Accuracy with a X-bow is determined by several factors, all which have been listed above. Matching the bow and the arrow is the first step in accuracy. The next is your scope. You can't expect superior results with inferior equipment. This all being said, I can shoot a 1" or less group indoors at 40 yards...I personally never take a shot that far in the woods and keep my shots to 30 yards or under. 30 yard outdoor shot groups are 1-1.5" groups.