Evil Dawg -
This is a question that will sort out those that care about hitting something and those that just like to shoot!
With rifles, I like single shots. Take 3 to 5 shots, walk 100 yars out there and check the target, mark the group, and walk back.
With full-auto, after about 400 rounds (each) we MIGHT look at the target.
So this is a revaling question, sorting out the thrill seakers from the accuracy nuts.
After getting over the thrill of clearing the mountain behind the range (sorry DD) and figuring that wasn't a behavior that should be repeated, I was happy with just listening to 7-1/2 pound chunks of concrete rip limbs off trees behind the range (but not behind the mountain behind the range).
Now you talk about AIMING! DD posted some pictures a while back on sights on cannon.
Yes, I do, on occasion, measure the angle of elevation, with either a gunner's quadrant or with a carpenter's level with a magentic base.
Yes, on occasion I use a plumb bob to align the tube with the target (when using the 4.5" or beer can caliber mortars).
BUT, with the golf-ball caliber "hand gonne" it's just kinda pointed over yonder - and hope that someone watching notes where it went - because all I see is a wall of smoke!