What a great debate this is, and great points by all .
The best and quickest way for me to describe my 40 + years as an air gun hunter on the calibre question is this-
Heart / lung shot - .22 full power to the chest area through those tree branches, twigs, etc if the trajectory allows.
.177 full power directly to the heart "only" through those tree branches,twigs,etc AS the trajectory allows
Head shot - 22 full power to the "head area" through those tree branches, twigs, etc if the trajectory allows
.177 full power directly to the "temple and brain" "only" through those tree branches,twigs, etc As the trajectory allows
On "open ground" either calibre is deadly if the marksman knows his craft .
To take this a "step further" a pcp rifle will put the average shooter with in the realms of a springer marksman.
"Does it matter" ?
What a great debate (just my humble again lads/girls)
Edited by mark williams, 10 February 2015 - 11:01 pm.