340 Weatherby "ITS MINE NOW!!!" OH YEAH!!!

[carpsniperg2]

Was wondering if anyone is running one. I found one that is a good deal. I am just playing with the idea. But wanted some feedback on the cal. I know the basics, based on the 300wby necked up to the 338 take the .338 bullets. Have looked at load data, brass is pretty fair price, for a wby Bullets from 160-300grains, Just like the 338 win mag. Seems like from what I have found is you gain about 100-200fps over the 338wm with the 340wby. It is a gun with the larger bullets that is plenty enough for Africa and all other animals in between. With the 340wby I can shoot a 180grain bullet at 3400fps/225grain bullet at 3000fps/300grain bullet at 2600fps. Seems like a great gun to chunk big bullets and also be a very good long range cal with the lighter bullets. Sighted in 1" high at 100y its only 32" low with the 185g Barnes.

I have been looking into another long range gun. My 2 picks so far have been the 300rum and 30-378. Yes I reload everything! So when I found a gun I like the looks of, and at a fair price in the 340wby. It has got me to thinking. I would love to hear more feedback on this cal. As well as thought about it compared to the other picks I have.

Thanks Carp...

[sakoshooter]

Buy it. I'm not a Weatherby fan but the .340 is a great caliber especially if you hand load. I shoot a .338 for elk etc. The .340's a hair quicker. You need a new gun.

[carpsniperg2]

I always need a new gun I just picked up a 338wm last year and really like it a lot as well.

[Curly]

Why would someone pic a 340 Wby over a 338 RUM?  Serious question.  Seems like RUM brass would be less expensive, but ballistics has got to be about the same or better with the RUM.........

[buckhorn2]

There is a web site called american guns and you can click on rifles and the make and find all kinds of guns. I bought a 22-250 super varmit master weatherby on there last week and had it in like 5 days shipped to my local gun smith. They had stopped production on it but I looked for ever and finally found it on here. Mine came fron a dealer in Iowa called Bromleys he had a lot of weatherbys on there and prices.

[carpsniperg2]

Why would someone pic a 340 Wby over a 338 RUM?  Serious question.  Seems like RUM brass would be less expensive, but ballistics has got to be about the same or better with the RUM.........

Here is the difference between the two curly. The 340wby has better ballistics then 338rum.

Brass:
340wby 2.00each
338rum 1.20each

340WBY-250g nosler part    100y+1.6/300y -6.9/400y -20.0/500y -40.4
energy                               4176         3120        2678        2286
fps                                    2743         2371        2197        2029

338 Rum 250g nosler part    100y+1.7/300y -7.6/400y -22.0/500y -44.7
energy                               3888       2807          2363         1977
fps                                    2647       2249          2064         1887

[MDGrand]

From what I have researched, the 340 weatherby is actually a better preformer from an accuracy standpoint than the 300 weatherby. I think the extra diameter of the bullet does better with the freebore that Roy put together.

If you really want a great expert opinion on it, call Dan Cowen.. Riflesmith in Renton. GREAT guy and REALLY knows a ton about well, all rifles.

If you are looking into another Long Range gun then I would also look into what BC you can get out of each caliber. I almost went 338 Lapua, then found I can reload a 300 RUM with 210 Bergers with a BC of 0.63.. they shoot 1" MOA out of my rifle.

I do not know if I woudl go 300-378.. That is just a TON of power for such a small 30 caliber bullet.

 

[carpsniperg2]

Agree! It is a ton of power! On a 30 cal bullet. its just crazy that you can shoot a 180g bullet sighted in 1" high at 100yards  and only be 27" low at 500yards Thats pretty sweet right there! Which is about 8" less drop then 300 rum with the same bullet.

[MDGrand]

Yea.. the cartridges are pretty scary looking too. I assume if you are thinking 300 378, you are looking at the Accumark? That is the only rifle I know chambered for it from the factory.

[carpsniperg2]

No, I won't by from weatherby anymore. I got into it with them one day and said no more. I will buy there guns used but not new. One of my fave guns is a weatherby CFP. This rifle will more then likely be a custom built rifle. That I end up with, no matter what cal.

[MDGrand]

Well, if that is the case.. then I would go with the 300-378.. although you will have to go with a muzzlebreak, which I am not a fan of.. but on its own a rifle like that would just kill a shoulder.

on another note.. do they make aftermarket muzzlebreaks that can be turned on and off like the muzzlebreak that savage offers?

[Curly]

Why would someone pic a 340 Wby over a 338 RUM?  Serious question.  Seems like RUM brass would be less expensive, but ballistics has got to be about the same or better with the RUM.........

Here is the difference between the two curly. The 340wby has better ballistics then 338rum.

Brass:
340wby 2.00each
338rum 1.20each

340WBY-250g nosler part    100y+1.6/300y -6.9/400y -20.0/500y -40.4
energy                               4176         3120        2678        2286
fps                                    2743         2371        2197        2029

338 Rum 250g nosler part    100y+1.7/300y -7.6/400y -22.0/500y -44.7
energy                               3888       2807          2363         1977
fps                                    2647       2249          2064         1887

The load data that I looked at shows the RUM at about 2,900 fps........    The 338 Win mag can get around 2600 or so with the 250 gr.

[dscubame]

I love my 30-378 with one exception.  I do not reload so I may be mistaken but I have heard people say the powder weatherby uses in the 30-378 cartridge is proprietary and not available to purchase with no other powder being able to match its performance.  It is for that reason I have heard that folks who reload would not be interested in the 30-378 due to not being able to load to the factory load performance.  Maybe I am way off base but my understanding none the less. Maybe two exceptions with the second being the 10k price tag because this was not a off the shelf 30-378.
Dan

[bobcat]

Looking at Hodgdon's reloading data, they show the 338 RUM at about 150 to 200 fps faster than the 340 Weatherby.

[C-Money]

Why would someone pic a 340 Wby over a 338 RUM?  Serious question.  Seems like RUM brass would be less expensive, but ballistics has got to be about the same or better with the RUM.........

Here is the difference between the two curly. The 340wby has better ballistics then 338rum.

Brass:
340wby 2.00each
338rum 1.20each

340WBY-250g nosler part    100y+1.6/300y -6.9/400y -20.0/500y -40.4
energy                               4176         3120        2678        2286
fps                                    2743         2371        2197        2029

338 Rum 250g nosler part    100y+1.7/300y -7.6/400y -22.0/500y -44.7
energy                               3888       2807          2363         1977
fps                                    2647       2249          2064         1887

The load data that I looked at shows the RUM at about 2,900 fps........    The 338 Win mag can get around 2600 or so with the 250 gr.

Was that 2900fps at 100 yards?