iv always used 22 for vermin control,both fac and 12 ftp...now im using a daystate huntsman in 177 for rats at a range of 25 yards and im impressed with it.22 definatly has a little more kinetic energy.think that £1000 for any air rifle is to much money.you can pick up a daystate huntsman for under £200 and they are brilliant.the s410...logan s16...are also reasonable rifles.