I've been loading my buddies savage stevens 200 .... 300 win mag with 150 gr interlocks at 3.340... like the book says is correct...but for kicks and giggles I checked the lands with the Franklin method and got 3.470... and 3.480 with the split case/bullet method... but both are really long...why? I know there is probably a lot of throat for longer bullets, but even a 230 gr bullet is suppose to be only seated around 3.395. I know that most will say that it's the measurement for fitting in the mag... but still... why is the throat so so so long. How can you ever get near the lands.... or are you not suppose to on a factory rifle?