Thanks for that bit of info MM.
I've just recently gotten back into air guns...yesterday I did some research & I'm not going to be manually pumping any more...seeing the damage & corrosion that can be caused after just a few months use of pumping without a water/vapor removal system is kind of scary. I'm not even sure the Hill system works that well...I'm gonna look into it, but until I'm convinced it removes most of the moisture, I'm going to only use scuba & pony bottles.
