Spleify,
As I mentioned earlier, I have the old version Ruger (mid-70's) and the 6.5X20X50 scope with the 30mm tube (and I love the scope and the rifle). I just measured the mounts, just in case you want or need some info a bit more specific than "medium", "high", or "super high". The front mount, measured from the highest point of the action to the bottom of the scope tube, is 5/8 inch. The rear mount, measured the same way, is 3/4 inch. With the scope set for the eye relief I like, there is a gap between the objective bell and the barrel of approximately 1/4 inch. That can vary as you move the scope forward or backward in the rings. I have a sporter weight barrel. I think, though I'm not absolutely positive, that there'd still be a gap between scope bell and a bull barrel. I hope that helps. The only potential problem with the info I've provided is that a seller of the mounts, holding them loose in his hand, as opposed to having them on a rifle, might not measure them the same way I did.