Re-Barrel Winchester Super Grade?

[Milehi]

I have a 300 Win Mag Super grade and am thinking of having it rebarreled to .375 and chambered to 375 H&H. Is the action long enough for the H&H and would the bolt face need to be opened? Also what would be the best finished barrel length, 22",24", or 26"?

 

[Mossyrock]

Milehi,

Sure, that conversion will work, although you will probably need a new magazine box and you might have to trim back the bolt stop a touch. I like a shorter barrel, so I would go with the 22" myself, although the 24" would be a good compromise. The .375 works well through short barrels.

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Mossyrock
I respect your right to your own opinions and beliefs
and will fight to the death to defend your right to them
regardless of how uninformed and ignorant they may be.

 

[BigG]

I'm not sure the 375 H&H would work thru that action. If I remember correctly, the 300 Win Mag was an H&H case, shortened to work thru a 30'06 length action. There were 3 model 70 Actions, Short - 308 length, Long - 30'06 length, and Magnum length, the last for the 300 and 375 H&H Magnums.

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There is the science of Ballistics and the Art of Bullistics
Yankee Doodle

 

[Paul B.]

Milehi. I think all you have to do is change the magazine box and bolt stop. In checking a .375 H&H round against the opening in the receiver, you may also have to remove metal at the rear of the receiver. It might pay you to measure the receiver opening of a factory .375 Model 70 and compare it to yours.
Paul B.