Purpelia wrote:The New California Republic wrote:The baseline drift at 39,600 yards is 1,756.8 yards, so at 45km, which is about the range that he wants to engage at with the slightly extended range weapon he has in mind, which is about 50,000 yards, the drift will be ~3,000+ yards roughly on the basis of the increase of those figures. Coupling to that the additional deviations on the basis of other factors and you may as well say a prayer before you fire the salvo, as only the hand of God will put the shells anywhere near an OTH moving target.
I am just endlessly amused by the notion of expressing your CEP in units of battleship.
Drift has nothing to do with CEP. It's caused by gyroscopic force in the direction the shell is spinning and is a known quantity that would be input into a fire control solution. This is why this kind of stuff is listed in a range table.
Mean dispersion of a good WW2 battleship gun would be about .5% of range. At 45km this is a probable error of 190m.