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BELTFED
.224 member

Reged: 16/07/10
Posts: 5
Loc: Ga. U.S.A.

Ruger No.1 rechambering question
#164743 - 22/07/10 03:47 PM

I have a Ruger No.1 in 458 Win Mag. and wanted to know if it was possible to rechamber it to 450 N.E. 3 1/4 inch? I think the bore diameter is .458 for both cartridges but I don't know the twist rate for either one. I think the extractor would have to be changed from a rimless to a rimmed. What do y'all think? Can this be done? Thanks

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All Of The Big Guns Are In The Navy!

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alexbeer
.333 member

Reged: 10/04/08
Posts: 389
Loc: Tasmania, Australia

Re: Ruger No.1 rechambering question [Re: BELTFED]
#164746 - 22/07/10 05:43 PM

Hello BELTFED and welcome aboard.

It certainly is possible to re-chamber a No.1 from 458 to 450 NE 3-1/4". Nice conversion. I have done a few of them, own and use one of them myself.

One thing to watch is the size of the 458 chamber. The last one I had I refused to re-chamber the original barrel. The belt recess was grossly oversize and the 450 reamer would not have cleaned it up by almost 10 thou. The body of the 458 chamber would have only just cleaned up too. The end result probably would have worked OK, but it would have looked shocking, hence the refusal. Had to re-barrel that one.

One other thing, you might need to look at modifying or replacing the safety slide though, when ejecting, those long 3-1/4" shells love to hang up on the standard Ruger safety.

That aside, if your chamber measures up OK, go for it.

Once again, welcome.

Best

ALEX

alexbeer.com

--------------------

Details matter!

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bonanza
.400 member

Reged: 17/05/04
Posts: 2335
Loc: South Carolina

Re: Ruger No.1 rechambering question [Re: BELTFED]
#164754 - 22/07/10 10:24 PM

What year model is you .458? The older ones (1970,s) were much better made and have distinct collectors value.

--------------------

"Speak Precisely" G. Gordon Liddy.

"Life is absurd, chaotic and we must define its purpose with our actions" Abert Camus

"I''m the dude playing a dude disguised as another dude."

"Yo! Mr. White"

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fallingblock
.224 member

Reged: 16/06/05
Posts: 32
Loc: Western Wisc.

Re: Ruger No.1 rechambering question [Re: bonanza]
#164775 - 23/07/10 09:29 AM

I had my .458 re chambered to the .460 G&A #2 which is almost the same as the .500/.450 Magnum works great and is very accurate but the recoil with the 500 grain bullets is a bit much from a rest. I don't have the figures handy as they were lost in an old computer but the velocity was half way between the .460 Weatherby and the .458 Winchester at about 2150fps.
The load I use is 87 grains of IMR 4064.
Cheers,
Laurie

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bonanza
.400 member

Reged: 17/05/04
Posts: 2335
Loc: South Carolina

Re: Ruger No.1 rechambering question [Re: fallingblock]
#164785 - 23/07/10 12:47 PM

My .458 WM is all I can take, but I hear it's not too difficult to re-chamber for the .458 Lott.

--------------------

"Speak Precisely" G. Gordon Liddy.

"Life is absurd, chaotic and we must define its purpose with our actions" Abert Camus

"I''m the dude playing a dude disguised as another dude."

"Yo! Mr. White"

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nitro450exp
.333 member

Reged: 06/09/07
Posts: 254
Loc: Michigan, USA

Re: Ruger No.1 rechambering question [Re: bonanza]
#164808 - 23/07/10 10:43 PM

Beltfed.

Did mine a few years ago.
Love it one of my favourites to shoot.
Try the Hornady .458 FTX bullits.
Also reduced loads with 5744 are fun for plinking.

Nitro

--------------------
"Man is a predator or at least those of us that kill and eat our own meat are. The rest are scavengers, eating what others kill for them." Hugh Randall

45/70 DR / 12ga Paradox
470 NE DR
12 Bore DR
20 Bore DR
450 NE SR
577 NE SR

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bonanza
.400 member

Reged: 17/05/04
Posts: 2335
Loc: South Carolina

Re: Ruger No.1 rechambering question [Re: nitro450exp]
#164809 - 23/07/10 10:51 PM

Nitro 450 Exp,

"Man is a predator or at least those of us that kill and eat our own meat are. The rest are scavengers, eating what others kill for them." Hugh Randall

Oooohhhh, that quote is so wicked. Tell a gun-hating, fillet-loving liberal he is nothing more than a scavenger and watch him try to worm out of that.

--------------------

"Speak Precisely" G. Gordon Liddy.

"Life is absurd, chaotic and we must define its purpose with our actions" Abert Camus

"I''m the dude playing a dude disguised as another dude."

"Yo! Mr. White"

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BELTFED
.224 member

Reged: 16/07/10
Posts: 5
Loc: Ga. U.S.A.

Re: Ruger No.1 rechambering question [Re: bonanza]
#164818 - 24/07/10 12:47 AM

Thanks for all of your replies and the warm welcome! My No.1 was made in the early 90's it is not a Pre Warning model so I dont think it is collectable. I was wondering about the twist rate for each cartridge, are they the same? I think I read somewhere that ruger used a 1/14 twist in the 458 Win. Mag. but I could be wrong, does anyone know? Also, who would be a good gunsmith in the U.S.A. to do this work? Would I have to change extractors? I would think so but not sure. Thanks!

--------------------
All Of The Big Guns Are In The Navy!

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Tatume
.400 member

Reged: 09/06/07
Posts: 1091
Loc: Gloucester, Va USA

Re: Ruger No.1 rechambering question [Re: BELTFED]
#164821 - 24/07/10 01:30 AM

You can easily determine the twist rate of your rifle. Start a tight-fitting patch into the bore. Mark the cleaning rod at the breech, and make a mark on one side of the rod, near the handle. Push the rod into the bore and watch the mark near the handle. When it has made one complete revolution, stop and mark the rod again at the breech. Withdraw the rod and measure the distance between the two breech marks.

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Take care, Tom
NRA Life Member

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nitro450exp
.333 member

Reged: 06/09/07
Posts: 254
Loc: Michigan, USA

Re: Ruger No.1 rechambering question [Re: Tatume]
#164835 - 24/07/10 04:26 AM

Hello again,

Can't remember the twist it was either 1:10 or 1:14
Mine shoots 300 garin pistol bullits, all the way up to 500 woodlieghs no problem

I have a local smith who made one of these for himself and has done atleast 3 others including mine.
If you cannot find someone local who has the chamber reamer and who can do the work PM me.
The extractor can be reworked.

Thanks
Nitro

Bonanza,

I loved it too that is why I added it to my sig line, just wish I had come up with it.

Cheers

--------------------
"Man is a predator or at least those of us that kill and eat our own meat are. The rest are scavengers, eating what others kill for them." Hugh Randall

45/70 DR / 12ga Paradox
470 NE DR
12 Bore DR
20 Bore DR
450 NE SR
577 NE SR

Post Extras:

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