Pleasure, Homer.

I've driven normal 269gr. Lyman mould cast .375's, hardened (oven then dropped into cold tap water in a bucket), sized then lubed and gas checked at 2,800fps with 1 1/2 MOA accuracy and no leading. The rifle was my 1972 .375H&H BRNO ZKK602. I used LBT Blue lube. (via Veral Smith's little book, "Jacketed Performance with Cast Bullets")