measurements are 7/8 barrel, width at lock panels 1 1/8" and width at wrist 1 1/16
Jim, Even for a slim 7/8 barrel the lock panel width should seem to be a bit wider 1 1/8. The problem is that with your 1 1/8 lock panel the wrist width has be to less ( as your is ) and is extremely thin at 1 1/16. Now I don't know southern rifles well but most PA rifles minimum wrist width is 1 3/16 - 1 1/4. A bit wider lock panel would provide for better architecture.
Several things can be done to provide lock panel width ( such as flaring out the lock panels slighty.
I know these width measurements don't show in your photo ( a top down one would ) but they sort of jumped out at me.
I'm basically a PA rifle student and part time builder certainly not Southern rifle expert, so if a Southern Builder wants to correct me , please do.