@starling in a thread earlier this week, I decided to try a Daisy 415. I bought a Beeman 17 a few months ago, but the amount of muscle needed to operate the single pump was getting to me, I don't think I shot more than 25 pellets through it.. The Daisy arrived the day after I ordered from Amazon, on Wed. I started shooting it using old BB's I had laying around, some copper colored Crosman, some silver colored of unknown origin. It shot fairly accurately, powerful, etc, but I was having a problem with it. The trigger would frequently go back half way and then seem to disconnect. If I released the trigger and pulled again, it would go back halfway easily to where it disconnected, then engage again and fire. I was wondering if the old ammo, some of which is semi corroded looking could be the problem? I was considering sending the gun back as defective. I had also ordered some premium Daisy "precision ground" BB's, which arrived today. Down to the test range, the basement, and loaded it up. The BB's are nice and shiny silver color and feel a little heavier than the others. Zero problems, it was the ammo. The new BB's also seemed to be more accurate than the old stuff I was using. So, lesson learned, don't use crappy old BB's in your new gun. Very happy with it now, the trigger can be staged back for an accurate let-off. I'm getting close to 100 BB's to a CO2 cartridge, which I'm happy with. Using Crosman cartridges I had laying around, don't know if one brand is better than another. I had also bought a lubricant by Capt. O-Ring, made for marker guns, putting a drop on the top of each CO2 cartridge before loading is supposed to be good for preserving the o-rings. So thanks @starling for the recommendation, I can see myself getting much more use out of this than the Beeman.