Got To Have A 375 Weaherby Magnum - Finally

[bullet]

I have made a decision. I have wanted for a while a 375 Weatherby magnum custom rifle but got so involved with my 257-300Wby and 270-300Wby customs that I could not afford to do it. Well, in dealing with the 257-300 and the 270-300 I realized that there is going to be a lot of over lap between the two and at times depending on what I would be hunting I would have a tough time deciding which one to use. Well I am bitting the bullet. I am going to build a 375Wby on a Mark V action with a B&C Metalist stock, with a #3 contour 25" shilen barrel with a Brockman on/off muzzle brake which is the same brake on my 270-300Wby. It will have a Zeiss Conquest on it. I have decided to do away with my 257-300Wby because it is to close to the 270-300Wby in capability and they over lap to much and since I want the added power of the 270-300Wby, I will use the camo stock and action from my 257-300Wby. I will be pushing a 300gr Partition at 2800fps and a 300gr TSX at 2860fps and a 250gr A-Frame 3000fps and a 250gr TSX at 3050fps and a 260gr Partition at 3000fps. Now these are velocities from manufactured ammunition. When I reload I will be able to exceed these velocities because these are velocities out of a 24" barrel and when you add my 25" not counting the brake and that reloading generally one can out do factory ammo this will be a good 375 cartridge and rifle. Now I do not know for sure if I will get these velocities out of a 25" Shilen barrel in 375Weatherby. These are just a guess using Weatherby, Conely and Nosler manufactured data. I assume I will exceed them since those represent velocities out of a 24" barrel. I can't wait should have it around the middle of June or first of July. So if I get a chance to go to Alaska in 2009 or 2010 and Tanzania again in 2009 I will have a good rifle and cartridge. Yes I am excited.

 

[russ808]

Best of luck with the new project.

 

[bullet]

350Rem mag is great, 375 Ruger is great but they ain't a Weatherby and you know I am a Weatherby guy. It is not about weight or almost a 375Wby or the idea that one kills just as good as the other. There is no argument there. It all gets down to a 375Wby which I have wanted for a long time and just kept getting other stuff. I will not miss the 257-300Wby because I can push a 100gr in my 270-300Wby at 4000fps. Actually faster than I was able to do with the 257-300Wby. Plus the 270-300Wby can push a 150gr at 3500fps so it covers the bases up to tough dangerous game and the 375Wby will handle that. You see it all gets down to the fact that it is a Weahterby and I have wanted the classic 375Wby since I was a young man. Once again, it is a Mark V Weatherby in a classic cal. that is all it is and anything else is just icing on the cake. Rifles sometimes with me are like changing underwear, everyonce in a while I want a new pair. :lol: :grin: :shock:

 

[Guy Miner]

Agree, there's a lot of overlap between the .257 & .277 bores. Not much difference in practical terms, with the edge in versatility going for the .270 I'd say. Dang, a committed .25 cal nut like me said that???

Looking forward to seeing the completed rifles. Between the two of them, you've got things pretty much handled.

Regards, Guy

 

[Charlie-NY]

Why not a 378 Weatherby magnum?

 

[nomosendero]

Sounds like a good project. I have thought about the 375AI. I read a good article on that, the author said he could & did shoot his AI loads, 375H&H or 375 Wea., which is incredible versatility. Looks like the new Rem. Mauser would be a cost effective way for a poor boy like myself to build a rifle I don't need.
Thanks for rminding me.

Let us know how it shoots.

 

[bullet]

Why not a 378 Weatherby magnum?

350Rem mag is great, 375 Ruger is great but they ain't a Weatherby and you know I am a Weatherby guy. It is not about weight, velocity, looks or the idea that one kills just as good as the other or that the 378Wby is faster. There is no argument there. It all gets down to a 375Wby which I have wanted for a long time and just kept getting other stuff. I will not miss the 257-300Wby because I can push a 100gr in my 270-300Wby at 4000fps. Actually faster than I was able to do with the 257-300Wby. Plus the 270-300Wby can push a 150gr at 3500fps so it covers the bases up to tough dangerous game and the 375Wby will handle that. You see it all gets down to the fact that it is a Weahterby and I have wanted the classic 375Wby since I was a young man. Once again, it is a Mark V Weatherby in a classic cal. that is all it is and anything else is just icing on the cake. And when I get to Tanzania I have to have brass that is stamped the same as my rifles and my wildcats are made from 300Wby brass. I just wanted a 375Wby that is the bottom line, nothing more, nothing less. :grin:

 

[bullet]

P.O. Ackley said the following about the 375Wby, "The 375Wby is one of the very best of the Weatherby line and is a good efficient cartridge for all kind of big game and could be highly recommended for anyone desiring this much power. It is some what superior to the standard .375H&H and any standard .375H&H rifle can easily be rechambered fot he .375Weahterby." Not a bad recommendation. It has a lot of power, well balance in all it's attributes for the powder used and would be more than efficient in killing all kinds of game. Nothing like a classic!

 

[GB300wm]

Great choice bullet. There's nothing like a classic and one you will have. Can't wait to see pics of the rifle. I'm sure it's a fine gun. I chose the 257 that I have because it was one of Roy's favorites. I like the classics too. Great choice, post pics soon.

 

[FOTIS]

Sweet!

My 2 go to chamberings are :

300 Rum or 7mm mag or 25-06 and


my 416 Bee. :lol:

 

[Guest]

As I recall, POP, that 416 is your dedicated pronghorn rifle, right? Maybe you need a 375Wby for the big stuff, too? :lol:

 

[FOTIS]

Naw! I had like 4 or 5 378 Bees and upgraded to the 416 and nevr looked back. Now I do have a 458 lott too! That is my dedicated Sharps rifle. A Ruger #1.

Here is the 416 Bee with 330 GS Custom and 300 Barnes X

Here is my Lott:

 

[jmad_81]

Pop the next time my "friends" make fun of me shooting deer and a few ground squirrels with my .375 Ruger (they call in the cannon) I'm going to show them some of your posts so they know i'm not the only one that likes the big hitters for everything big or small. :twisted: Prety sure it is/should be a legal addiction!

 

[JD338]

bullet

Should be a nice project.
You will have to feed the 375 Wby some of the new 300 gr Accubonds.

JD338

 

[bullet]

Yea, going to try some of them because the ballistics should be perfect for them.

 

[bullet]

Doing some reading and research and found that IMR4350, IMR4064, H380, IMR4320, IMR4895, Varget, H4350, RL-15, and RL-19, are really good powders for the .375Wby. With the velocities of the .375Wby it looks like the 260gr Nosler AccuBond would be a perfect bullet to use for a lot of different thin skin game especially for longer shots with the 375Wby. It seems the coefficient of the AccuBond would give it good down range ballistics. With a 260gr AccuBond 4854ft pounds of energy at muzzle is pretty good and 3" high at 100yds would only be -5" at 320yds with 3053ft pounds of energy left. With a 300gr Partition or 300gr A-Frame you would have 5321ft pounds of energy at muzzle and that is real good and 3" high at 100yds would only be -5 at 300yds with 3079ft pounds of energy left. Not bad for a .375 cal. bullet using Roy's improvement of the 375 H&H case. This cartridge would not be as over bore as the other Weatherby cartridges are. Very interesting indeed.

 

[JD338]

bullet

The 300 gr AB (Nosler p/n 53662) has a SD of .305 and a BC of .485.
Try that BC value in your ballistics program and see what you get.
Your 375 WBY should make that bullet sing! :wink:

JD338

 

[bullet]

JD338, Yeah, you were right, 5222ft pounds at muzzle, sight in 3" high at 100yds, Zero is 250yds and -5" at 310yds with 3355ft pounds of energy left, put cross hair on top shoulder and good out to 410yds with 2875ft pounds of energy remaining. Not bad at all

 

[JD338]

Bigger is better. There is no replacement for displacement.
You have a long range hammer for sure.
If I am not mistaken, the 300 gr AB's will be out in the next 30-60 days.

JD338

 

[bullet]

JD, look at this and when you get there click on the order status button:

http://www.midsouthshooterssupply.com/i ... 0011553662