Jim Watson, did you ever shoot long range on the old, original military C target with a 36" five ring and 20" V ring that dates back to the very early 1900's? When that finally went away in the early 1970's and was replaced with the NRA LR target wit 10 and X rings dimensions you mentioned, lots of old timers threw a fit. No longer could they shoot inside 36 inches all day long and never drop a point. But the new target sure made breaking tie scores easier but you've gotta shoot inside 20 inches now to never drop a point.
US Navy Distinguished Marksman Badge 153
Former USA Palma Team Member
NRA High Power Long Range High Master
NRA Smallbore Prone Master