The BEST way to increase crossbow accuracy without upgrading to a high-dollar model is the choice of the right vane for your crossbolt. Flex-Fletch Crossbow Vanes are 30% thinner and much smoother for a fast drag-free flight. The tighter weight tolerances produces consistent shooting performance. A off-set fletching configuration will cause increase arrow/bolt rotation enough for arrow guidance and tight groupings especially at 40 yards.