https://thegreatmodel8.net/

Hello – just saw this topic. I believe you won't hurt the rifle's value by drilling holes to add a period correct receiver sight. However, I prefer a tang sight. The hole is already there, and unlike tang sights on Winchester lever actions, the M8/81 tang sight doesn't interfere with your thumb's po...

You might check the bedding. I've seen several lever actions whose accuracy substantially improved with a bedding job.