What's an Autoloader Anyway?

Falathi:  True, but I assume there are reasons behind it: AA guns were usually in open positions, with relatively simple feeding mechanism and if they jammed they could be fixed relatively easily. Of course - much depends on which gun in particular we`re talking about but as a rule this was not a big problem. Also, smaller caliber AA guns ( like up to 37-40mm ) were usually fed with clips or drums which is a bit different story than the 75mm and larger caliber guns. Which leads to another thing - the big naval guns. These weren`t loaded manually in any case as the shells were way too heavy for it (to give a general idea: 150mm shell already can weigh around 40-50 kg without the propellant. 203mm shell gets closer to 100kg, and battleships guns go for hundreds of kgs. However, the mechanisms used to few them would be difficult to put into a tank as they operated in a different way, with sort of elevators lifting the shells from the magazines, then there was a mechanism to put the shell on a cradle, next thing was the use of rammer to place the shell in the gun and so on - but all this would take a ton of space inside of a tank and would require a complex crew to make sure it works correctly.I assume that parts of this mechanism were taken into consideration ( for example the pretty much automated 203 mm guns used on the Des Moines class ) but much had to be reworked to adapt the idea for a tank. Keep in mind, that - for example - in the naval gunnery the height of a turret was not a big issue as it was several meters tall anyway. In case of the tank you can`t simply make it as tall as you with to fit your fancy mechanism in. I guess there were for other, similar issues as well.