Hi Rich,
While I can't speak for the others, there are some procedures when working from a blank that should be followed in sequence. Many times on this forum I see new guys doing their first builds and they are inletting parts into the wood that normally would be done far later in the project. Not sure why this is ...maybe they think they will start on the easier things first
Anyway (assuming you have a good scaled out drawing traced on your blank) Starting from the blank Once your barrel is inlet, that determines where the lock goes. When the lock is inlet then you now have a basis for a few things one being the approximate placement of the trigger. With that position marked on the blank you can now get to inletting the butt plate at the proper distance. The lock also determines the wood parameters for the panels and the wrist and lower forestock. When the elements are inlet in sequence they then help you shape the wood.
The sequence I use is Barrel, lock, butt plate, trigger. The ram rod pipes come way later in the build when the forearm is closer to it's final height ( which is determined by the inlet elements as I described above.) Just trying to pass on some helpful critique. Hope you don't mind
Jim