Wow. Thank you parashooter. That makes it significantly easier than I anticipated. Do you have any more of those graphs that would show trajectory for 3" above POA at 100 yards for the same ammo. Even better would be interactive so you could drag the trajectory to allow for your 100 yard Zero. just to check, but is there ANY reason the same would not work for a No.1 Mk 3 if I used on of those instead?