Excellent video mate, very interseting,
i always say you have a max area between the rabbits eye and ear the size of a 1 pence pice to place the pellet in, ive never had a runner with a pellet placed there!
Leadpig is right, most pcp,s are capable of hole on hole groups (in the right hands) @ 30 yards, but its knowing your rifle and how it performs in different weather conditions, ie wind, rain etc.
A slight cross breeze that can be felt on the face is approx a 3 mph wind, that would push a sub 12 ftlb.rifle of course buy 1/4 - 1/2 inch depending on the type of pellet used.
So no matter how accurate you rifle is, its still down to the shooters capability, knowing your rifle and how it performs in different wearther conditions and most importantly, shot placement!
Also when people think they have that sorted, theres shooting up hill, down hills up in trees etc, but we wont go into that today!
Maybe scarecrow could do one of his cool videos and explain the wounders of shooting angles and how the bullet is affected,
Would be interesting