Thread: 200 grain cast bullets in .357 magnum cases

I think CFE BLK would be a good powder to experiment with. Never heard of it until now thanks. I haven't measured the volumes of the cases, but at a glance the 300 Blackout and a .357 magnum don't seem to be too different.

EDIT: Just checked out the Hodgdon data site. That powder seems to be ideal for subsonic loads, and the pressures quoted are relatively low. I reckon it could be the stuff to use if you can't quite fit enough Trail Boss in the case.