When I was 16 or so, I attended a box bird shoot. I recall one shooter with a double - brand I do not recall, but it was very nice in the eyes of this gun - enthusiast kid, and he got the gun out of the trunk of a high dollar car - Jag or something similar. Me and several of my goggle-eyed buddies had a few brief words with the gent, before the match started. He told us the gun was new. Anyway, as the match proceeded, he was clearly not happy with the way the gun shot. He finally left the ring and sought out a small tree next to the parking area, stuck the barrels into the crotch and pulled. He then sighted down the barrels and returned to the shooting area. I asked my Scoutmaster, who was our escort that day, just what was going on, and he opined that the gun likely shot too high for his taste, and so our friend had "fixed" his gun.
If I had not witnessed it, I would not believe it. I suspect that the gun was likely worth more than my parents house. In "Shotgunning, the Art and the Science" , Bob Brister tells a similar tale from a south Texas quail hunt.
I guess I am more comfortable with making changes to the stock.
Regards
GKT