As Andy said they are both equally as accurate as each other when matched to the right pellet. i have owned 3 one full length sporter stocked and one full length thumb hole i now own the hw100kt and its perfect for my needs, i prefer the thumbhole stock to sporter but thats my opinion, i have the a&m cylinder on mine i use it for hft as well as hunting lovely rifles and bomb proof if looked after. ATB Aaron