strange subject title i know but falcion 1 8in action raptor shoots fine for about 20 shots then suddenly drops right off never did before just lately any ideas

rabbits we shot about a dozen yesterday only one really worth skinning been like this for a while really skinny but othewise healthy as far as i can tell any thoughts,

falcon 2 12in raptor never been a problem serviced regular clean air etc. now starts at about 11.5ftlbs at full charge as the resevoir pressure drops the shots go up in power not just a bit but well over the limit got to suus this me thinks but not got a clue any help appreciated.


engineer