Personally, I'd leave it .303 British. Of course, I grew up on one of those, so I'm completely biased 
Yeah, a while ago I was wondering if Wholesale Sports would be willing to do a special run, but I couldn't think of a great "Canadian" caliber to use. Using the .303 was the brain child of a man from another forum, and I thought it was an AWESOME idea!I'm impressed that you're even looking at a .303 to begin with!