Has anyone ever created a .470 Nitro #1? Just curious . . .

Sure, lots of folks have.
Write-up can be found in _HandLoader_.

More of us have just rechambered a .458 Lott or WinMag to 450 NE 3-1/14" Thin Rim. I had one of those done because it is just a rechamber and a little work on the ejector and reshaping of the tang safety button to clear the rims on loading and ejecting. Very good and easy conversion.

Doing the 470 NE requires a rebarrel of course. You could load that to traditional 470 NE ballistics or hot it up to 470 Mbogo with the same loads used in the 470 Mbogo.

Case capacity of the NE and Mbogo 470's is nearly identical.

I'll have to check out Handloader.

Is a 450 Nitro 3-1/4" basically the same, ballistically, as a Lott?

Thanks RIP

quote:

Originally posted by Teat Hound:
I'll have to check out Handloader.

Is a 450 Nitro 3-1/4" basically the same, ballistically, as a Lott?

Thanks RIP

It's a bigger case and completely cleans up the .458 Lott chamber (diameter wise, without being a risk to the quarter rib pinning and screwing holes in the barrel top side) and is .450" longer than the Lott. It is a straight walled case that tapers gracefully, no bottle neck, and it is the original Nitro Express that started it all, thank you John Rigby, 1898.

Classic ballistics could be hotted up to best the 458 Lott with it, using the strong Ruger No.1 action and good brass.

470 NE: Joseph Lang and John Rigby 1900?

I have a 500 N.E. 3" done in a stainless #1.

Smallfry, Who did your 500 NE? I understand SSK will do the #1 up to 577NE. R.

quote:

RIP: It's a bigger case and completely cleans up the .458 Lott chamber (diameter wise, without being a risk to the quarter rib pinning and screwing holes in the barrel top side)

Ron, would a 450 #2 chamber reamer cut into the quarter rib screw holes?

Gary Reeder builds lots of 470 Nitro's on the #1. It is a popular choice too. reedercustomguns.com

Gary Reeder Custom Guns in Flagstaff will build you one. He built my #1 in 9,3x74R.

http://www.reedercustomguns.com/custom_rifles/beast.htm

quote:

Originally posted by fla3006:

quote:

RIP: It's a bigger case and completely cleans up the .458 Lott chamber (diameter wise, without being a risk to the quarter rib pinning and screwing holes in the barrel top side)

Ron, would a 450 #2 chamber reamer cut into the quarter rib screw holes?

I'm not sure about this, but if a .470 won't cut into the screw holes, then I'm sure a .450#2 won't, as the .450#2 is just a tinny bit smaller in dia then the .500 base dia. of the .470.
I think the .500 base of the .470 is (.580)--and the .450#2 base is (.564)

Rodney, my 500 was done by Lonnie Tompson who is now retierd. The barrel is a pac-nor. I had mine done with a 22" and is pretty light, which is how I like it. Its a great set up. Any of the nitro(s) upto 500 are great in the number one. @ 2150-2200 its a true 200 yard rifle .

quote:

Originally posted by walksfar:

quote:

Originally posted by fla3006:

quote:

RIP: It's a bigger case and completely cleans up the .458 Lott chamber (diameter wise, without being a risk to the quarter rib pinning and screwing holes in the barrel top side)

Ron, would a 450 #2 chamber reamer cut into the quarter rib screw holes?

I'm not sure about this, but if a .470 won't cut into the screw holes, then I'm sure a .450#2 won't, as the .450#2 is just a tinny bit smaller in dia then the .500 base dia. of the .470.
I think the .500 base of the .470 is (.580)--and the .450#2 base is (.564)

walksfar,
The question is directed at simple rechamber of a .458 Ruger No.1 with the factory pre-drilled holes for screws and pins that anchor the quarter rib to the top of the barrel.

The depth of the factory holes can vary with whether it was Monday morning or Friday afternoon at the factory, as opposed to the times between that in the work week.

Using 470's and 500's as a reference is not valid as these are custom rebarrels, where the skillful gunsmith will carefully control the depth of the holes to a minimum of only three or 4 full threads gripping each screw, and similar pin depth, and maybe a greater diameter shank/Knoxform on that custom barrel too.

fla3006,
.458 WinMag&Lott: belt .532", base .513"
450 NE 3-1/4" base = .545"
450 No.2 NE base = .564"
470 NE and 500 NE = .573" or .574"
460WbyMag: belt .604", base .582"

I would be happiest with sticking to the 450 NE 3-1/4" for a simple rechamber, but rebarrel with a custom barrel for the 450 No.2 NE.

Of course the Ruger No.1 has been built as big as .577 NE 3".

That requires just a bit more work on the safety button and ejector, and maybe reshaping the "feed ramp."

Post # 10,000: A New Era begins.

happy 10000 rip

I had one built by Hamilton Bowen when he was still doing rifle projects a few years ago. Labounty did the reboring on the barrel. From the outside, everything stayed the same....barrel, quarter rib, scope mounts, etc. I added a reducer in the stock, and a kick-eeze recoil pad, and also had Hamilton recess the safety button so it wouldn't interfere with ejection.

It shoots excellent. I handload to about 2400 fps with a 500 grain

O.K.,
If throwing in the re-bore, then walksfar's comparison is valid.

Then it becomes a case of measuring the depth of the pin and screw holes on a gun-by-gun basis and deciding how thin over the chamber wall you want to go.

I think it is best to get a new barrel and re-install the fixtures with minimum hole depths over the chamber.

I have never gotten up the gumption to wait on a re-bore job anyway.

Yes, hehe, I understand about the rebarrel for the .470, and vice versa. I feel stupid now, honestly, I think I was half asleep when posting that. Either that, or I'm having brain lapses.

I believe it was Bowen of Pistol fame that did one in the early 1990's. Article may be available from Handloader or Rifle. I think the work was comissioned by Ross Seyfried (sp?), but my memory may be off. It was a pretty good review. The base rifle was a 458 Win Mag, and the conversion also involved milling the Safety on the tang to allow the rimmed 470 case to eject fully and properly. Prior to milling the safety must have caused the case to hang up or eject unreliably on ejection.

Clint

Yes, Bowen did the conversions. He did other calibers, but 470 was the most common. Cliff Labounty did his reboring, but is now completely retired. So, Bowen got out of the rifle work.

The problem with the safety is that the top part of the button sticks up too high when the gun is off safe. On ejection, the rimmed case catches on the safety button metal tab.

500 NE could also be done on some Ruger #1 458's, but there was a problem with the screw holes in the barrel drilled too deep from the factory, so it was sort of a gamble in getting a 458 that would work for a 500. At one time, they listed a specific serial number range that usually did not have the screw depth problem.

Now, if Ruger would wake up and see how many people are wanting a 470, they could have something. Their cost to build would not really be much higher than any other caliber, and they probably could sell them easily for $1600

I handled a Ruger #1 that had been rechambered from 45-70 to 450 Nitro 3.25. It had a 22 inch barrel, and was so light, I would imagine that full power loads would back you out from under your hat...

quote:

Originally posted by johnnyreb:
I handled a Ruger #1 that had been rechambered from 45-70 to 450 Nitro 3.25. It had a 22 inch barrel, and was so light, I would imagine that full power loads would back you out from under your hat...

I'll bet! However, if I do this, I'll use the heavier tropical version (1H).

I have a Ruger #1 in .45-3/14" and it will "back you out from under your hat", especially with 96 grs. of WW-785 and a 500 gr. Hornady.

quote:

Originally posted by Masterifleman:
I have a Ruger #1 in .45-3/14" and it will "back you out from under your hat", especially with 96 grs. of WW-785 and a 500 gr. Hornady.

That sounds like fun. Did you use a tropical #1?

Ya'll should have had the chance to shoot one of my "fun" guns. It was a little 22" h@r handi-rifle rechambered to .45-120, using, nothing less than the same load as the .450 nitro.
500 grainers at I think about 2060, and the 480's at standard 2150.
It was a hat adjuster also. I named it "Mongo".
But then two or three weeks ago, took the barrel off to use it by turning it down for a liner.
The .45-120 will replicate the nitro load perfectly, don't let anyone say otherwise.
But, yeh, you've got to have the rifle to fit it though. I've always thought that the Kodiak mk IV would do well. I just ordered one wed. and am in a state of cloud nine waiting for it to get to my dealer now.
Thing is, I can't see myself changing the chambering on such a fine gun. The .45-70 will replicate the ballistics of the old .450 bpe, so that's all I need for hogs anyway.