Rigs, If you were speaking of inconsistent accuracy whether it be on a live squirrel or a live deer in a hunting situation in addition to inconsistent accuracy on a 3d target and various scoring ring targets in a tournament/target situation; I think it would be fair to say the inconsistency was a basic marksmanship issue.
But, there are ample examples where a proven marksman who was a champion at shooting scoring ring targets in a tournament situation yet would have great difficulty in shooting an obscure target w/ out scoring rings in a hunting environment. Conversely, there are ample examples of persons having proven their field marksmanship on obscure alive game animals in a hunting environment yet would have great difficulty in hitting a large brightly colored round target in a tournament environment. This would be a practice/training issue. This applies to many disciplines of marksmanship and is not limited to bows and arrows.
If you were to practice and train in pistol Bullseye to become a champion, you would greatly improve your basic pistol marksmanship skills. But, if you wanted to greatly improve your field marksmanship skills to accurately place a killing shot in a combat environment afield, the method of training and the simulation targets chosen would be far different than Bullseye. The same applies for the Feds and the cops who train to improve their field marksmanship skills by utilizing obscure targets w/ vaguely defined kill zones, not by using scoring ring targets in a target environment.
Shooting and killing an obscure human being in a life or death combat environment is of greater gravity and of greater consequence than killing an obscure game animal in a hunting environment, but shooting a game animal does have gravity and is of great consequence none the less. Both share many basic elements in method and both share differences with that of scoring ring targets in a tournament environment.
As it relates to archery, a great example of this was written by Saxton Pope about Young, Ishi, and himself. Both Pope and Young were above average shooting the American Round. Young was well above average. Ishi was absolutely aweful yet he could shoot rings around Pope and Young on game animals both large and small. Pope documented how Ishi was good at hitting game as small as flying birds out to 20yards. In addition, Ishi could outshoot Pope and Young in his form of stump shooting where he shot arrows through small rolling hoops and hit small balls made up to represent game animals. Pope wrote how Ishi was frustrated that he(Pope) was able to shoot the American round well yet was unable to hit a deer. In fact, Pope did not kill his first deer w/ a bow and arrow until after Ishi's death. Both did well in their own methods of training but both suffered when in the other man's court as the methods were different. One method proved better for bright colored scoring ring targets while the other method was better for obscure targets.
A good modern example is the Olympic archer who was filmed on a hunting trip where he missed an easy shot on a big deer. Again, this is a training/practice issue. If you want to better your skills at hitting obscure live game animals in a hunting environment, be creative and practice on targets that simulate the game you seek in an environment that duplicates your hunting environment, and hunt as often as you can. If you want to better your skills on an indoor tournament Bullseye, paractice on such targets in a simular environment and enter as many tournaments as you can. If you want to do well in both, practice both.
later,
Daddy Bear