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Need some feed back 7mm REM MAG re-barrel

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Unread 05-22-2008, 03:29 PM
Platinum Member
Join Date: Jan 2008
Posts: 4,398
Need some feed back 7mm REM MAG re-barrel

Just picked up a Win M70 for a song and want to re-barrel ASAP

I was thinking 1-9 twist to shoot the heavy stuff.

But what length barrel do I get to make the most of my handloads?

I just cant make up my mind on muzzel diamiter eather?
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Unread 05-22-2008, 04:17 PM
Platinum Member
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 6,068
I'm also planning a rebarrel of a 7mm Rem Mag, Ruger M77. I'll probably go with a Lilja 26" #5 flutted.
- Mark

You will never know how much it has cost my generation to preserve your freedom. I hope you make good use of it.
~ John Quincy Adams
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Unread 05-23-2008, 09:44 AM
Silver Member
Join Date: May 2008
Location: Texas
Posts: 151
I say get a 26 in tube. If you plan on loading heavy bullets then you will want slow burning powder behind them. When you use slow burning powder a long barrel is you best friend. As for diameter that depends on the application you want to use this for. For field use I like about a .850 muzzle diameter.
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Unread 05-23-2008, 03:08 PM
Bronze Member
Join Date: Mar 2008
Location: Boise, Idaho
Posts: 71
I have included the URL to Lilja barrels contour page.

This will give you the diameter information you wanted.

My last barrel was a Montana Rifleman barrel with a 9 1/2 twist and I am very satisfied.

You will want to use a 26 inch barrel for the size of case you are shooting, provided that you stay with 7mm Rem Mag or larger.

Lilja Precision Rifle Barrels - Barrel Contour Data

Good Luck.
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Unread 06-21-2008, 11:10 PM
Junior Member
Join Date: May 2006
Posts: 9

Personally, I would go upwards of 30" in a 7mm Rem Mag if available. Most are at a bit of a price increase. Take advantage of the overbore condition and capture that extra velocity. I would go with a 1:8" twist as well to use the 180gr VLD's too.
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Unread 06-22-2008, 12:18 AM
Gold Member
Join Date: Oct 2006
Location: Oregon City, OR
Posts: 507

I personally think a 28" barrel in a Rem Sendero counture. The 1-9 will allow you to shoot the 180 VLDs.
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