Gibbs is too modest to say for himself; he is the SWEFTA open champion, knocking down the highest gross number of targets in the season.
I've had a pretty good look through his Sightron and it is very impressive. We had a stand at a countryman's fair, and we had placed some have-a-go targets amongst trees and ferns. I began with the scope totally out of focus and as I brought it in, the ferns just optically jumped into view.
Got rid of my BN some years ago in favour of a T35 fixed focus; if I change my scope it will be for a Sightron.