Things I liked:They work great in my Crosman Remington NPSS 177. 10 meter sub 1/8 inch group and holds true a 20meter (1.4 inch). My best performing test amp. I will stick with this one. Things I would have changed:Nothing to add.
Things I liked:I have the 177 version of the Hammerli 850 Air Magnum. RWS Super Dome pellets regrouping 0.2 inched center to center at 10 yards. Things I would have changed:The 8 shot cylinder does not index well. It works but not smoothly. What others should know:DO NOT DOUBLE LOAD PELLETS!!!
Make sure you do not double load pellets. I've done this and the weapon fired the 2 pellets. Not a thing you want to do. You could jam things up; If this was a fire arm --- not good!
DO NOT SHOOT EMPTY CHAMBERS!!!
Know your count (number of shots} If you shoot on empty chamber you can freeze up the valves. Frozen open valve cost you the CO2. If this happens then let the CO2 bleed off and then remove the CO2 cartridge and wait until things warm up. If you rush it you will blow off the reloaded CO2. I have had to wait more than an hour (24 gram of CO2 can really freeze thing up).