A mate of mine wanted a cartridge to go in his Martini Cadet, but he wanted to keep the barrel 'cause it has a really good bore and he wanted something with a little more punch than the .310 Cadet/Greener round had.
We discussed it for a while and he left me to it, so I necked down a .357 Magnum case, using a .303 Brit necking die, flared the mouth and seated a Hawksbury River 120g bullet.
When Dave dropped in the next day he took one look at it and was hooked.:)
No doubt it's been done before, but I can't find anything on it.
What do you fellas reckon? Look the goods?
From the left.
.357 Mag with Hawksbury River hard cast bullet.
.357-.310 Nickal
.310 original, heeled, exterior lubed 120g soft lead bullet
.310 with Hawksbury River bullet
.310 with cast .115g bullet from original .32-20 Winchester mould. ( I've yet to try this one on the target)