I just posted this the other day, But here is my ? change made in 1891 38S&W, This is from 15 yards, And if I recall, I had to aim about 6" high.
I did the same grouping twice on the same plate.
upper and lower.
Although not POA, But shoots the same each time, with just off the shelf 38S&W ammo.
It is alot of fun to shoot especially when others are watching and wondering what the heck you are shooting.
I wish I had a nice set of pearls like you have!!!!!!
Peter.