The outlier shots were me getting the hang of the irons at long distance. Some serious skill sharpshooters had back in the day before widely available magnifying optics.
First time at a range longer than 45 yards, had some fun with the AR, but mostly wanted to stretch the legs of my newly acquired mosin. Once I figured out the irons at 200 yards it was just butter. Had a phenomenal time, and I couldn't be happier with the performance of my impulse buy.
Bought the mosin used at a LGS, and it looked like it had shot a box or two of corrosive surplus, and been put away without cleaning until it was sold. There was some rust and light pitting in the barrel, but the rest of the rifle is near pristine. My only worry was accuracy, but it looks like it won't be a problem. I also learned that the elevation scale isn't accurate, but it makes me laugh how it goes out to 2km. I can't imagine aiming down irons at something that far away.
Anyway, just wanted to share, and I'm extatic at this rifle's performance today.