Howdy All,
Purchased DCS:CA last night and oh boy this is going to be good

Being a little thick, I'm already having a couple of questions. SimHQers, please be kind:
First thing I did was jumping into an M1A2 and sneaked a little close to some juicy ground targets. But then - but not always - upon firing my main gun in anger I get the expected lound bang, the grey smoke obscuring the sight and, nothing
No explosion short or beyond my target. As if I had fired a blank for cool effect to impress the girls.
Is this normal? Could it have anything to do with ammo type? Armour piercing may not do much pyro when hitting the ground but if so, how do I know if I'm short or long?
Also, giving ground units orders to move forward via waypoints. Can do ok, but shouldn't I be able to assign targets to them? How to do so?
Is there anyway to dump some smoke screens? Would be handy in my frequent retreats.
Downloaded a 16-pages PDF manual. Is that it for the time being?
No access to YouTube since it's full of pro-Taiwanese independence propaganda apparently. Quite irritating and not helping me in grasping the Hog and now CA...
Cheers,
Slug