505 Mag. Gibbs

Woodleigh PPSN 600 gr
39 g / 600 gr
Ballistic coefficient

Woodleigh PPSN 600 gr

Woodleigh PPSN 600 gr
Product number


V0 640 m/s 2100 f/s
V50 606 m/s 1998 f/s
V100 573 m/s 1899 f/s
V150 542 m/s 1803 f/s
V200 511 m/s 1711 f/s


E0 7966 J 5877 ft.-lb.
E50 7142 J 5319 ft.-lb.
E100 6389 J 4805 ft.-lb.
E150 5705 J 4334 ft.-lb.
E200 5087 J 3904 ft.-lb.


Winddrift in mm for a 5 m/s cross wind

Winddrift in inches for a 10 m.p.h cross wind

Zero range, meters

Height of trajectory above line of sight if sighted in at X meter. For sights 40mm above bore

0 m 50 m 100 m 150 m 200 m
-40 13 -88 -259

Sighting distance in yards

Height of trajectory above line of sight if sighted in at X yards. For sights 1,6 inch above bore

0 yds 50 yds 100 yds 150 yds 200 yds
-1.6 0.3 -2.7 -8.1


0 m 50 m 100 m 150 m 200 m
24.900 23.600 22.300 21.100 19.900

505 Mag. Gibbs

This cartridge was developed by George Gibbs of Bristol in 1911 and originally intended for use in double rifles, but somewhere along the road he changed his mind and turned it into a rimless round for use in magazine rifles, for which there was a flourishing market. The .505 Gibbs is a highly specialized cartridge intended as an elephant stopper for hunters who prefer a magazine rifle for this purpose. It is one of the old English big bore cartridges, whose reputation far exceeds its actual use It was made famous by Ernest Hemingway in his short story “The Short Happy Life of Francis Macomber” and the famous John A. Hunter also preferred a .505 for hunting elephant.

Actually the first rifle of this caliber was finished by the Gibbs company in 1914, and the first world war delayed the production of further rifles until 1919. Accordingly it reached the African game fields at the very end of professional elephant hunting and never became widespread.

It is not only equal to but exceeds the power of its rimmed cousin, the .500 Nitro Express. In European nomenclature it would be called 12,8x80. A 525 grain bullet propelled at 2300 fps gives an awesome recoil and rifles necessarily have to be heavy to reduce this to a tolerable level.