Spike Camp

How about a 264 Weatherby magnum?

How about a 264 Weatherby magnum?
« on: September 12, 2007, 08:01:33 AM »
I wonder what would be the result of necking up the 257 Weatherby magnum to .264". Has anybody (including Weatherby) tried this? Does the velocity increase or decrease from 257WM velocities with bullets of the same weight and/or SD? Are there any real advantages to the .007" increase in bullet diameter? Might there be a market for such a round?

I'm on a "6.5mm kick" this fall and just had this idea. Thanks for all replies.
Live well

dubyam

  • *****
  • 4765
    • View Profile
Re: How about a 264 Weatherby magnum?
« Reply #1 on: September 12, 2007, 09:39:04 AM »
I don't know whether there is enough difference between the 257Wby and the 270Wby to warrant a .264 offering.  It is interesting to think about, and might be better served to be a full length offering, kind of a 264-300Wby, which would put it in the same class as the 7mmSTW, and a bit ahead of the 264WinMag, I believe.  Barrel life would be somewhat abbreviated either way, I'm afraid.
« Last Edit: September 12, 2007, 12:07:20 PM by dubyam »
I believe this is a practical world, and in it I can count only on what I can earn.  Therefore I believe in work, hard work. - The Auburn Creed
The older I get, the less stock I place in what men say, and the more I place in what men do. - Andrew Carnegie

Re: How about a 264 Weatherby magnum?
« Reply #2 on: September 12, 2007, 11:57:01 AM »
Hi, a friend of mine has a custom build rifle in "264 Weatherby Magnum" (Or we can call it 260Wby or 265Wby). Due to hunting regulations in Norway, you are not allowed to harvest big game (moose, caribou and elk) with a bullet weighting less than 139grs. This makes this wildcat a powerful minimum caliber on big game. The 257Wby is only legal on small game. I have hunted with him in Africa with this rifle, and it performed excellent on plains game. If my memory serve Me correct, I believe that he got 3100fps on a 140grs bullet. In the old days, Weatherby chambered the MK V in 6.5x68!

Weatherby, Symbol of Superiority!

Mike

Re: How about a 264 Weatherby magnum?
« Reply #3 on: September 12, 2007, 08:17:50 PM »
intriguing topic, but I dont think there is enough dif between the 257 and 270 wby. and when you look at factory ballistics the 264win is ALMOST as good as the 270wby so its hard to improve on something that is already almost as good as a weatherby.
Ahh...the smell of Nitro in the morning.

Re: How about a 264 Weatherby magnum?
« Reply #4 on: September 12, 2007, 09:20:29 PM »
The cartridge I believe Weatherby should try to ignite more interest in is the 240 wby mag. I have a Ruger Tang safety version with a 26 inch douglas barrel on it, and it is a screamer. I ve taken several CA wild hogs with it, and consider it an excellent choice for mule deer on down. I'd love to see a Vanguard come out in 240 wby, also 270 wby for that matter.

Re: How about a 264 Weatherby magnum?
« Reply #5 on: September 13, 2007, 04:26:42 AM »
Herb Klein had a 264 and a 284 weatherby mag built on the 300wby case.


Cheers

Re: How about a 264 Weatherby magnum?
« Reply #6 on: September 13, 2007, 04:33:07 AM »

Re: How about a 264 Weatherby magnum?
« Reply #7 on: September 18, 2007, 08:11:50 AM »
If you read a lot of the shooting and hunting magazines, they say that the 6.5mm bullet never took off in the USA.  When the .264 Win was introduced, it was called a barrel-burner and the 7mm Rem mag ended up running the show.  My father and I have 3 .264 Win mags between us.  He loves his and I'm getting ready to do some range work with mine.  Layne Simpson has a 6.5mm STW that he loves and is a rocket.  I think it uses the max amount of powder you can use with that caliber and bullet weight.   I don't think that Wby would introduce a caliber that hasn't caught on with the rest of the shooting world.  (That doesn't mean that I haven't thought about it, too...!!!) Good Shooting...!!!

Re: How about a 264 Weatherby magnum?
« Reply #8 on: September 18, 2007, 09:16:15 AM »
Hmm... I have also read that the press claimed that the 264 was a barrel burner. But, this is just nonsense in my opinion. If this was the issue, why is not a 257'en a barrel burner? The good news with a 264 slug is high BC and SD. Check the 140grs bullets. It will be a flat shooting rig for medium sized game. I once tried a 264 Winchester Magnum in SA. It have been used for culling in 20+ years. How many rounds it had through the tube is impossible to tell, but it still grouped 140grs loads under 1" @100 yards.

Weatherby, Symbol of Superiority!

Re: How about a 264 Weatherby magnum?
« Reply #9 on: September 18, 2007, 12:11:17 PM »
Extreme barrel life is not the issue with every shooter, much less shooters of magnum calibers. If it was, we would all stick with standard chamberings. Overbore magnums are about extreme performance. If I could get 1000 good shots from a high-performance magnum barrel, it will certainly last the rest of my life, and probably my grandchildren. When the barrel is shot out, install a new barrel. Not every shooter shoots thousands of rounds in a year.

In all my experience I have only seen one barrel that was unquestionably shot out. This was a Remington 30-06.
Live well

Re: How about a 264 Weatherby magnum?
« Reply #10 on: July 09, 2018, 07:09:01 AM »
intriguing topic, but I dont think there is enough dif between the 257 and 270 wby. and when you look at factory ballistics the 264win is ALMOST as good as the 270wby so its hard to improve on something that is already almost as good as a weatherby.
I have the 6.5-300 weatherby awesome caliber way to go ADAM WEATHERBY FOR FINALLY REALIZING JUST HOW GOOD THE 6.5 IS.TGIS IS TRULY A BIG GAME ROUND ,,,,THANKS WEATHERBY