The .250-300 would be ok...but really hard to find ammo for...and well hard to find any rifles chambered for it...they stopped producing them awhile back.
Actually the 22-250 ammo is really easy to find. You can buy it at Wal Mart or Canadian Tire here in Calgary/Airdrie. It isn't cheap though as has already been said.
I have more trouble finding .223 actually, because a lot of it is going overseas to the military boys in Iraq and Afghanistan. All the same there is still lots of .223 in the actual gun shops for cheap, and you can reload it easily like I do, because I like to shoot 60 grain hollow points instead of the little stuff you can usually buy. I just buy new for the brass.























































