Currently available way to get a 4 round magazine Winchester 70 375 H&H

[Ontario Hunter]

Well, I misstated the obvious: If we are talking about Oberndorf bottom metal, then I assumed (we know how that goes), that a reader would understand the mechanism, with the hinged floorplate that opens and swings down.

The point is Pre-64 use an integral magazine box, properly dimensioned for the cartridge(s), and the feed rails of the action correspondently dimensioned for proper feeding (a la M98).
Post 1994 Classics use a separate magazine box, that dimensions determine the feeding for the cartridge(s).

Interesting about the NECG Magnum follower and trimming to work with .404 Jeffery.
I bought one for an Interarms Whitworth .375 H&H, that was not feeding properly. That and a new magazine spring, problem solved.

I tried several places to find a follower spring that was not tapered at the end like military Mausers. No luck. NECG used to sell magnum springs but no longer when I needed one. I seem to recall Hoosier or Midway also listed them but out of stock. My follower from NECG would have been a good fit for magnum Mauser action but lengthwise a tight fit in my standard action build for 404. The very slight trimming to follower side tab(s) was mostly to fix occasional hangup where mag box meets receiver. Mostly, as I recall, it involved beveling the square edges of tabs.

 

[Nevada Mike]

I have the Sunnyhill extended bottom metal on my 'Classic' M70 .375 H&H rifle. It holds 4 down and works just fine. I had a custom stock made so that it fit properly. It is designed to use the standard magazine that came with the rifle.

Here is a photo prior to final stock finishing...

 

[cajunchefray]

Really Nice. Thanks for posting this picture.

 

[Bill_D]

I have read about the Duane Weibe XRM magazine box that was available for the Winchester 70 in 375 H&H. Unfortunately, it does not seem to be available anymore. Is there anyway that is currently available to increase the magazine capacity? I read something about changing the magazine spring to one without a hump using Winchester P/N U356420930 Magazine Spring L/A; does that work? It really seems a shame that the XRM stopped being available.

Interestingly, my gramps 1965 produced Winchester 70 375 h&h, the first of the push feeds, (completely stock as far as I can tell, with no drop box mag) holds 5 rounds below a shut bolt in the magazine and cycles well. Idk what they did to accomplish this in a flush magazine. I was surprised to learn this the first time I fully loaded it.

 

[CZDiesel]

My Pre-64 Winchester 375 H&H has a Sunny Hill and it’s holds five, almost six, in the magazine.
So with one in the chamber a full six rounds of 375 H&H is a lot of hate and discontent to throw down range!

 

[MaxM25]

Interestingly, my gramps 1965 produced Winchester 70 375 h&h, the first of the push feeds, (completely stock as far as I can tell, with no drop box mag) holds 5 rounds below a shut bolt in the magazine and cycles well. Idk what they did to accomplish this in a flush magazine. I was surprised to learn this the first time I fully loaded it.

I wonder what is different between the post 64 rifle you mention and the newer Classic rifles. Did Winchester change the magazine box or is there some other significant change? 5 round of 375 H&H below a closed bolt is way different than 3 in the newer rifle.

 

[wesheltonj]

Why? If the perfect DG gun is a double, why would need or want more than two?

 

[MaxM25]

Why? If the perfect DG gun is a double, why would need or want more than two?

Probably because sometimes 2 isn’t enough.

 

[pilar]

Interestingly, my gramps 1965 produced Winchester 70 375 h&h, the first of the push feeds, (completely stock as far as I can tell, with no drop box mag) holds 5 rounds below a shut bolt in the magazine and cycles well. Idk what they did to accomplish this in a flush magazine. I was surprised to learn this the first time I fully loaded it.

I’m curious about this, my post 64 M70 didn’t have any bottom metal or hinge
Just 3 +1 and wooden bottom
I wonder if Winchester was playing around for a couple years after re tooling?

 

[Nevada Mike]

I’m curious about this, my post 64 M70 didn’t have any bottom metal or hinge
Just 3 +1 and wooden bottom
I wonder if Winchester was playing around for a couple years after re tooling?

Interesting. I've never seen a factory M70 with a bland magazine.

 

[MaxM25]

Interestingly, my gramps 1965 produced Winchester 70 375 h&h, the first of the push feeds, (completely stock as far as I can tell, with no drop box mag) holds 5 rounds below a shut bolt in the magazine and cycles well. Idk what they did to accomplish this in a flush magazine. I was surprised to learn this the first time I fully loaded it.

Would you have pictures of this rifle you could post?

 

[Slope77]

Jim Brockman, http://www.brockmansrifles.com/index.php has made a few extended Model 70 magazine floor plates for me.

View attachment 647766

This is very very interesting because it looks like a simple floorplate change and no restock. Most of the items posted in this thread, like the extender sunny hill, require a restock.

Alaska arms

Ruger Extra Round Floor Plate-Standard Magnum calibers

Upgrade your Ruger M77 rifle with the Ruger Extra Round Floor Plate by AlaskaArmsLLC. Increase ammo capacity for standard and magnum calibers.

alaskaarmsllc.com

Offers a very nice looking similar product for Rugers. Unfortunately, I have messaged them several times asking if they would do the same for an M70, with no response.

This seems like a low cost, easy solution.

 

[Bill_D]

Would you have pictures of this rifle you could post?

Yes I will, sorry I did not see this, I’ll take some.l and post.

 

[Foxfyre]

I'm talking with Mr. Wyatt of wyattsoutdoor.com about reproducing the Weibe XRM for the Win70 safari express. He's already reached out to Mr. Weibe and received permission as well as several exemplar blanks for reproduction. He's also talked to Wayne at AHR who has an exemplar finished piece for him to examine.

I'ld really like to drum up support for this and assist in helping development to meet both pre-64 designs as well as post 2006 FN-herstal designed safari express. I'm pretty sure that original XRM fit a winchester with two piece trigger guards... I'm not sure what the pre-64 or post-2006 trigger guard designs are. Does anyone have an example they could show us?

Once I pick up a safari express during the winter production run, I'll send it in so Mr. Wyatt can take measurements and run tests but any help we can get along the way would be appreciated.

 

[MaxM25]

I'm talking with Mr. Wyatt of wyattsoutdoor.com about reproducing the Weibe XRM for the Win70 safari express. He's already reached out to Mr. Weibe and received permission as well as several exemplar blanks for reproduction. He's also talked to Wayne at AHR who has an exemplar finished piece for him to examine.

I'ld really like to drum up support for this and assist in helping development to meet both pre-64 designs as well as post 2006 FN-herstal designed safari express. I'm pretty sure that original XRM fit a winchester with two piece trigger guards... I'm not sure what the pre-64 or post-2006 trigger guard designs are. Does anyone have an example they could show us?

Once I pick up a safari express during the winter production run, I'll send it in so Mr. Wyatt can take measurements and run tests but any help we can get along the way would be appreciated.

I am totally in if you can make it in stainless. I have a stainless Classic in 375 H&H that it needs to work for. This is an awesome initiative and I would buy a couple of them.

 

[Foxfyre]

I am totally in if you can make it in stainless. I have a stainless Classic in 375 H&H that it needs to work for. This is an awesome initiative and I would buy a couple of them.

He mentioned that it would only come in stainless as that is what he primarily works in. And same: if he can get this going I want to future proof and get several.

 

[jaycee]

I am totally in if you can make it in stainless. I have a stainless Classic in 375 H&H that it needs to work for. This is an awesome initiative and I would buy a couple of them.

Are the same one that posed this on Campfire?

It already will work on your .375 H&H Stainless Classic. It has on two of mine and 3 others that I know of. No need for a Weibe magazine box. All that is needed is to replace your magnum magazine spring (the one with the huge speed bump) with a standard magazine spring. You will then have a magazine that easily holds four down with enough room to push the 4 down so you can chamber a 5th round.

This will work for either a 300 or 375 H&H with their tapered design - it won’t work with a straight walked magnum like a 300 Win Mag, 300 Wby, 416 Rem, etc.

You need to just get yourself a standard spring (or take one out of a non-magnum Model 70 if you have one on hand to try it) and be done with it. No need for a Sunny Hill floorplate and a custom dropped-belly stock.

 

[Foxfyre]

Yes I am. Just note, he just learned that his standard extra long mag will also hold 4 down. It's not drop in and requires milling the receiver and bolt stop a bit. It may not be something he still wants to redevelop.

I had read things about the spring but worry that the humped spring had a purpose of some sort: add extra power or to prevent over-compression and eventual breaking of the spring? A drop-in item that lets you use the original spring should maybe be the goal until we know the purpose of the hump in the spring.