longcruise
70 Cal.
That was probably measured with a string from center to each shot and the 21 being the sum of the string measurements.To put it into perspective, the union requirement to join a sharpshooters regiment in the CW was a standing 5 shot group at 100 yards not to exceed 21 inches.
I agree. And not unusual to have a discounted "flyer" as well. When we hunt, flyers count!I expect most internet accounts of accuracy are exaggerated. Posting the best 5 shot group out of twenty fired is not a standard, but a statistical anomaly.