For anyone unfamiliar with the Rigby Rising bite following are a few shots of it both open and closed. Rigby are currently re-introducing the rising bite rifle and had their first production model at the Safari Club this year, it was being stocked whilst at the exhibition.
The rising bite 'for and against' discussion is an ongoing one. The Rigby purists and enthusiasts believe it is the "Holy Grail" of top fastening systems, others believe it was dropped in preference to the dolls head when the larger and more powerfull nitro express cartridges in .470 and larger became more widely used. No doubt time will tell, now that new rifles are being made in this format. We will find out if it was dropped for strength reasons or just because it was too difficult to make.
The .256 Männlicher ( 6.5 x 53mmR ) was a military bottleneck cartridge in service in the Netherlands from 1893 - 1945. It sent a 150gr bullet at 2433 ft/sec with 2050 ft/lbf energy. 'Kiramojo' Bell was a great admirer of the round and used it in the rimless format to take over 300 Elephants. Whilst Bell is commonly associated with the 7 x 57 or .275, the 6.5 was actually his preferred cartridge.