Black Jack,
Nice rifle, much better than my first as well.
Taylor was, of course, spot on. Seems like all the TVM's I've seen have fat lock mortises.
I've looked at the pictures of your lock and barrel about 20 times and keep wondering about the rust bluing process you used. I've finally decided to comment and/or ask about it as you seem to have done a fair amount of experimenting with it.
It looks like in the pictures, you have a fairly rough finish on the lock especially, and to an extent with the barrel, even maybe some pitting. Were you going for an aged look? Reason I ask is that the rest of the gun does not have aging, and rust bluing can be done without the pitting and rough look.
I have had success with LMF browning solution and then boiling distilled water to get rust bluing, resulting in an even, smooth finish.
Again, congrats on a great first rifle, and it was ambitious to include some relief carving, an element I did not include on my first rifle.
To pile on to the other feedback, I would suggest that historically, rust bluing was likely not done on that sort of rifle at that time period. There seems to be round and round debate on what was commonly used or not used as a metal finish, and I am not an expert, but you could have left the lock and barrel in the white without anyone saying you did wrong.
Cheers,
Norm