I've bought a tin,EVERY SINGLE PELLET SKIRT was damaged,they're extremely thin. I had to press the skirts into a FTT 5.55 head to fix them and they shoot great now,I'm using a maximus .22 tuned I get 20 shots with 18.13 with 23.78ft lb average around 760ish fps and ES 22,with the monsters I can get 29 shots and average 670ish fps 25.5 ft lbs and ES of 31, so a drop of about 100 FPS. They shoot just as good as the 18.13 and hit harder on target,I've tested BC using Pro chrono at 25 yds and it varies from 0.038 to 0.046 the heavies18.13 usually ave 0.035 for me.Hope it helps,BTW matt dubber(AirArmsHuntingSouthAfrica) has a video about them on his you tube channel, its the video on the FX crown at IWA