I am having a hard time finding a base for this action. I need a 20 or so MOA rail for my new 6mmbr build. The rifle was an early Weatherby Vanguard Deluxe. Short action with the Sako type bolt release on the left side of the action. Doen't seem to be like the Howa. Here are the C/L measurements from rear forward on the mounting screws. 1~2 = .860" 1~3 = 4.765" 1~4 = 5.365" Any help or direction would be appreciated. Jeff .