Poses the interesting question: If they dug that (Korean) hole any deeper, would they end up in China?
David, the range of the shell is a function of the angle of the barrel and the Muzzle Velocity of the projectile. There are a variety of Projectiles available for the 25pdr, and each of these have varying weights which affect their MV. The 25pdr (and many other Field Artillery pieces and Naval guns) has the infinitely useful ability to vary not only the angle but also velocity by the use of multiple charge bags of propellant, being Charge 1, Chg 2, Chg 3, and Super Charge. The normal range of the 25pdr is between 100yds and 13,500yds, depending on the charge and elevation, but sorry to say, an elevation as shown does NOT appear in the Range Tables, but I'm sure Herb or Gunner would tell us it would be quite feasible for a switched-on GPO to calculate using MV, angle of barrel, height difference between gun and target, etc.
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