For some time I have had the idea to get another 378 Weatherby to replace my long gone Mark V. These days I tend to use the McMillan stocks versus the glossy Claro that was on my Mark V in the day.

On my hunting rifles which are all Model 70s I have them in the McMillan Supergrade stocks and they suit me well.

I have looked at trying to have a Winchester action hogged out to accept the 378. That looks less doable.

Or I can just buy a 375 H&H Winchester Model 70 and have it rechambered to a 375 Wby and not loose much really. But it seems that with the 378 extra capacity I could go with some 350 grain bullets and cover all the big bore use Im ever going to use from here forward in my life.

But there are a number of Mk V 378's for sale, lightly used at that , and I could just restock one of those. I am going to check with Hill Country Rifles and see what they say. But on the McMillan site they only offer their Mark V stock and a Sako style stock for the Weatherby actions.

I looked at the Montana rifles but after seeing the thread here Im not so sure on that. So its either Weatherby in 378 or maybe the 375 but Id go Model 70 in that.

Its been so long since I shot a big Weatherby like this I can't say how well the Weatherby design stock handles that heavier recoil.

Does anybody have any input on this? Just buy the Sako style stock? And a muzzle brake!

TexKD,

Do you need more than the 2600 fps with 350-grainer that you can get from a .375 Wby?
Or do you just want it for kicks?

I can vouch for the below working out very well:

1. Rechamber a Winchester M70 .375 H&H to .375 Weatherby Magnum (CIP).

2. Rechamber a CZ 550 Magnum .375 H&H to .375 Weatherby Magnum (CIP). Load it long-COL like Saeed does with his .375/404J with Walterhogs.

3. Rechamber a CZ 550 Magnum .375 H&H to 378 Weatherby Magnum (CIP).

The B&C-made "Medalist" style stocks (Kevlar/Aramid) are available for all the above.
I add an inch of slip-on pad and like it better, thusly double-padded for 14.5" LOP.

I have grown soft. I only have one McMillan stock I ordered with my preferred 14.5" LOP over a single, 1"-thick Decelerator pad screwed to butt.


Anyone who claims the .458 Winchester Magnum is ineffective has either not tried one, or is unwittingly commenting on their own sheepishness.
Rip
.

quote:

Originally posted by RIP:
TexKD,

Do you need more than the 2600 fps with 350-grainer that you can get from a .375 Wby?
Or do you just want it for kicks?



Anyone who claims the .458 Winchester Magnum is ineffective has either not tried one, or is unwittingly commenting on their own sheepishness.
Rip
.

Thats a good point!

But really I think I just wanted the 378 because it was different than " meh another 375 ". Ha!

Thanks RIP and the 375 thread jolted me into action here.

Weatherby stocks are great for recoil, the best in my opinion.

Best gun for a 378 is the Deluxe but with the barreled action from the Custom Shop.

But unless you just "want" a 378 then the 375 Wby as RIP has pointed out makes an awful lot of sense.

also worth mentioning Saeed and his 375/404 Improved. Saeed has that loaded back to ballistics that a 375 Wby can achieve with ease.I reckon Saeed has shot more game from chipmunks to elephants the rest of the forum combined. He has a pair of those rifles and has used them for years. BUT AGAIN, he loads back and you can have his ballistics with ease in the 375 Wby.

Thats a great point too Mike.

Now I just need Saeed to sell me some of those WalterHog bullets.

I had remembered the Weatherby stocks are supposed to be designed to move recoil away from the shooters face. I can't say that I remember that - but I have to have shoulder up one again.

Im going to chase around some and see whats out there. A rifle that Weatherby makes in the 30-378 (the Arroyo) looked good to me too. With a heavier barrel. Maybe a call to Weatherby in the cards to just buy one ready to go in 375.

Interestingly I looked and there was no 375 Wby option. I guess they dropped it again but the 378 was still there in the DeLuxe. But I have to believe Weatherby will build any of them in a Weatherby caliber.

375 rum? can order it and be done...

the shortest path to what you want is a cz in 375, rechamber for 378, use a 416 rigby follower ...

or, but a cz 416 rigby action, barrel to 378, drop in the stock of your choice ...

contact bitteroot for cz work
http://forums.accuratereloadin...=profile&u=391102526

quote:

Originally posted by TexKD:
Thats a great point too Mike.

Now I just need Saeed to sell me some of those WalterHog bullets.

I had remembered the Weatherby stocks are supposed to be designed to move recoil away from the shooters face. I can't say that I remember that - but I have to have shoulder up one again.

Im going to chase around some and see whats out there. A rifle that Weatherby makes in the 30-378 (the Arroyo) looked good to me too. With a heavier barrel. Maybe a call to Weatherby in the cards to just buy one ready to go in 375.

Interestingly I looked and there was no 375 Wby option. I guess they dropped it again but the 378 was still there in the DeLuxe. But I have to believe Weatherby will build any of them in a Weatherby caliber.

With Weatherby and the custom shop, if you get anything that is not listed as "standard custom shop" like the Safari for example and the others, then it will cot plenty of money.

I disagree with Jeffe on his route to a 378 but that is personal.

If a 378 is going to be used as a long range gun and shooting from improvised rests they need a muzzle brake on them. I am, not even considering pain of recoil but the rifle movement.

If you are just looking for a real big banger and not stuck with the 375 bore size the the 30/378 and especially the 338/378. The 30/378 comes in the cheaper, much cheaper, synthetic stock (which are great)not sure about the 338/378 at present. It comes and goes in the Synthetic so check website.

The 338/378 gives big horsepower with heavy bullets but it also matches the 300 RUM in terms of equal velocity for equal sectional density.

Having said that I have owned seven 378s but not so many of the smaller bores on the 378 case

I agree with Jeffe on the 375 RUM, which is essentially what Saeed has. A mate of mine (he post mainly on Political as Blair 338 RUM) have had them all and there is no doubt the RUMs, whether 300., 338 or 375 are real hard to beat. They are a lot "easier" than the 378 stuff but the 378 stuff just have heaps more pizazz

If I was to factor in performance, pizzaz factor, practicality and anything else then out of the 300, 338 and 375 RUMs and the 30/378, 338/378 and the 378 I would pick the 338/378. However, my previously owned in terms of numbers owned says "the 378"

I got a 378 by semi-default back in the day. I had a 300 Wby and 270 and I got my buddy to get a 378. On the first shot from it ( another story in itself) the scope cut his eye and that necessitated a trip to hospital for stitches and someone to buy the rifle. The next thing I knew . . . I didnt shoot it much though.

Sometime later I sold my Weatherby's in the wood stocks and after a round through Sako's , I needed up with the Winchesters which was good too. But I liked the Weatherby cartridge and the effectiveness. I should have probably just stayed the course with the Weatherby's - but what fun would that have been.

Previously I had only shot the Weatherby factory loads in the Weatherby's. I hand load or reload for most of the regular calibers but only in the last year or so got the Redding Weatherby dies. The 300 Weatherby in my Model 70 is easy to load for which was somewhat a surprise to me. I can't say why exactly on either the ease, or why I was surprised.

I am sure you are right on the muzzle brake too and muzzle movement on firing. I might even put a recoil reducer in the stock. But when my buddies shoot it, I'll be sure to take the muzzle brake off. To let them have the full on experience.

I'm going to bail off into this sometime in the New Year.

quote:

Originally posted by TexKD:

I am sure you are right on the muzzle brake too and muzzle movement on firing. I might even put a recoil reducer in the stock. But when my buddies shoot it, I'll be sure to take the muzzle brake off. To let them have the full on experience.

Forget the recoil reducer in the stock. The brake is what minimises rifle movement.

If you want kick the shit out of your mates then you really need a German or Jap 378 as the barrels are super light. The Made in USA, from about 1995 from memory, have the same contour as the 416 Wby which is also the contour for the Accumarks except the Accumarks are fluted.

a 378 in a model 70 isn't going to turn out great .. remember, it's a belted rigby, not an HH based round

I agree with that jeffe. ^

If I went for the Model 70 then I would have to go back to the much smaller pipsqueak round of the 375 Weatherby.

Well it seems to me at least the easiest way is to find a used mark V, preferably a USA made one and stock it as you like. The Weatherby stock does handle recoil well regardless of what the nay sayers (who likely have never shot one) want you to believe. Synthetic versions are available if that's what you want.

One thing about Weatherby actions is they got better as time went on. Even though some folks think the German ones are for some reason the most desirable there's a good reason why Weatherby moved on. The USA versions are by far the best all round. Even though they are a push feed that some on AR think will get you killed, the action combined with the inline feed is about as slick and reliable as a gun is ever going to get. If you add the drop box that Weatherby sells it ups the magazine capacity to three. A pretty nice package.

They do sell exactly this in their DGR series also.

quote:

Originally posted by Cougarz:
Well it seems to me at least the easiest way is to find a used mark V, preferably a USA made one and stock it as you like. The Weatherby stock does handle recoil well regardless of what the nay sayers (who likely have never shot one) want you to believe. Synthetic versions are available if that's what you want.

One thing about Weatherby actions is they got better as time went on. Even though some folks think the German ones are for some reason the most desirable there's a good reason why Weatherby moved on. The USA versions are by far the best all round. Even though they are a push feed that some on AR think will get you killed, the action combined with the inline feed is about as slick and reliable as a gun is ever going to get. If you add the drop box that Weatherby sells it ups the magazine capacity to three. A pretty nice package.

They do sell exactly this in their DGR series also.

100% spot on with everything.

I would opt for two options...Use a pre 64 Win in 06 and just open it up, change the bolt stop or use a factory 300 or 375 H&H pre 64 and rechamber the .375 or rebarrel and rechamber the 300...

I, personally, would buy a 375 H&H pre 64 and rechamber it..The rifle itself will cost more, but the gunsmithing will be considerably less...so its a push. I would prefer a super grade mod 70 pre 64 in 375 H&H for probably a little less money, or a 375 IMP. conversion..Lots of options.

Here's a NIB Remington Custom Shop KS in 375 RUM from Mark at First Stop. Looks like he bought out a number of items from the Remington Custom Shop, which is in the Dakota plant right by him. Search his listings...there are quite a few rifles in LH as well.
https://www.gunsamerica.com/94...rth-American-NIB.htm

quote:

Originally posted by Atkinson:
I would opt for two options...Use a pre 64 Win in 06 and just open it up, change the bolt stop or use a factory 300 or 375 H&H pre 64 and rechamber the .375 or rebarrel and rechamber the 300...

I, personally, would buy a 375 H&H pre 64 and rechamber it..The rifle itself will cost more, but the gunsmithing will be considerably less...so its a push. I would prefer a super grade mod 70 pre 64 in 375 H&H for probably a little less money, or a 375 IMP. conversion..Lots of options.

Good thoughts Ray. And I am looking at a 375 H&H Model 70 Classic as well. I like the CRF Classics and they have liked me so far.

quote:

Originally posted by Biebs:
Here's a NIB Remington Custom Shop KS in 375 RUM from Mark at First Stop. Looks like he bought out a number of items from the Remington Custom Shop, which is in the Dakota plant right by him. Search his listings...there are quite a few rifles in LH as well.
https://www.gunsamerica.com/94...rth-American-NIB.htm

Normally I wouldn't give a Remington a real look. But that one is nice and you figure it has to be well done from the custom shop and Mark and First Stop are just tops too. Thanks for that.

But there is the weirdness of having the 375 WyBee around to consider too. Thanks again.

quote:

Originally posted by TexKD:

quote:

Originally posted by Biebs:
Here's a NIB Remington Custom Shop KS in 375 RUM from Mark at First Stop. Looks like he bought out a number of items from the Remington Custom Shop, which is in the Dakota plant right by him. Search his listings...there are quite a few rifles in LH as well.
https://www.gunsamerica.com/94...rth-American-NIB.htm

Normally I wouldn't give a Remington a real look. But that one is nice and you figure it has to be well done from the custom shop and Mark and First Stop are just tops too. Thanks for that.

But there is the weirdness of having the 375 WyBee around to consider too. Thanks again.

That rifle is good and 375 RUM is great.

Many years ago I switched to using a bigger case capacity to get a set of ballistics. For example, 3150 f/s with 130 grain 270 bullet. The 270 Wby does that in a walk, with about any powder as compared to 270 Winchester. Brass life is forever and barrel life is longer, not that barrel is a big deal.

As was mentioned before Saeed with his pair of 375/404 Improveds is doing that. In his case he is duplication top 375 Wby ballistics but can do that with backed off loads in his 375/404 Improved.

I didn't realize until now that the RUM in 375 had any more case capacity than the H&H or the Wby. Wow.

quote:

Originally posted by TexKD:
I didn't realize until now that the RUM in 375 had any more case capacity than the H&H or the Wby. Wow.

Heaps more.

Basically and assuming equal pressure and equally suitable powders etc. there is about 100 f/s difference between the 300 Wby/375 Improved case and the RUM case and another 100 f/s between RUM and 378 case.

Having said that the 375 Wby?Ackley does better over the H*H than case capacity differences would suggest and the reason is powders. Although with Re15 and 270 grainers things are different.

Problem with the H&H is the 4064 burn rate is bit fast and the 4350 burn rate a bit slow and especially with long spitzer bullets.

However, the 4350 burn rate is spot on for the 375 Wby/Ackley.

Back in the 1960s in Australia we had two commonly available powders. The old 4831 and a powder called 4740, which from memory was used for Canadian 303 military loads. It is about the 3031 burn rate.

Two common chamberings were the 218 Bee Improved on the Martinis and the 270 Improved on rebarreled M17s. They were done as "Improved" because the 4740 was a bit slow for 50 grainers n the 218 Bee and the 4831 was a bit slow for 100 grainers in the 270.

Thus the caveat I put in at start of post about "equally suitable powders"

Having own all of them I would rate them this way.

375 H&H ... For a full custom wood gun on the M70/M98 ... wins easy

375 H&H ... Best combination of performance and practicality. It is more practical than the H&H

375 RUM ... I guess Saeed's long term use of a pair of 375/404 Improveds from the smalles to biggest game says a lot, a real lot. It is also quite practical with respect to fitting actions and brass cost. For someone who is at least a fairly keen reloader and a bit of a gun nut, it gives up very little to the H&H/Wby in the practicality score.

378 ... There is just something about cracking 3000 f/s with 300 grainers as opposed to being stuck at 2900 like the RUM The 3150 f/s with 270 grainers. But action choice is limited, bras is costly and so on. The very long parallel free bore (same as the 460) makes it somewhat fussy to load for as compared to the RUM. In short there is a considerable drop in practicality as compared to the 375 RUM.

Just personal but I think a 378 (or a 30/378) made up on a CZ is an abortion. The 378 and 30/378 are strictly Mark V rifles.

You know one thing I like about Weatherby - besides that fact that they have hung in there all this time and continued to build quality products and support hunting - is that there is always brass available. Yes it is not cheap. But it is high quality.

I did look at and saw that there was only one factory load anymore from Weatherby for the 375 which is the 300 Partition.

There are several loadings in RUM but at least Midway did noy have any from Remington and there is no Remington brass.

But I do like the idea of the rifle and the extra case capacity. That rifle would be a better buy than rebarreling a M70, new stock, etc .

In 378 it would be Mark V for me all the way too. It is Weatherby across the board in 378.

Interesting and fun. Informative too. Thanks guys. Throw on in and add on in the thread.

My take on a DG rifle is lots of them are nice guns, but many are not control feed..I would not use a DG rifle that isn't a control feed gun..

I know this wrankles the push feeders on AR, and other internet shows, but its my life and my decision as it is theirs also..

I have had a couple of problems with push feeds and seen many more of which a couple were close calls but all ended well, it did however make a believer out of me however..

Ive also seen a couple of failures with control feed guns for various reasons but not even nearly as many as Ive seen with push feeds..

If my life depended on it I would take an inline feed Push Feed over a stagger feed CRF everyday of the week.

Doubly so for calibres like 458 Win/Lott and others where bullet diameter is not much smaller than chamber opening and then a redoubling if calibres are loaded with blunt bullets.

quote:

Originally posted by Biebs:
Here's a NIB Remington Custom Shop KS in 375 RUM from Mark at First Stop. Looks like he bought out a number of items from the Remington Custom Shop, which is in the Dakota plant right by him. Search his listings...there are quite a few rifles in LH as well.
https://www.gunsamerica.com/94...rth-American-NIB.htm

$1400 is a deal, the parts to build would cost more.

M

quote:

Originally posted by Mike McGuire:

375 H&H .375 Weatherby Magnum ... Best combination of performance and practicality. It is more practical than the H&H

There ya go Mike, I fixed at least that little bit of nonsense (typo, surely) in your above post rating various .375-caliber rifles.


Anyone who claims the .458 Winchester Magnum is ineffective has either not tried one, or is unwittingly commenting on their own sheepishness.
Rip

quote:

Originally posted by RIP:

quote:

Originally posted by Mike McGuire:

375 H&H .375 Weatherby Magnum ... Best combination of performance and practicality. It is more practical than the H&H

There ya go Mike, I fixed at least that little bit of nonsense (typo, surely) in your above post rating various .375-caliber rifles.


Anyone who claims the .458 Winchester Magnum is ineffective has either not tried one, or is unwittingly commenting on their own sheepishness.
Rip

Yep, typo

Ron,

What did you think of my assessment of the 375 bores?

quote:

Originally posted by Atkinson:
I would opt for two options...Use a pre 64 Win in 06 and just open it up, change the bolt stop or use a factory 300 or 375 H&H pre 64 and rechamber the .375 or rebarrel and rechamber the 300...

I, personally, would buy a 375 H&H pre 64 and rechamber it..The rifle itself will cost more, but the gunsmithing will be considerably less...so its a push. I would prefer a super grade mod 70 pre 64 in 375 H&H for probably a little less money, or a 375 IMP. conversion..Lots of options.

Well the problem with that is the pre 64 model 70 was never intended for such a fat & long cartridge without a lot of butchering. I'm not a gunsmith but if a .378 Wby was reasonable in a model 70 than a classic m70 would be a far better choice since it comes from from the factory as a .375 length action rather than the pre 64 .30-06 length. It was designed to fix the pre 64 limitations. But as I said I don't know the how sensible such a fat cartridge would be in any of them. Especially since there are bigger actions out their to handle the big/fat cartridges.

I love m70's too so don't take this as a knock on them, but the pre 64 while nice isn't always everything it's cracked up to be.

quote:

Originally posted by Mike McGuire:
Ron,

What did you think of my assessment of the 375 bores?

Mike,

I try not to think much about it.
Especially the part about how great the .375 RUM is with rebated rim and tight throat.
And that part about abortions ... Eee-uuuu!

Anyone who claims the .458 Winchester Magnum is ineffective has either not tried one, or is unwittingly commenting on their own sheepishness.
Rip...

quote:

Even though they are a push feed that some on AR think will get you killed

Oh please! And Toads will give you warts, and bullets speed up in flight, and.....

quote:

Originally posted by Biebs:

quote:

Even though they are a push feed that some on AR think will get you killed

Oh please! And Toads will give you warts, and bullets speed up in flight, and.....

If the CRF people want to try an experiment then:

Get a Mark V in 416 Wby and a CZ in 416 Rigby and load both rouds with a 400 grain Hornady loaded backwards.

Then belt the bolt closed with a rubber mallet.

CZ ... jammo time Of course the CZ is having to deal with staggered feed and etc.

Next experiment ... Put a few burrs on the case rims. That brings CRF to a stand still.

Next ... leave a primer protruding ... end of CRF.

PF (especially the M70s) will normally win on extraction since the as the extractor bites and the bolt is turned ... when you take the cork from a bottle of wine do you try and pull the cork straight out or do you "twist it" as you pull it.

Having said all of that I think the CRF is just the best thing to watch working. Absolutely love them.

As a side note, would CRF work on a semi auto or would the bolt close too fast? Also, assuming case rims are in very good condition.

Just to add to my above post.

If I was going to Africa or America where very few animals are shot then CRF would be 100% because ammo/feeding would be checked and ammo looked after.

But in Australia and especially in the 60s and 70s we had M17s and M98s converted to 270 and some brass had shot case head/extractor groove dimensions. From memory, one was called "Hirtenberg"?? a Euro brand. Case rims too big in diameter or extractor grooves not deep enough and end of CRF. Thus the Sako was the thing.

I'll add in on the ultra...it's 99% of the 378...and do you really want the last 1%??? I have 2 rums and they are Magic with big animals...if you want to go CRF 378...do the CZ....

Ed

Ed, with the 378, I got tired of pulling my pants back up after each shot!

I went with a Model 70 and it is going to become a 375 Weatherby when I can get down to Hill Country Rifles. With 250 grain to 350 grain bullets it ought to get it done and of course I'll still have the H&H option if it should become necessary.

Biebs had pointed me to a good 378 Mark V. He wanted to know I have had have my eyes set back and my sinuses opened bigly.

Cougarz,
You might be right, it can be done but your crowding everything..

Form my point of view, the 375 H&H is proven performer, with a 100 or so years of proving itself..