To give you some ideas this is a Rossi 92 blasted with 80 grit play sand at 80psi. Left side of barrel is sprayed, right side is stock. Same rifle with OEM and blasted receiver.
Something else is that when using AO or sand that raises the surface texture it will be more prone to hold moisture and show rust as well as scratches when the raised ridges are knocked down. I did the whole 92 in sand with the intent of a darker cerakote but never got around to it. It now looks horribly "scratched up" and when the weather gets hot I will either reblast with sand for cerakote or hit it with glass beads and smooth it down. The deeper cutting of AO or sand will also leave it with a darker grey finish, the glass beads will tend to give it a brushed satin satinless look.