The A-Square Manual: pg. 598, 1996 first and only edition

Contributor Craig T. Boddington gets credit for this item about the .500 Jeffery:

"Original ballistics were a 535-grain .510-inch bullet, propelled by 95 grains of Cordite for 2300 fps and nearly 7000 foot-pounds of energy. This is pretty impressive ..."

Yes indeed, very impressive, since Alf says the 500 Jeffery was never loaded with Cordite, having sprung forth as late as 1928 with German flake powder loads.

Where the heck did CTB come up with that Cordite load for the 500 Jeffery?

How about the claim that Art Alphin and Dave Manson "re-standardized" the orphaned 500 Jeffery using a drawing from 1928?

The shoulder semi-angle is 20 degrees according to A-Square, circa 1996.

The Kynoch 1928 shoulder semi-angle was supposed to be 12.63 degrees.

Romey 1997 "Hybrid": 19.97 degree semi-angle (so close to Art's angle)

RWS 1940 12.7x70mm Schuler: 23.54 degrees semi-angle

1998 plenary session of CIP: Whatever. A-Square was claiming to be the governing body for the 500 Jeffery in 1996.

I sure would like to know where Craig got the Cordite load data for the 500 Jeffery. A figment of his imagination? Say it isn't so!

Was there never a Cordite load for the English version of the 500 Jeffery? Those Brits could be odd enough to do something like that. Is it not conceivable?

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Taylor says that .500 Jeffery ammunition was only available from Germany. He gives the load as "Powder 95(?) grs. Smokeless; Bullet 535-gr. Metal-covered; Pressure 1`6 tons; M.V. 2,400; M.E. 6,800."

Source: African Rifles and Cartridges, p.86

jim

Surely someone here has Craig'e email or phone no. and could ask him.

Fleming also lists 95 grains Cordite, which is probably where Craig got it.

I doubt Craig pretends to be a scholar on this stuff. I seem to recall that he got the introduction date of the .470 wrong as well.
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"Serious rifles have two barrels, everything else just burns gunpowder."

Thank you gentlemen and scholars.

Kynamco in UK now makes it...

quote:

Originally posted by reddy375:
Kynamco in UK now makes it...

But not with Cordite, I trust.

Craig must have been quoting an erroneous source.

Easy to do. I have been guilty myself, at least once.