Good idea, thanks!
I won't be able to use a belly dump due to it's location near trees i.e. my Poplar grove.
And in thinking about it last night, I'm probably going to have to either rethink my location or rethink how I'm going to do this. Where I want to put the dirt/berm is on a side of hill and again, due to the trees, the truck would have to dump on a side hill. I don't think the trees will cause a problem, not the virgin (with gravel). But dumping on a side hill - not good, too many youtube videos of dump trucks falling over down hill.
Due to the cold weather and now rain, I haven't been out there to really assess where exactly I can put my pistol shooting range, I know where I want it, but it might not be realistic.