Quote Originally Posted by peddy View Post
If you read my post Bru.... with regards to pistols NEVER leave them with capsules stored. The co2 will damage the valve seal, in addition capsules have different shaped ends so leaving them with one maker will leave an indent in the valve seal so when you use a different brand the gun will piss gas out when you try to seal. Always store with a smear of pelgun oil on the seal to preserve the valve seal. Rifles are different as they seal via a cylinder end cap so leaving it gassed will keep pressure on the exhaust valve preventing any dirt contacting the seal.
I'm sorry, but how could CO2 damage a valve seal? Carbon dioxide is an inert gas is it not?