Nice looking BB mortar.
An older Navy Master Chief once told me "If you feel the urge to run, your fuse is too short".
At 550 lbs how the hell do you position the thing?
Good advise from the Chief! Actually, in this case I was running for my camera to get some video.
We have been shooting it at my cousin's farm where we're lucky enough to have a Bobcat with forklift. I'm planning to make up a ramp that will get it up into the truck; I'm going to need a winch of some sort too. It rolls around pretty well on some short lengths of 3/4" pipe. It makes my little Mazda PU squat a bit but I hauled them both back from Idaho to Minneapolis with no problem. Two of us can tug it around for aiming without too much trouble.
My powder bill has just increased tenfold!