Banter you have to set the shuttle my friend with the allen key. without setting the shuttle it will slice off the ends of the pellet, How on earth can you fire variouse size pellets if it didnt have a shuttle to set, You adjust it for each pellet length, You can fire thousands of rounds but it will chop off every shot unless the shuttle is set, Been setting them since they where first imported and there is no change in the shuttle arrangment an any of the careers, You only have to set it once with your pellet and if you decide to change pellets you have to reset the shuttle, Hope this helps,