plus one
I've had three rifles tuned by John. A Diana Model 36, a Model 48, and a D460. There is a thread here somewhere that I listed what he does when he tunes a rifle. Suffice it to say he is an exceptional gun/air smith. All three will pass the ten dimes challenge. Here are videos of the 48 and 460 at work after the tuning.
vvvv WARNING HUNTING VIDEO vvvv
Model 48 Squirrel
https://www.youtube.com/watch?v=e9yei24jslI&t=0s
^^^^ WARNING HUNTING VIDEO ^^^^
D460
150 yard golf ball
https://www.youtube.com/watch?v=2yv_PlMMpA4
I have the barrel of the Model 36 in to him now. He is going to cut it back to 13", re-choke and re-crown then thread for a moderator/muzzle break. I've also told him if he wants to make a muzzle break for it rather than pulling one of the shelf I'll pay for that as well.