I recently purchased a 4-12X40 scope for my Savage 110 .30-06, only to find that the scope tube is about 1/2 an inch too short to fit in the rings (the old scope was a 3-9X40 with a longer tube that just barely fit). I know that Leupold makes STD mounts with extension rings which offer about 1/2 an inch longer or shorter adjustment, but I can't find any bases that are made specifically for my rifle. Does anyone have any experience with the STD mounts (2-piece, not the 1-piece) on a Savage 110 post-AccuTrigger?