This was sent along to me to share:
Just FYI. The primo sniper rifle of the 1850s-1860s. How accuracy was measured and compared. The price of this rifle was outrageous but still the Confederacy bought some when they could. Used a different style of rifling and bullet. For best results the gun was cleaned after each shot and one had to be careful how much pressure was used to seat the bullet as that changed the point of impact.
BTW Often used in contests, was ‘string length’. A string was stretched from the center of the bull to each of the bullet holes, the total length of the string was the ‘score’. Winner was the shooter with the shortest string length.