Oh please. what is the max effective range on your 165mm gun? Can't be more then 1000m. I can stand off at 1500m and pump u all day long with APFSDS rounds. I can get off 12 APFSDS round in 2 minutes. And a .5in machine gun can't penetrate an AMX-13 SM1. Not even using AP rounds. u can try a 20mm against the AMX-13........ but oops, u don't have one, do u?