Converting Ruger M77 MkII from Standard Long Action to Magnum?

jasonprox700

Well-Known Member
Joined
Jan 17, 2007
Messages
261
Location
Black River Falls, WI
I currently have a Ruger M77 Mark II chambered in .280. Is it possible to convert this over to a .338 WM? The reason for this is I like the gun, but I would rather have a .280 AI in a Rem 700 than in my Ruger. I want a .338 that is comfortable to carry, and this gun fits the bill.

Besides opening up the face of the bolt, what other mods would have to be made?
 

cornstalker

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Joined
Aug 13, 2008
Messages
354
Location
Colorado
I don't know for sure, but I think the action length is the same. I have two short actions and a .338 WM, so I don't have a standard long action to compare with.

I think the only mods are opening the bolt face and add a muzzle brake on the new barrel...:)

I'd be happy to measure the mag box, ejection port, or anything else that I can on my .338 for you for comparison's sake.

You could try PM'ing Coyboy too. He seems to know them pretty well.
 

ForneyRider

Well-Known Member
Joined
Jan 6, 2010
Messages
99
338 Win Mag and Rem 7mm Mag each have a 2.5in case and I load the 7mm out to about the same length as 270 Win, ~3.30in.
 

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