Woops I jacked up my barrel

[montana]

Thanks for that.

I have been looking at putting an on-board air compressor on my SUV for airing and changing tires, including using an impact wrench. I can imagine the expression on my wife and kids' faces if I ran the 30' hose into the office workbench.

Would I be nuts to start by building a .300 WSM AR?
Or should I plan on my first project being a throw-away?

The person who never made a mistake never did anything! Go for it but take your time and "enjoy the process". Any process of learning, "education" cost money but experience is the best teacher. I would plan my first project as being an absolute success, with a possibility of an expensive learning curve. This forum helps mitigate cost,