The HW77 .22 is more than capable of taking quarry.........the only issue is the shooter...this is not to say your not up to it mate......its a matter of confidence and capability.There are many reg's here that use the HW77 on reg basis and have no prob im sure they can give you tips on this.....maybe start on static targets(paper,cans,card)before trying live quarry to gain confidence
we all love to shoot but none want to wound and make live quarry suffer