Re-Barrel Winchester Super Grade?

Milehi · October 18, 1999, 07:47 PM

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 · October 19, 1999, 12:11 AM

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 · October 19, 1999, 10:31 AM

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. · October 20, 1999, 12:34 PM

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.

October 18, 1999, 07:47 PM	#1
Milehi Member Join Date: September 30, 1999 Posts: 51	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"?

October 19, 1999, 12:11 AM	#2
Mossyrock Senior Member Join Date: January 1, 1999 Location: Washington State Posts: 137	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. ------------------ 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.

October 19, 1999, 10:31 AM	#3
BigG Senior Member Join Date: May 19, 1999 Location: Atlanta, GA Posts: 4,334	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. ------------------ There is the science of *Ballistics* and the Art of *Bullistics* Yankee Doodle

October 20, 1999, 12:34 PM	#4
Paul B. Senior Member Join Date: March 28, 1999 Location: Tucson, AZ Posts: 3,802	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.