Well Mr. Keyser, Welcome to the 24hr campfire. I'm afraid I may have become be too much of a cynic here on the anonymous internet. I apologize for my sarcastic response about tactical lever actions (...someone actually built that thing!).
So, you're trying to get a blank picatinny rail drilled to match the existing holes on the rifle? You no longer have the B&L mount? If you are considering new holes in the receiver I would steer toward the Leupold one piece mount made specifically for odd shape of the top of the 99. But before hiring someone to drill new holes, I think you'd save time and money by checking out the "Lightfoot mount" over at the Savage collector's thread here on the 'campfire.
