Front to firing pin well, along the bottom, was 3.250" on the Fulton. Square area (the flat) on the bottom was 2.00" on the Fulton. I think you measured the flat as 2.250" on yours, which led into the deduction that the ramp angles had to be different. Shorter flat = longer, shallower ramp area. Longer flat = shorter, steeper ramp area. No other way it can be, with those measurements, and 3.250" being the common overall length.