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Double Rifles, Single Shots & Combinations >> Double Rifles

400NitroExpress
.400 member

Reged: 26/11/03
Posts: 1154
Loc: Lone Star State

Re: 375H&H Magnum to the new 400H&H
31/08/07 12:54 PM

Sure. Paul Roberts has sold more rebored doubles than anybody I know of. He rebored, rechambered and reproved many .400/.350 and .350 No. 2 rifles to 9.3X74R. Another common rebore is .318 Westley Richards to 9.3X62 rimless, an increase of .037". The .450 NE to .470 NE is also common, an increase of .025". Going up .036" to .411" shouldn't be a problem. Most, if not all of Paul Roberts' (J. Rigby; J. Roberts & Son) rebores were done in the US by Cliff Labounty. The special machinery he made for reboring doubles went to Jim Dubell, who is the only one in the US I know of who can do it.

The issue is remaining wall thickness, and you need to make sure you have enough. In any event, it would really need to go back to England or Europe for re-proof. I know where there's a .475 rebored from .450 that blew up recently with normal loads. It had not been re-proved. Use of monos in a rebored double would be a really bad idea.

--------------------
"Serious rifles have two barrels, everything else just burns gunpowder."

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Subject	Posted by	Posted on
375H&H Magnum to the new 400H&H	Anonymous	31/08/07 06:32 AM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	31/08/07 12:54 PM
Re: 375H&H Magnum to the new 400H&H	bonanza	01/09/07 12:49 AM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	01/09/07 02:01 AM
Re: 375H&H Magnum to the new 400H&H	bonanza	01/09/07 02:59 AM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	01/09/07 03:18 AM
Re: 375H&H Magnum to the new 400H&H	4seventy	02/09/07 06:57 PM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	05/09/07 01:09 AM
Re: 375H&H Magnum to the new 400H&H	500Nitro	02/09/07 07:05 PM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	05/09/07 01:14 AM
Re: 375H&H Magnum to the new 400H&H	Bramble	03/09/07 12:21 AM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	05/09/07 01:35 AM
Re: 375H&H Magnum to the new 400H&H	BigFiveJack	04/09/07 10:40 AM
Re: 375H&H Magnum to the new 400H&H	bonanza	04/09/07 01:07 PM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	05/09/07 01:42 AM
Re: 375H&H Magnum to the new 400H&H	bonanza	31/08/07 11:30 AM
Re: 375H&H Magnum to the new 400H&H	Anonymous	01/09/07 05:29 AM
Re: 375H&H Magnum to the new 400H&H	400NitroExpress	01/09/07 05:42 AM
Re: 375H&H Magnum to the new 400H&H	Anonymous	02/09/07 01:35 AM

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