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378 or 460 Weatherby in a Remington 700?

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Unread 08-05-2008, 10:48 AM
Bronze Member
Join Date: Feb 2008
Posts: 65
378 or 460 Weatherby in a Remington 700?

Has anyone built a .378 or .460 Weatherby on the Remington 700 action? The bolt face and body of the case (sans belt) are smaller than the .338 Lapua so it seems do-able.

Looking to mess around with these to get rid of the fascination before I get too old to shoot them. You know how it goes, got a box of ammo now I need something to shoot it in!
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Unread 08-05-2008, 02:30 PM
Platinum Member
Join Date: Jul 2004
Location: Texas
Posts: 7,189
Harry C

In order to open the bolt face enough to fit ether the Lapua or
the 378 case you will have to remove .050" from the bolt face
leaving a very thin ring and you would have to install a sako or
M16 extractor.

I would recomend the RUM (no bolt work) and about the same
power as the lapua if you want to use the Remingtion action.

A weatherby MK 5 or a custom action if your going to the large rim
Dia. cases like the 378,416 and 460 weatherby because of bolt Dia
and the extractors can be changed very easy.

The Remingtion is strong enough but with the extra cost to machine
and change extractors Most Gun Smiths will recomend a lager action
for this class of cartriges.


Last edited by J E Custom; 08-21-2008 at 11:18 AM. Reason: Grammar
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