Home Forums Hunting & Shooting Custom Rifles & Wildcats 338 H&H

I often favored the idea of a 7-300H&H, even though others have built a better mousetrap. Think a 338-300 H&H could scratch an itch.

Novel, to be sure, but why? The .338 Winchester Magnum is a wonderful cartridge, not sure what's gained with the H&H case. It feeds great, is friendly to standard length actions (a particular strength when using any of the scores of good Mauser '98s out there). As some have alluded above, the 8mm Remington Magnum was/is pretty close, and it didn't exactly light the world afire. True that the 8mm in general hasn't generated any excitement, but it's still a close comparison.

I just wish Winchester would have based their .300 on this one (I know the story of Norma beating them to the punch and all that...) instead of the new one they cooked up.

If I had a classic OLD 300 h&h with a screwed up bore this would be a great idea. Re-bore and re-rifle.

Think quarter rib, sights, fancy ramp sight, etc.

av, the 7mm-300H & H was also tried my Keith, and others.. As near as I can tell it was called a 280 Dubiel.. Keith and Harry Snyder used this caliber a good bit in the 1930's.. It was Elmers coyote, antelope, deer rifle for quite a while as near as I can tell.
From all I read, they merely necked the old .300 H & H down to 288 Caliber and had the .280 Dubiel or 7mm/300 H & H, but the used 288 dia bullets instead of 284..

I know there are better mousetraps ... but why not? I have heard of the .288 version, never seen one though.

I've had the itch for a 7-300 H&H for about 5 years now. I'm quite sure Remington's 7 em em would do as well if not better. Is that a reason not to do it? Obviously for some, yes. Fortunately (or unfortunately) the funds/needs/priorities aren't inline to try this.

gjh

I think it would be a simple build on a long action 700.. I m not a died in the wool 7mm man, but it would be a novel build..
Kind of a retro deal..

New to the forum and just posting.

The conversation on the 338H&H. I just had a gentleman bring me this exact rifle and ammunition to clean the gun, give it the once over before a hunting trip and reload 50 rounds his factory once fired empty brass.

Gun was a custom, mauser action and rechambered 338 win mag to the new debth and shoulder change. The 300 is about .335" longer than to 338 so it was just bored a little deeper and for the shoulder change. Prob didnt take much work.
Was built about 35 yrs ago.
So they do exist.
Everything he had was labeled 340 Yukon.

He even had a set of reloading dies for me to use that were custom made by RCBS and all the loading data imr 4831 69.8 grns and we reloaded with a Hornady 225 SST

The factory 300 H&H brass was reworked by someone yrs ago and was not bench rest brass casings, factory brass and necked up to the 338 but was reworked and had a very aggressive shoulder on it right when it started to taper and straight 338 the rest of the way.

Gun worked flawlessly, loaded the rounds and went out and shot it at 200 yrds did very well two 1" groups of 5.

Looking further into the shell it's very close to the Weatherby 340 mag. Both use the 300 H & H as a parent brass but the Weatherby is just a bit differant that you could not use the bullets vise versa the Weatherby is bigger and differant shoulder, close but differant. Just enough differance to not allow.
Using the 225 SST IMR 4831
The Yukon is at about 2800fps
The Weatherby about 3200fps
Both based on factory load tables

So all in all, it's a cool custom gun and the first one I've ever seen, but you can buy a factory 340 Weatherby mag and virtually get the same thing.

Marty

Sounds like a .338 H&H Ackley Improved from the description? I have a 300 H&H Improved in a pre 64 70 and use 300 Weatherby loading data. Exceptionally accurate rifle and my son loves it. I'm pretty sure I won't be getting it back from him any time soon...

Bob

Pretty darned cool old rifle. I read about Havel and of course Keith’s use of them boomers and eventually got my own 338. Always been a good game getter. That’s 300/338 H&H looks pretty danged cool as well. Cool old thread.

Bob, I’ve almost bought a few if those rechambered 300 Improved over the years. Those were pretty common usually. Sounds like a great rifle.

Well, I got lucky on this one. Got it from a friend and it has the "T" trigger on it, which is the Wimbledon target trigger from Winchester. Best trigger on any of my big game rifles I own....

Instead of necking the 300H&H up to 338, you can neck down the 375H&H to 35cal.

It's called the 350 G&H Magnum.

Yeah, I’ll say. Sounds like a great rifle.



I like the sounds of that one too. I’m kind of a 35 Newton guy, but man, would that 350 G&H be an easy one...