I have a '68/'69 L461 with the above "low" rings. They limit the ocular lens to about 1.4" outside diameter in order to clear the bolt handle when opened. So, I think I would stick with the mediums (or high if you have a scope with a large objective). To mount a larger scope, I found some Leupold rings, probably on ebay. By the way, I looked at pictures of L46's on line and the mounting system look identical to the L461. Hope this helps.
