bit of a delemer,

having never hunted small game with a 12 fpe 22 cal airgun.just how effective is this fpe level for small game hunting?this is a bit of a loaded question from me,as its not bout rifles but a pistol and i have never owned nor hunted with any airgun that didnt produce 20or more fpe in 177/22 cals,as those who know me will be aware i have been working on a particular 22 cal pcp pistol for some time and previous to that my hunting pistol in22 cal produced 30 plus fpe,the pistol have been building is very capable of 30 fpe but during testing of this new pistol my hpa bottles needed filling,so began testing at 2000psi just out of curiousity,i settled on less than 2000psi at 100 bar approx 1450 psi once again out of curiosity,what actually happened amazed me,i eas getting 12 shots at 100 bar at 11,28/11,47 fpe for those 12 shots from an unregeed hpa system with excellent accurracy,this equats to only 19fps variation over 12 shots or approx 1.5 fps variation per shot over the 12 shot string,which is pretty good from a reged pcp gun,the gun is allso very accurate at this power level,so do i just leave it alone and stay with this 12 fpe power level or do i continue testing and find its full potentual??before i make that descision, i would like to hear from those who have hunting experience with 12 fpe 22 cal guns,tho i do prefere more power for hunting,i am not tho prepared to right off 12 fpe either,not at this very consistant performance level.i reaaly just want to know how effective 12 fpe is in 22 cal,any input would be appreciated.

I used to use a similar 12fpe type .22, for possums it really wasn't a good weapon. I did kill with it, but it had to be a 'perfect' shot. I now have a .25 Hatsan 'break barrel' that's above 20fpe. It's deadly on rabbits and rats, and far more 'definite' on a possum.