I have a similar feeling, 12 ft is JUST enough for hunting but Marksmanship has to be top notch. However for .177 12 ft lb is enough as at 55yds the pellets jsb heavies, just go straight thro a rabbits head. In .177 fac air, more power is a complete waste of time. Sub 12ftlb .22 is a noticeable improvement on bunnies but range has to be known exactly for a clean kill. I am currently filling the FAC application form in and will be going for .22 at 30ftlb and .25 at 45ftlb. Some will say why not go for rimfire or hmr but you will almost inevitably get a richot some time!! There is plenty of housing within half a mile radius of where I shoot.