The three section hexagonal mould pictured is a Leo Krannen, I have one and it is indeed a fine mould.
However the Whitworths shoot just as well with a cylindrical bullet which makes hexagonal holes on the target.
The Lyman 457121PH is claimed to be made for the Whitworth but I get better results with the Lyman 451114 cast with plumbers lead and a smidgeon of tin. 70 gns of Swiss No 3 ffg, a card wad and the sized 0.451" and BP lubed bullet, it should just slide down the barrel under the weight of the ramrod alone, cap and shoot. Any lack of performance after that is operator error.
The originals were swaged.
However the Whitworths shoot just as well with a cylindrical bullet which makes hexagonal holes on the target.
The Lyman 457121PH is claimed to be made for the Whitworth but I get better results with the Lyman 451114 cast with plumbers lead and a smidgeon of tin. 70 gns of Swiss No 3 ffg, a card wad and the sized 0.451" and BP lubed bullet, it should just slide down the barrel under the weight of the ramrod alone, cap and shoot. Any lack of performance after that is operator error.
The originals were swaged.