I'm happy to spend a few minutes before or after a session topping up the gun, I dont think i'll be needing to top up during a session, as they both have a decent shots per fill quota, and if i empty it its time to stop either way... what sort of scopes should i be looking at, I imagine ill be mostly shooting daytime, dawn and dusk... probably out of the van or a hideof some sort in the paddocks , at the ranges i mentioned earlier...?