This job was never intended for one guy to do. That's why even though I like using manual targeting I still have the weapons officers help. I believe that is more realistic even though it ranks lower on the realism settings.
I still do my own calculations but check it with the weapons guy. When I get info from him I do a quick double check to see if I agree. What you need is to speed up your calculations. The most time consuming calc is the AOB. I use a handmade AOB slide rule made out of cardstock. I think one of the sticky notes tells how to make it.
SH3 Newbie Guide, Links and other helpful stuff