I agree reason I asked folks on this forum. For the money I would expected a 100 percent wood gun. I agree with you. It’s a short cut. At the time I got a small inheritance and was like a drunk sailor on pay day. I do feel I significantly overpaid even if it was all wood. When I speak to them again I will let them know our feelings.
I asked a question initially and apparently there builders that do use fillers for barrels, breaches, and buttplates in general.
Nobody who has any right to charge money does that, they do not get a pass. It is 100% not acceptable. Bedding a butplate in bondo is not something a competent builder should ever do. That is a shortcut that is covering up laziness or incompetence.
Let me put it another way. Building rifles is an art. Painting pictures is and art. IF you commissioned and "artist" to paint a portrait and they delivered a stick figure done in crayon, you be mad. Same thing with the rifle.
Is is OK to use a skim coat of epoxy in a barrel channel or on a breech plug area? Sure. IT is probably a good idea on heavy recoiling guns. It is not a shortcut.