We;;. I have never built a pistol, let alone a rifle, but I have built an amazing number of powder horns. Because of the number, I have always tried to be machine heavy, but often I was room short. My first shop was in a six stall garage, 40' x 30'. So, I built a room about 20' x 10' and that worked fine. Next workshop was about 24' x 6'. That worked OK, but was a bit cramped. Then I got two portable shop buildings and joined them together with a dust control section in the middle between them. That worked very good. Each building was 14' x 8' and I did all my sanding on the west building and the rest of the work in the east one. That was fantastic. I really loved that setup. The final set up was a room built in another garage, this was 12' x 10', and it worked fine.
Equipment wise, over the years I had a Shopsmith with several attachments and although that worked good, I did get tired of the various setups, so I finally wound up with a band saw, a drill press, a 12" disc sander, a wood lathe, a 16 brush flapper sander, a 2 x 72" belt sander, a good vice, and an electric motor with a buffing wheel on one end and a grinding wheel on the other end. Also two routers mounted on a steel plate mounted on the work bench. It had a 2 x 6 and 2 x 4 frame and a top bench surface and a lower shelf made out of 1" particle board. I think the bench was 6' x 2'. All the equipment was set up around the perimeter of the room with the middle part open.
When I retired in 2020, I sold the equipment and then cleaned and painted the shop and now it is my wife's office. She loves it.
John (Bigsmoke)