Here's the thing though, I was thinking
new because I wanted to leave as many existing ones in as good of a condition as possible. To reduce overall cost and weight, I was thinking a one-piece polymer stock as a more budget option would be viable. You're right- .308 is rather chonky. Just looking for something similar enough to the 8x56 Spitzer round that a modern shooter could find easily, will look into 30-30 some more.
Making the M95 is significantly more likely than the Steyr-Hahn because it's an overall easier mechanism to produce and simpler to design. Though I'm still bent on at least making a 3D-printed replica of the Steyr-Hahn just for the satisfaction of "I did a thing" ^-^.
I'll ask around some other places to see what their interest is. Thinking now, ~$400 for a new, Polymer stock M95 sounds about right, though it could be cheaper. I'm thinking of keeping most of the things the same for the budget version with some simplifications- if any.
Realistically this is all still just dream-land because I'm still in highschool, but with some time I can make something functioning before having to find a way to make one using actual materials. There's a few places in town that I'm certain would be willing to let me use a welding machine and some power tools, given that they get some form of compensation