Help sporterizing a Mosin Nagant (Shortening the barrel)

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Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby Malamore on Wed Mar 21, 2012 9:23 am

I'm looking to sporterize a 91/30. One of the first steps is to shorten the barrel but I don't want to spend $150 on tools for a $90 gun:

http://www.midwayusa.com/product/684575 ... ber=684575
http://www.midwayusa.com/product/464834 ... ber=464834

Anyone know I can either rent these or if someone on the board has a set that I could use?

Thanks, Aric
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Re: Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby Stradawhovious on Wed Mar 21, 2012 9:39 am

Why go through all the trouble?!?

Here is a much more readily available alternative.

Image

For shortening...

then

Image

For crowning...

Then done.




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Re: Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby Shipyard on Wed Mar 21, 2012 9:48 am

Make sure you got a healthy supply of PBR as well :D
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Re: Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby yuppiejr on Wed Mar 21, 2012 10:07 am

I watched a video on recrowning a barrel via the Brownell's website and to finish off the above process above they used a slotted/round head machine screw of the appropriate head diamater and some cutting/polishing compound chucked up in a drill to slightly recess and finish the crown. Getting the end of the barrel flat & square at a perfect 90 degree angle is probably the biggest challenge/risk involved in the above process, if you could work up some sort of temporary jig using scrap wood and PBR cans to hold the barrel and the grinder in relation to one another while you square off the freshly cut end you could probably end up with a completely respectable cut and crown job for your time investment. Lil cold blue or Krylon to finish... BAM.
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Re: Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby goett047 on Wed Mar 21, 2012 11:05 am

Cut it with a hack saw ..seriously..smooth it out, spend 12 dollars on valve lapping compound and a brass screw with a round head. Put the screw in a drill, apply lapping compound, and spin the screw over the edge of the bore. I think Potterfield has a video of this on youtube.
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Re: Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby Stradawhovious on Wed Mar 21, 2012 11:09 am

goett047 wrote:I think Potterfield has a video of this on youtube.



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Re: Help sporterizing a Mosin Nagant (Shortening the barrel)

Postby Malamore on Wed Mar 21, 2012 12:07 pm

Cool. I appreciate the tips. I'm going to do it this way. I'll post results when it's completed.
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