I talked with the guy from arma coat at the Calgary gun show and I am really thinking about using armacoat on a couple of my project guns. My question is how best to prep the parts . armacoat recommends sand blasting with aluminum oxide in 80-120 grit but I don't have sandblasting equipment at home so I am limited to renting time somewhere like consolidated compressor to blast guns and they only have 80 grit garnet and glass beads in their cabinets. One of the guns I want to refinish is a winchester pump with some pitting on the barrel. Anyone have any tips or suggestions on the two blast media mentioned? Or suggestions of where I could get the parts blasted with the recommended aluminum oxide? I prefer to do it myself if possible to save money as this shotgun is a beater and I'm on a budget. I'm in Calgary if that helps