Gentleman, there are 2 post on the same Rigby Flat subject going on at the same time. I made a few post on the other.
Most certainly they didn't use the flat to torque on as the corners are soft as the barrel and like someone did to my original Rigby the front edge is damaged by a misused wrench. These guns are so accurate the barrels would have been turned on centers.
Yes, the weight of the Rifles had to meet the 10 # limit. Plus, with Rigby vs Nocksform he added 2 half flats on the sides. If weight was an issue for this little amount, why not remove it completely. The flat is about 0.010" above the barrel.
I think they're their for appearance only vs nothing at all.
