As I recently posted on another thread here about the 300S, I read in a blog/feature somewhere that you should move the action forward on the sled to relock it after firing BEFORE cocking again, as otherwise it can lead to the premature wear of some parts, but I'm not sure if this is just someone making assumptions, or whether it is based on actual FWB operating advice. I notice a difference in the smoothness of cocking if I don't lock the sled, so out of habit I always shake it forward first. HTH!