.338-50 Talbot

[PrimeTime]

Has anyone seen or tried this cartridge? The ballistics are pretty impressive but of course you'd have to have a massive action and lots of powder. It really seems like that would shoot as flat as anything out there. The 300 MK would smoke!

Is it legal to use the standard 50 BMG? With the right bullets, the range with one of those seems practically limitless. My information says it propels a 660 grainer at just over 3,000 fps!

[Darryl Cassel]

Hello

I hope I'm responding to a 338 caliber bullet in a full length 50 Cal case?

I had the chance to try a 338/50 and found out it didn't do anything better then my 338/416 Rigby Imp.
As a matter of fact, it didn't do it as good.

The overbore capacity of the big 50 cal case and necked down to a .338 just didn't have it especially with the 32" barrel that was on the gun.

If you could put a REAL long barrel on the rifle and use the shorter "spotter" 50 cal case, it would be much better. I also tried one of those and the outcome advantage, still went to the 416 IMp case.

Compare it to a cartridge that will produce better velocity with LESS powder capacity.
Effecient, the 50 caliber case necked to a 338, is not. Just because it holds more powder doesn't mean it will elevate velocity.

Been there, done that.

Darryl Cassel

[Warren Jensen]

Primetime,

Darryl's right. To take advantage of the expansion ratio of a 338 necked down from a 50 BMG you would need powders slower than any that are available to the reloader.