Couple of comments:
1. I personally have used True Oil with Japanese dryer when I was building rifle stocks. Beautiful finish, but 25 coats or more was a time killer.
2. When I was involved in Protostar Ind., we made all of Weatherby's wood rifle stocks. We use Permalyn (Brownell's) to finish all of them and as a filler and finish, it worked beautifully. We were in the middle of designing butt stocks for Ljutic's and Perazzi's and would have used Permalyn on them.
Unfortunately, due to circumstances cause from one of our customer's failure to pay us timely, and the partner afraid to get tough on them, I left. I was tired of having accounts receivables in the $60K range running many months behind.
Permalyn is like a resin and once dried, it can be wet-sanded and power buffed.