I posted this on the British Arms forum but thought I would here too in case anyone is interested.

Midway has .303 British milsurp ammunition for sale. Its packed 250 rounds in an ammo can. In order of quality: U.K. non corrosive ball $180.00, UK WWII corrosive ball $150.00, POF corrosive ball $140.00. Shipping is $15.00 which I figure just about covers the cost of the ammo can.