It is always best to control the barrel throughout the cocking/loading cycle. I've seen many post/pictures of broken guns due to the barrel slamming shut. Even on a break barrel, you can catch a finger or have the gun come up and whack you in the head. Regardless of your damage, the gun can well be ruined with a smashed breech and broken stock. So you say your gun has a properly functioning anti-bear trap? Well, if you are like most air gunners, sooner or later you will try someone's gun or buy yourself a different one and, guess what? Not all springers have an anti-bear trap! If fact, practically any gun from the "olden times" didn't have them. Shoot an old Diana or Walther springer and you won't have that safety net to catch you, so practice makes perfect.