If I had to guess I'd suggest that gun sales fall into two catergories...
a) Those who hunt
and
B) Those that don't
Of category A there will be percentage who prefer the larger calibre for percieved 'knockdown power' ignoring any argumnet over whether that persons belief is right or wrong.
Of category B these people tend to shoot more at iether fixed or more known/predictable distances and then .177's flatter trajectory matters far less and springers in particular are usually much 'nicer' to shoot.
All of which limits the appeal of the 'boys' calibre and tip the odds in favour of 'mans' pellet...
Very interesting thread. I noticed this when looking for preowned pcps (s410). Almost everything was .22. it seems there has been a shift away from .177 which is a shame. Yep people think .22 is better for hunting but if you're accurate and shooting within your range anything within the head will knock the quarry down. I'd always hunt for headshots and anything where this isn't possible is a no no for me (just a personal thing, not claiming to be right).
I suspect that the explanation for the predominance of used .22 rifles is quite simply that the majority of "casual" (rather than informed forum members) airgun buyers - probably buying for mainly plinking and garden pest control - think that .22 is more "powerful" on the bigger is best basis. The majority probably didn't or don't understand the flatter trajectory benefits of .177. I daresay that the majority of airguns on the second hand market are also springers for similar reasons. I don't think that much has changed in the last ten years of so from my early efforts to find a secondhand .177 PCP maybe 10 years ago - there were much fewer of the smaller calibre available then too.
The smoother shooting characteristics of .22 springers probably means that the buyers of .22 rifles for garden use may well have made the best choice for their needs too.
Not necessarily...
I can think of more than few agreeing with the previous statement & their argument will be Yes, .177 is more forgiving trajectory-wise - but an off target shot may often wound.
But although a .22 is more demanding to range find - an off target shot will either result in a miss or a better chance of a kill than the smaller calibre.
Don't ask me the merits of this, my experience with live quarry is limited and either did the job for me.
BTW I mainly shoot targets these days and nearly all of my guns are .22 except for a HW98...I must be a masochist.
I would say .177 is more popular as most people just shoot at a range and its easier to hit spinners etc with .177. Most people just want the easy option like every thing today.
mk2 rapid.22
The .22 brigade are still sniffing snuff
I've found that shops that cater more for shotgun and firearms users tend to stock more .22 air rifles and the more specialised air gun shops have more in .177. There's still a belief among the old guard that .22 is 'more powerful' whereas the more informed have a realistic balance of what's used.