A few years ago, I started a project to restore a Francotte Martini Cadet in 297/230 Morris Long. It originally came with no fore end, barrel bands etc. Needless to say, manufacturing was the only way to obtain a replacement was to make that. It is located, somewhere in another thread.
Part of the restoration included getting Alan Swann to reface the bolt face. The chamber shows some sign of pitting toward the case mouth end. Apparently this is common amongst Morris chambered cadets. So I created, artfully, some Morris short and long cartridges, using some CH4D dies.
Finally, this is topped off with a CBE cast pill, designed specifically for this round. It casts a heel based 228ish pill, at 41gn, with one grease groove. They are cast in soft lead. Tonight I finger lubed ten pills, and hand seated them over some magnum loads. 1.5gn of 2205 for the short, and 3gns of 2205 for the long. That is a case full!! Projectiles were finger seated.
Tonight, for test of function, I test fired into a ten litre jug, and recovered the pills. All pills bumped up to bore diameter, and not surprisingly, none exited the 10 litre jug. AWESOME POWER.
What surprised me is the amount of deformation of the Morris longs!