Mohican, sorry I offended you.But let meexplain where I am coming from.Just your wording sounded like you didn't know scoping. For leupold std bases, you have have a scope rings beavertail on front and windage adjust on back, then you have the cooresponding bases to match that. You say, "When the rear base broke it actually seperated from the scope", and then you said "base had broke on the rear base". That doesn't sound quite right. Do you mean it sheared the base screws from the action? Sheared the windage adjust screws on the rear base? When you say the rear base broke separated from the scope, do you mean, the rear scope rings separated from the base windage adjust? I have never met somone that was knowlegeable about scoping a rifle or gunsmith use your terminology. So yes I made assumptions. But if you say you know whatyour doing, its your guns.So again, sorry I offended you.