..and 20"..You can use a hacksaw, I have a metal cutting band saw. I usually face them square at work and give them a 11 degree crown. But I have done a couple at home, filed them square and used a piece of scotch brite pad on the end of a phillips screwdriver in my hand drill. It is important not to leave any burrs on the inside of the rifling.

 

[mammynun]

I have cut Mosin barrels to, 16 1/2".. 17 1/2"..18"..and 20"..You can use a hacksaw, I have a metal cutting band saw. I usually face them square at work and give them a 11 degree crown. But I have done a couple at home, filed them square and used a piece of scotch brite pad on the end of a phillips screwdriver in my hand drill. It is important not to leave any burrs on the inside of the rifling.

How are you "bending" your bolts?

 

[2cool9031]

How are you "bending" your bolts?

I machine a new bolt handle. It starts out as a piece of 1" round stock. I turn the body,leaving the head, and thread the end 3/8-16.
Then I mill the head and drill and countersink for 8-32 cap heads.
The old bolt handle is sawed off and a .060 slot is cut in the bolt body and then it is drilled and tapped for the 8-32. Then I bend the handle. The ball on the end is purchased from McMaster-Carr it is already polished and drilled and tapped.

 

[mammynun]

As I suspected... above my skill set.

I was hoping for something like "I made a jig that the bolt clamps in and then I run over it with a truck." I could do that.

 

[2cool9031]

As I suspected... above my skill set.

I was hoping for something like "I made a jig that the bolt clamps in and then I run over it with a truck." I could do that.

Yeah, I usually go into work an hour early to do my thing.
I did make a fixture for drilling and tapping a receiver for an ATI scope mount. I haven't done a rifle with it yet. I also made one for drilling and tapping the end of a cut down barrel for a new sight. I started working on a new idea.