llangatwgnedd
Established Member
.25 will make a better job of it. greys are tough animals, a 177 will only annoy it, a 22 will need to be a heart or eyeball shot. a 25 in the chest cavity will stop any future acrobatics.
With the UK airgun laws stand at 12ft ib, head shots only no matter what calibre.
.177 will drop a tree rat @25yds and is far more accurate than other airgun calibres (especially with a PCP air rifle)..
Disposed of eight tree rats back in February in the garden