I am considering using my (currently unfired) Marlin 336 as my back up gun this coming deer season. It is a big loop and has sort of a matte finish on the steel. When I was mounting the one piece Weaver-style base I ran into a problem. Apparently the matte finish was put on after the blind screws were put into the receiver. Three of the four blind screws came out just fine. The head on the fourth screw (one of the two middle screws) sheared in half, that is one of the half moons on the slot sheared off. I went ahead and mounted the base with the three other screws, using loctite blue. My reasoning: There have been some one piece bases with only three screws that have worked just fine on more heavily recoiling rifles. It would be interesting to know if anyone else has run into this problem. I have mounted a Leopold 2.5x scope with a heavy duplex, figuring it would do a bit better in lower light and in the brush. I am planning to use the 160 gr Leverevolution factory ammo. As someone observed in another thread, this turns it in to a 308-lite.