I have a Browning X-Bolt in .375H&H, I was attempting to mount a Leupold VX-3 2.5-8x36mm scope on it but the bases are just barely too far apart for the rings to be on the level part of the scope. A guy at the gun shop said I should look for other bases but I think I'll have to swap the scope. My question is: Is there a way to know if a scope will fit without putting it on the rifle? Thank y'all for any advice.