All of the hewn timbers I've worked with have the scoring marks from the scoring axe, and often you can still find the juggle marks. When hewing shorter timbers, you have a better chance of finding a log that has little taper, and is just the right size for that timber. One of the barns I'm working on has 45' plates that are only 5"x7". I suspect even with minimal taper that there was plenty to hew off of the butt end of that log. I think I've watched just about every hewing YouTube I can find, and there are some extremely labor intensive interpretations of hewing out there. I find with the right tools and technique, it isn't as hard as most people think it is.
The hewing varies widely on the two Dutch barns in the shop right now. The outsides of wall posts and purlin posts are scored much deeper, whereas the exposed sides of same are not over scored, and the hewing is much better.
