In the UK I used a 300 bar divers' bottle, but now in SA I am considering getting a stirrup pump. Likely distance to a fill-centre plus cost of divers' bottle and fill gauge combine to make a pump the economic choice. So do pumps actually do what they are supposed to do? Is there a risk that moisture may damage the air rifle's internals? I note that the Hill Mk2 pump comes with a 'dry pack' and claims to remove practically all the moisture from air pumped into the cylinder. It's also nearly twice the price of other pumps e.g.Webley/Logun/FS/Axor. So is the Hill dry pack system worth having, or is it a solution in search of a problem. Also, Hill recommend changing pump seals every 3-4 years. Extra work and expense. Go with a pump? If so, which one?