Hi LE,
I use a mold from Accurate Molds for my .303 British Ruger #1.
It is the 31-220BG
It casts great bullets right at 220 grains when using wheel weights with 2% tin added to the mix.
They can be contacted at the following website:

http://www.accuratemolds.com/index.php

All molds are custom made to the purchasers request, price is vey reasonable and lead time has always been quicker than promised.
I own several and will continue to use them for all my mold needs.

Good luck,