The first spray took a lot for me to get through...all my guns are black, and I was so worried about screwing up the look. Made sure to do a perfect masking job and remove all the parts I could that weren't to be sprayed. It's my duck gun, so it spends a fair amount of time hiding behind brush...I figured this would be better than all black.
Whole thing minus waiting for paint to dry took maybe 20 minutes tops. Used the tutorial from here: How to Camo Paint Your Rifle and Make it Look Great - Predator Wild Forum
Remington 870 went from this:
To this: (mind you, the paint isn't cured so it's still a little glossy and the camera flash did not help either)