i have read the sticky on measuring the height of the rings and bases to find out if its gonna clear your scope, but my problem is i dont have the rings or bases lol. I have a Howe axiom and that barrel does not taper from what i can tell. Im gonna be getting a egw base and burris xtr rings but im not sure if i can get away with low. I have heard people say that if its a 40 lens then low will work... the monarch is 42. So im thinking i might have to move up to med rings. any advice would be awesome, thanks