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regarding weatherby...what is "freebore"?

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Old 04-14-2002, 09:59 PM
Bronze Member
Join Date: Apr 2002
Location: Pennsylvania
Posts: 82
regarding weatherby...what is "freebore"?

what is freebore in the weatherby rifle? what is it's purpose? effect accuracy?
I am looking into a 340 weatherby alaskan. are they accurate?
300 RUM and a 458 win mag...what more can a man want!
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Old 04-14-2002, 10:49 PM
Platinum Member
Join Date: May 2001
Location: Pennsylvania
Posts: 1,757
Re: regarding weatherby...what is "freebore"?


Freebore in the Weatherby Factory rifle gives the bullet a longer distance before it contacts the rifling. The bullet acually jumps to the rifling. Benchrest shooters long ago found that a rifle is much more accurate when the bullet starts out just touching the lands of the rifling or not more then .010" to .015" inch from the lands.
Most Weatherby rifles you cant touch the rifling even if you just barely seated the bullet in the neck 1/8".

It was devised to give a little bit more velocity but, at the expense of accuracy.

Most Weatherby factory rifles do not hold very good accuracy as compared to standard "Normal" chamberings.

You could have a good gunsmith chamber a 340 Weatherby without freebore on a custom barrel and it would be a much more accurate rifle in most every case.

Darryl Cassel

[ 04-14-2002: Message edited by: Darryl Cassel ]
Darryl Cassel
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Old 04-15-2002, 09:37 AM
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Join Date: May 2001
Posts: 2,369
Re: regarding weatherby...what is "freebore"?

Dr John

Welcome to Long Range Hunting!

I see you got an admonishment on a 400 yard moose rifle on another board, that probably won't happen here.

Welcome, Have Fun and Be Safe.
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Old 04-16-2002, 11:17 PM
Silver Member
Join Date: Apr 2002
Location: Loon Lake WA
Posts: 362
Re: regarding weatherby...what is "freebore"?

Dr. John, I think Mr. Cassul might have forgot to tell you that NEVER use loads developed in a freebore rifle in another gun that isn't freebored. Extreme pressures will result. littletoes.
Portate bien o te lleva el cucuy
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