If you would have just acraglassed the barrel in place, you wouldn’t need those little pins. Just kidding. Things happen even with the best laid plans. Few years ago I built a trade rifle that I Was trying really hard to copy from a book, it required a third lock bolt at the very end of the lock plate. I got that okay but thought old Murphy’s law would strike. I’ve had a few mistakes while building through the years. In this case, I’d stain dark to hide the patch jobs.
Bob