But after Mr. Keith hit his target he knew the correct hold over and could then repeat the shot. That's how the shots we now commonly make all start. Smooth bore to rifeled barrel to smokeless powder to ect. you have to crawl before you can runAlso read the mention of 2300 feet midrange elevation, that comes out to about 1/8 of the distance. BTW Elmer Kieth in the 50s did some long range work and hit targets at over 400 yds with a snub nosed revolver by marking the misses in the snow and walking the rounds on target. A fine feat but not something that you can depend on for a first round hit.