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View Full Version : What experiences have you with 475 JDJ/GNR in lever action?



Naphtali
08-24-2008, 01:08 PM
Those of you who have experience with 475 JDJ or 475 GNR in rifles/carbines -- 45-70 brass blown out to .475-caliber -- what are your experiences? Cartridges of the World comments that the cartridge is significantly more effective on game than comparably loaded 45-70s. Apparently, this cartridge class was first intended for T/C Contenders rather than lever action rifles. A conversion from 45-70 would appear to be simply a barrel rebore/replacement. The cartridge should be equivalent to a 475 Linebaugh on steroids. But this isn't a particularly useful sentence.

6pt-sika
08-24-2008, 08:37 PM
This 475 JDJ/GNR is on my list of long term wants right along with a 50 Alaskan !

Personally I would like to have both on rebarreled Marlin 1895G's . Same basic configuration as the stock 1895G . Just screw on new or rebore the old barrels and do whatever needs to be done inside !

And they both will siut me just fine !

And you ask what am I gonna do with them ?

The same thing I do with my 375 H&H MAG and 416 REM MAG ! Take them out and shoot them from time to time ! Maybe kill a deer or two with each and keep them locked in the safe for the remainder of the time :roll:

Lloyd Smale
08-25-2008, 08:39 AM
cool cartridge but i guess i would go with a 50ak. the cost would be the same.

missionary5155
08-25-2008, 10:33 AM
cool cartridge but i guess i would go with a 50ak. the cost would be the same.

A short .50 ! That would sure make a Marlin roar....
What FPS do you think a 350 grain 50/50 boolit would get... ?

Lloyd Smale
08-25-2008, 01:15 PM
350s in the ak are a waste. The gun comes into its own with 450s at about 1800 If you need to shoot a bullet that light your probably better off with a 4570

Just Duke
08-27-2008, 11:51 PM
Doug Turnbull does a conversion similar to this.

Just Duke
08-28-2008, 09:03 AM
Naph, here you go. Video on the 475 Turnbull.
http://www.youtube.com/watch?v=EkSoFYSoSlI

Give me a jingle and will talk. :-D

Just Duke
08-28-2008, 09:20 AM
Could you have this beauty turned into a 475 Turnbull?

http://castboolits.gunloads.com/showthread.php?t=34856

Naphtali
08-28-2008, 01:29 PM
Duke:

The Turnbull conversions are based upon 348/50-110 basis cases. My reason for querying about 45-70 basis case conversions is to identify a conversion that can be completed as inexpensively as possible. If conversion to 475 JDJ/GNR can be done via rebore or rebarrel only, that's as inexpensive as we get. If work is required on receiver or action parts to accommodate the .476-inch bullets, there goes most of the rationale for the conversion.

6pt-sika
08-28-2008, 04:28 PM
If conversion to 475 JDJ/GNR can be done via rebore or rebarrel only, that's as inexpensive as we get. If work is required on receiver or action parts to accommodate the .476-inch bullets, there goes most of the rationale for the conversion.

I've talked with Wild West a couple times about doing the 50 Alaskan conversion as cheap as possible . And they gave me a price of about $600 . That didn't include a complete reblue as they "claimed" they could most likely do it without needing a total reblue maybe just some touch up !

I also talked with Reeder about the same thing in the 475 GNR and all he wanted to talk about was rebarreling and doing it with all the bells and whistles . So might as well figure $1200 or more !

Talked with Regan Nunneman about doing conversions on 1895G's to either the 475 GNR or 50 AK and he said either one would be $900 . That was for rebarrel , whatever internals needed to be done and a NEW Douglas barrel of the same contour as the factory barrel along with a total reblue .

Since I would like to have both done , my own thought is to have WWG do a rebore on the 50AK and have Nunneman do a rebarrel on the 475 GNR and I'd have about $1500 in work in the pair ! Where as Reeder wants about $1200-1400 for ONE !

You know as I write this I think the best option even though for me it'll be a couple dollars more would be to have Nunneman rebarrel both rifles with an outlay of $1800 for conversions . Then of course dies and brass will most likely be $300-400 for the pair LOL's !

6pt-sika
08-28-2008, 04:38 PM
For what it's worth !

Hornady and Speer make no less then five good bullets you can use in the 475 GNR . The lightest being the Speer 275 grain Gold Dot ! And the largest being the Speer 400 and the Hornady 400 XTP .

I've fired all five of these bullets in 480 Ruger Super Redhawks .

Then there's a decent RCBS and Lyman mould for the 475 as well . Both of these are plain base . But also Lee makes two or three moulds as well with one being a gas check design .

Then there's LBT moulds who makes no less then a dozen moulds that would be prefect for this round . And they can be had in plain base or gas check !

Other then the price of gas checks there are no worries as Hornady has seen fit to continue to manufacture this check !

I think I have 2000 Hornady checks on hand , so I should be fine for quite awhile .

I'm not so sure about who to go to for dies . But if memory serves Hornady is making the 475 GNR dies for Reeder . I also know for a fact that he has correctly headstamped brass made for the cartridge at about a buck a piece . But it's easy enough to make it yourself from 45-70 brass !

This gun to me has no REAL need . However I have wanted one ever since I became aware of it and I'm sure at some point I'll have at least ONE ;)

6pt-sika
08-28-2008, 04:46 PM
Naphtali , might I ask which version of the Marlin 1895 are you thinking of doing the conversion with ?

My own personal preference has been for the 18.75" barreled Model 1895G .

But recently I have thought the standard model 1895 with the 22" barrel would be a good doner !

I had not had much intrest in using the longer barreled gun until I purchased a used Marlin standard model 1895 that had been rechambered to 450 Alaskan .

Now I'm kinda thinking either would be nice the 1895 with 22" barrel or the 1895G with the 18.75" barrel !

And optimum would be a pair of 475's and a pair of 50's :lol:

Just Duke
09-02-2008, 08:42 AM
Btt.....

Naphtali
09-02-2008, 01:50 PM
Could you have this beauty turned into a 475 Turnbull?

http://castboolits.gunloads.com/showthread.php?t=34856YES! The Model 71 is a slight update of the M1886 action. The 348 Winchester is adapted from 50-110 basis case. The 475 Turnbull case was created by Starline and sent to Turnbull Restorations as 50-110 drawn brass necked to .475-caliber but left with extended length. Turnbull trimmed and loaded.
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6pt-sika:

I have a M1895 GS converted to pistol grip. The part that's important is the pistol grip. Were I to rebarrel, it would become a 22-inch octagonal barrel.