.375 H&H in .375 Weatherby Rifle?

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mdblough

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Hi All. I was hoping for a bit of clarification on the .375 round. I am in the process of purchasing a Weatherby Mark V in .375 magnum. I have read online that you can also use .375 H&H rounds in a rifle chambered in .375 Weatherby. Before I load an H&H round in the rifle I wanted to check with people that are much more 'in the know' than myself. The .375 H&H seems easier to come by and less expensive, making it a more desirable round for my purposes.

I would greatly appreciate your thoughts!

Cheers,
Mike
 
There's no problem doing that, makes for cheaper practice ammo if you don't reload and the case will come out a perfectly formed to 375 Wby, I do it sometimes mainly because I have several hundred rounds of H&H ammo.
 
MaxKW said:
There's no problem doing that, makes for cheaper practice ammo if you don't reload and the case will come out a perfectly formed to 375 Wby, I do it sometimes mainly because I have several hundred rounds of H&H ammo.
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Fantastic! Thanks for the info. This what I was thinking - cheaper for range ammo. But from what I have read it is also a great large game hunting round. If the H&H case comes out formed to .375 Wby is there any problem with reloading it as an H&H? Thanks again!
 
mdblough said:
Hi All. I was hoping for a bit of clarification on the .375 round. I am in the process of purchasing a Weatherby Mark V in .375 magnum. I have read online that you can also use .375 H&H rounds in a rifle chambered in .375 Weatherby. Before I load an H&H round in the rifle I wanted to check with people that are much more 'in the know' than myself. The .375 H&H seems easier to come by and less expensive, making it a more desirable round for my purposes.

I would greatly appreciate your thoughts!

Cheers,
Mike
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is it a 375 weatherby or .375 HH?

it will work into a 375 weatherby for sure.

i did that a lot for my 300 wea from 300 hh in the days where brass of hh were easier to find than.

you will have good time if the caliber is the weatherby one ....
 
Firing factory .375 H&H ammo in a .375 Weatherby chamber will result in less velocity than if the round was fired in a .375 H&H chamber. This is due to the case fire forming in a larger chamber.
 
Thanks for the reply. The rifle is a .375 Weatherby Magnum. I had heard/read that the .375 H&H ammo is easier to find and less expensive than the Weatherby, which is why I was thinking about going that route. Cheers!
 
medvedqc said:
is it a 375 weatherby or .375 HH?

it will work into a 375 weatherby for sure.

i did that a lot for my 300 wea from 300 hh in the days where brass of hh were easier to find than.

you will have good time if the caliber is the weatherby one ....
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Thanks for the reply. The rifle is a .375 Weatherby Magnum. I had heard/read that the .375 H&H ammo is easier to find and less expensive than the Weatherby, which is why I was thinking about going that route. Cheers!
 
guntech said:
Firing factory .375 H&H ammo in a .375 Weatherby chamber will result in less velocity than if the round was fired in a .375 H&H chamber. This is due to the case fire forming in a larger chamber.
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Thanks! I had wondered about this. I was planning to use the H&H in the Weatherby rifle for big game hunting, but I am wondering if the loss of velocity might be problematic and risky for hunting.
 
The loss in velocity is probably going to be small/negligible

Why don't you chronograph a few, just to be sure?

Also, what are you going to be hunting? One or even two hundred feet per second is not going to make a huge difference to any critter hit by a 270 or 300 grain bullet going more than 2,000 fps. (And if it will make a difference, fire-form what you've got and load up what you need).

mdblough said:
Thanks! I had wondered about this. I was planning to use the H&H in the Weatherby rifle for big game hunting, but I am wondering if the loss of velocity might be problematic and risky for hunting.
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This is exactly how I made all my brass for my 375 Wby.......fireformed 100 rds of R-P 375 H&H......just loaded them up with some misc bullets I had and pulled the trigger.......voila 375 Wby. If you load, just buy 375 Wby dies and away you go. Sight her in with what ever factory 375 H&H you buy and get hunting, you'll never notice the difference to 300 mtrs.
 
If you are exclusively going to shoot 375 H&H then you might be better served buying a rifle in that chambering.
 
Buy the dies and reload or find a friend that will help you. If he has a press your dies will work. You will get better loads for your gun and save lots of money. Or you wond save much because you will shoot way more. You have a Wby so load it up and get more out of it. Like said, if you are only going to shoot HH sell the Wby and get a H&H.
 
Mike, I'm sure you're aware of this but make certain that the rifle is indeed a 375 Weatherby and not a 378 Weatherby. The 375 HH can be fired in a 375 Weatherby chamber but not in a 378 Weatherby chamber.
 
If you really want a 375 H&H and don't want that 375 Wby, just send me a PM........you could also have it rebarrelled if you like the Mark V. This rifle most likely has a 26" barrel and the velocity loss you experience from blowing out the cases in the larger chamber will be somewhat offset by this factor. This means that you will likely equal a standard H&H with say a 22 or 23" barrel..........so really you should get fairly legitimate H&H ballistics from it.

Could you post some pics of the rifle and chambering markings? Please............It would make a nice mate to my Mark V 378 Wby Mag........
 
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c-fbmi said:
This is exactly how I made all my brass for my 375 Wby.......fireformed 100 rds of R-P 375 H&H......just loaded them up with some misc bullets I had and pulled the trigger.......voila 375 Wby. If you load, just buy 375 Wby dies and away you go. Sight her in with what ever factory 375 H&H you buy and get hunting, you'll never notice the difference to 300 mtrs.
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Thanks! I have the .375 Weatherby dies as well so I think I am set!
 
W3.jpg
 
c-fbmi said:
If you really want a 375 H&H and don't want that 375 Wby, just send me a PM........you could also have it rebarrelled if you like the Mark V. This rifle most likely has a 26" barrel and the velocity loss you experience from blowing out the cases in the larger chamber will be somewhat offset by this factor. This means that you will likely equal a standard H&H with say a 22 or 23" barrel..........so really you should get fairly legitimate H&H ballistics from it.

Could you post some pics of the rifle and chambering markings? Please............It would make a nice mate to my Mark V 378 Wby Mag........
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Here is a link to the rifle. I was curious about the .375 H&H purely out of versatility. From what I have read .375 H&H is easy to come by whereas the Weatherby ammo is more difficult/expensive. I haven't fired it yet but am hoping I do not have any problems. I have heard about extractor and accuracy issues, so it may need a bit of work.

https://www.dropbox.com/s/nippc3k9ks53ltu/W3.jpg?dl=0
 
mdblough said:
Here is a link to the rifle. I was curious about the .375 H&H purely out of versatility. From what I have read .375 H&H is easy to come by whereas the Weatherby ammo is more difficult/expensive. I haven't fired it yet but am hoping I do not have any problems. I have heard about extractor and accuracy issues, so it may need a bit of work.

https://www.dropbox.com/s/nippc3k9ks53ltu/W3.jpg?dl=0
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nice wood on it.

whatever you like shoot it your way.

we had a 375 weatherby that was used with 375hh rws ammo. even if you have a 9.3x62 speed or energy no animal will notice and at least it will work better than the 378 loaner we had .... a lot of wounds came with the 378 certainly bullet that were not enough strong in those days ...
 
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