One more opinion---based on a 66-6 in hand comparing it to the
The gun in the pic is a 686.
1 Lug is longer than the 66.
2 Bottom of forcing cone is not cut flat like the 66.
3 distance from rim to edge of cylinder is more than the 66.
I don't currently have any L frames to do a direct comparison,
just J, K, N and a few old hand ejectors. Guess I need to