[12.7x99mm]

http://www.library.northwestern.edu/govpub/collections/wwii-posters/img/ww1647-46.jpg

[PATH]

That appears to be the "Boy's Anti-Tank Rifle".(British)

Length: 63.5 inches

Barrel: 36.0 inches

Weight: 36 lbs.

Caliber: .55

Rifling: 7 grooves r/hand twist

Operation: Bolt action

Feed: 5 round box

Muzzle velocity: 3,250 per second

Named after Captain Boys of the British Army who was involved with its conception. Due to advances in tank design it was rendered impractical and withdrawn from service by 1943.
The gun also had a nasty recoil which made firing it less than fun!

[MonkeyMan]

OK, I'll take a SWAG:

A .55 Boyes anti-tank rifle?:confused:

[PATH]

Give MonkeyMan a ceegar!:D

[MonkeyMan]

Thanks, PATH, make it a cuban. I've already got the Guinness so I are the ATF.:D

[PATH]

I'd like to MonkeyMan but as you know there is an import ban on good cigars as well as beautiful firearms. What a world!

[Mike Irwin]

"The gun also had a nasty recoil which made firing it less than fun!"

You can say that again. I fired one of these a couple of years ago.

I don't know what the muzzle brake was doing, but I'm not sure it was taming recoil all that much.

[12.7x99mm]

Yep thats it - Thanks.

[12.7x99mm]

found a pic but it doesnt like to be linked to - bummer. There wasnt many of them on the net