Any .375 Winchester users here?

Circa a dozen years ago mate Frank G (co inventor of Woodleigh Hydro bullets with John M) shot a water buff up north using the .375 big bore with a W hydro bullet. It went THROUGH the considerably thick horn into the neck and was recovered in the hip!
Blimey!
 
So you might find the Shellhouse bullet might “slug up”
Ay, black powder and soft lead yes, hard lead and nitro hmmm, believe it or not although higher pressure is achieved with nitro it's kind of not until everything starts moving the high pressure comes in. Black powder is an explosion first although low yielding and then everything starts moving.
That's my take on it anyhow.

Now if the op does end up with a slack bullet he could endeavour to paper patch it up and really make them boogie on down the barrel!
End of issue👍🏻
 
Circa a dozen years ago mate Frank G (co inventor of Woodleigh Hydro bullets with John M) shot a water buff up north using the .375 big bore with a W hydro bullet. It went THROUGH the considerably thick horn into the neck and was recovered in the hip!
So I can be reasonably confident of a pass through on roe then? :lol:
 
Yep, any high speed bullet tries to destroy itself the moment it touches something.
A steady bullet with some mass to it just keeps on going.

Ah with the Woodleigh Hydros its recommended to drive them 'faster the better'.

So I can be reasonably confident of a pass through on roe then? :lol:
Yes,with devastating effect.

I shot a fully mature Sambar hind using a 180 GR W Hydro in my .308 Norma Mag. I was instructed from the mate that "mate i need meat to take home" Last chance was the big hind heading away from me and I will say that I am loathe to take read enders. I put the cross hairs on her clacker as she galloped off. The Hydro entered one inch left of her quoit and exited out of her chest into the hill beyond.
If you have ever shot a rabbit up the arse with a .22 WM you will know how it went.....fffffolded!
 
Interesting.

If you read buffalo bore’s site they say on varying bore size for 38-55s which go from 377 to 381 thou



375 BORE RIFLES

We use a bullet that is sized .377 inch. I am aware that 375 Winchester chambered rifles utilize a .375 inch bore. When fired, the .377 inch bullet will slug/size right down to .375 without raising pressures (we’ve tested the heck out of this) this is in part due to the construction of the bullet, but also due to our powder choice.

.381 BORE RIFLES

We are also aware that many old 38-55 rifles utilize a bore diameter of up to .381 inch, but most are between .377 and .380 inch. At 38,000 cup, there is enough pressure generated by this cartridge to cause that .377 diameter bullet to hit the rifling lands and slug up to the bore diameter (all the way up to .381 inch) and give wonderful accuracy.”

So you might find the Shellhouse bullet might “slug up”

Worth a try?

Scrummy
I ran my stuff thru a .379” sizing die . It worked great for the 375 WIN and for the 336CB 38-55 . But for the two Marlin 1893 38-55’s I had .382 or .383” woulda been better .
 
I ran my stuff thru a .379” sizing die . It worked great for the 375 WIN and for the 336CB 38-55 . But for the two Marlin 1893 38-55’s I had .382 or .383” woulda been better .
I suppose if it turns out to be that big I can hone out a mould? Cast a hard bullet then coat it in a fine lapping compound and spin the bullet in the mould, cast another and repeat until it's grown enough? It sounds simple but whether or not it is is another matter!
 
I suppose if it turns out to be that big I can hone out a mould? Cast a hard bullet then coat it in a fine lapping compound and spin the bullet in the mould, cast another and repeat until it's grown enough? It sounds simple but whether or not it is is another matter!
If it were me I’d slug the barrel and order a mold to the diameter I wanted . I’m not a fan of honing them out , I do know some people that have “beagled” a mold think that’s the correct word . Anyway they use some kind of tape that’s not susceptible to heat and they put a few layers on the inside of the two mold pieces to open it a bit . I’m not overly fond of this practice either but atleast if it doesn’t work for you all you have to do is remove the tape and you’re back to square one . Where as if you hone you can’t put the metal back . I mostly used an alloy of straight clip on wheelweights that was no harder than 10-12 on the Brinn hardness scale . I also liked my bullets to be 2 or 3 thousandths bigger than what the bore slugged . As I said I sized .379 for the 375 I sized .433 for the 444 and .462 for the 45-70 .
 
I suppose if it turns out to be that big I can hone out a mould? Cast a hard bullet then coat it in a fine lapping compound and spin the bullet in the mould, cast another and repeat until it's grown enough? It sounds simple but whether or not it is is another matter!
It's standard practice to size to .379 when casting for 375 Win bullets around here . The 375 BBs are all of modern manufacture and have standardized bore diameters . The 38/55s are another story altogether , the bore diameters on those vary widely . I don't think that you'll run into many problems when casting for yours .

AB
 
The .375 is actually thicker in the neck as well. Enough that, using it to form 32-40, the necks have to be turned. Which when using 30-30 brass, is not required.
Necking down makes the material in neck thicker, necking up makes it thinner. Not saying there won't be a difference in the original thickness, and this might also depend on the brass brand.
 
Hi guys. I just put my name to a .375 Winchester '94AE lever gun. I'm wondering if anyone else on here has one?

From what I can gather they weren't made for long, and the cartridge isn't that popular? It's basically a .30-30 cartridge necked up to be straight walled, like a mini .45-70. It seemed interesting so I've reserved it. I've got a few factory rounds to go with it and some brass. Bullets are out there, along with moulds to cast them, but I can't find dies yet.

I'm keen to hear from anyone who may have one in the UK, although feedback on its performance from abroad would also be very much appreciated. I wonder if @Muir or @alberta boy may have stumbled across one? I'm hoping to get it set up as a woodland roe and muntjac rifle - the ballistics of the cartridge look to be well suited to that task.
I you are looking for reloading stuff for the 375 h&h mag. Let me know
 
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