Hello Stonewall,
This isn't to helpful concerning your Leo's, but I use a weaver base with Warne Maxium Medium Height quick detach rings. It is super solid. I'm using this setup with the same scope, a 4x40 Nikon Monarch and the clearance is perfect. The rings come off easily and you can use the fiber optic iron sights with no problem while leaveing the base on. I'm really impressed with the Warne Maxiums. I've got another pair I use for a 30mm scope in medium height and I really like them (42 objective clears as well). They are heavy when you compare them to other rings however if that is an issue.
The medium height works fine for me with thin gloves, but I'd go with a high if you plan on using thick gloves. With the mediums I can get a good weld to keep me steady and the scope is closer to the barrel.
Hope this helps,
JCM