Ages ago, the 60s, I was a Field Artillery Gunner on 8inch howitzers with a side function involving nuclear weapons. That is how I found this forum.
All that aside, I later got a PhD in Computer Science and worked in Computer software, databases and GPS, until I retired. I'd be happy to answer...
A consideration that I have not seen mentioned is useful life of the barrel. At some point the gun becomes less accurate because of wear on the barrel and the gun should be removed from service to have its barrel replaced or refurbished. Detailed records of use of the gun are kept in order to...