I would like to mount a scope (3x9) on a 303 Lee Enfield. It has no collector value. The rifle has not been drilled for a scope. What is the best base to use? I am in Canada, what is the best source for the base? Thanks

Assuming you have a No. 4 Lee Enfield, this will work:

http://www.brownells.com/optics-mou...d-no-rings-sku794001045-12461-29491.aspx

If it is a No. 1, then this should work:

http://www.brownells.com/optics-mou...-weaver--sku794-001-111-12461-29495.aspx