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A Big Fella
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Anyone heard of these; A friend found a case that looked just like a 50 BMG, Except it had a belt. The base dia seemed the same as 50 BMG, and was rimless, but the neck was expanded to maybe about .577ish. It also seemed to have a Mil type base stampings.
 
Posts: 2355 | Location: Australia | Registered: 14 November 2004Reply With Quote
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British 55 Boys (Boyes) rifle AKA the 13.9x99B (vs the 50 BMG AKA the 12.7x99).
 
Posts: 2123 | Location: Whittemore, MI, USA | Registered: 07 March 2002Reply With Quote
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Thanks Tailgunner, I'll pass that on.
John L.
 
Posts: 2355 | Location: Australia | Registered: 14 November 2004Reply With Quote
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J.d. Jones, of SSK industries make a 50 bmg, necked out to a 585 bullet. He calls it a 14.5mm. It uses an 1173 grain boatail bullet. The case has ho taper and a much sharper shoulder than the 50 bmg. You can get 2850 ft/sec with the 1173 grain bullet. It is a blast to shoot.
 
Posts: 929 | Location: southern illinois | Registered: 29 July 2006Reply With Quote
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Bigdoggy
The big clue is that he said it's a BELTED case, all but two of the military headstamped cases (that I know of) in this size range are rimless. The 2 exceptions are the WW-1 German 13x92R (rimmed) and the 55 Boys/139x99B (belted)

If I was a betting man, I'd wager that in his headstamp is a "K" for Kynoch followed by the year of manufacture at the 12 o'clock position. Any letters/numbers at the 6 o'clock position indicate the original loading of that case.
 
Posts: 2123 | Location: Whittemore, MI, USA | Registered: 07 March 2002Reply With Quote
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My "man" is the exectutor of an estate, bought said case, and a live 505 Gibbs around to show me, and now has misplaced both. If ever he finds them I'll record the headstamp and let you know. Thanks again.
 
Posts: 2355 | Location: Australia | Registered: 14 November 2004Reply With Quote
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Yes, Tailgunner is on target again. (or still)

The case has "K" and "41 or 47" at the top, and
"W II" at 6 o'clock.

Thanks again. John L.
 
Posts: 2355 | Location: Australia | Registered: 14 November 2004Reply With Quote
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