It all depends on the size, and style of your blast box.
Small box, 15-20 lbs..
Box long enough for barrel and action,, 40-50 lbs
Aluminum oxide is like flour, it is fine, but heavy. In fact, a fifty pound bag is around the size of a 25lb flour bag.. ...
And make sure you have no air leaks, this stuff will fly right out of the box� Oh, and it is not cheap�..
Those that want to do one item, might want to just send it to someone like Edie or myself.. We have a lot invested into our equipment, and licenses, and could use the extra work..
Just a thought...
