If you're doing another one I think it would be nice with the barrel having the same profile throughout the length of the gun. Probably less work too.
You are 100% right on that. If I did another one, especially if it was a rear handled gun, I would simplify even further and eliminate the wood inside. Then just pour the rear full of epoxy up to the point where the trigger mech is installed.
A constant profile gun, without the wood inside, would actually not be to difficult.





