Airgun Repairs, Bespoke Airgun Smithing and Precision Engineering Services
http://www.magic9designltd.com
I'd suggest no CO2s...in a post-fall world I'd want to focus my efforts on getting food on the table and not looking for CO2 cartridges. I'm new to shooting and just starting out with a HW45 .22 pistol and, once I get both arms working again (had a Stroke in June. Doh!) a HW77 .22. This would be plan A!
davidy