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BB Bertram Bullet Co. Pty. Ltd. (1986–present) – Seymour, Melbourne, Victoria. Bruce Bertram bought Super Cartridge Co.'s machinery and moved it to Seymour, where he began manufacturing brass cases for handloaders. The "BB" is at 12 o'clock and small kangaroos are positioned counter-clockwise at 3 o'clock and 9 o'clock.
Extraction of cases that have been loaded to higher pressures can be difficult due to the inefficient extraction method utilised by the Martini Cadet. Cases and loaded rounds were originally produced by the Super Cartridge Company. [3] Brass is now available from the Bertram Bullet Company [4] or can be made from 5.6x50mmR RWS cases. [2]
The pre-war headstamp has the 1- or 2-letter code for the brass supplier of the cartridge case at 6 o'clock, the 2-digit year the cartridge case was produced at 12 o'clock, the lot number of the propellant at 9 o'clock, and the 2-digit year the finished cartridge was assembled at 3 o'clock. The brass suppliers or cartridge manufacturers would ...
The .338 Xtreme cartridge (or .338 XT for short), is based on a necked down .505 Gibbs cartridge case with a sharper 35 degree shoulder angle. Introduced in 2008 by Xtreme Machining of Grassflat, Pa, [1] the cases, commercially produced by Bertram Bullets, have a length of 3.030" and a head diameter of 0.640".
Those still using the .310 Cadet have to either buy cases to reload, by Bertram Bullet Co. in Victoria, Australia, or several small independent ammunition makers in Australia and the United Kingdom. However these new .310 Cadet cases are 3-4 times as expensive as new .32-20 Winchester cases, hence shooters modify .32-20 cases, as a cheaper ...
The .577/450 Martini–Henry is a black powder, centrefire rifle cartridge.It was the standard British service cartridge from the early 1870s that went through two changes from the original brass foil wrapped case (with 14 parts) to the drawn brass of two parts, the case and the primer.
They initially used the .375 Ruger for a parent case, fireforming the brass cylindrical and threading the bases for rims. The result was a cartridge that is essentially a lengthened .500 S&W Magnum. New manufactured brass is now produced by the Bertram Bullet Company. [8]
The 7×33mm Sako cartridge was created in Finland in 1942 as a small game cartridge for animals such as the Capercaillie and Black Grouse.It is based on a 9×19mm Parabellum case that has been lengthened and necked down to accept a 7.21 mm (0.284 in) bullet. [1]