Things I liked:These pellets out of my Gamo whisper fusion pro, are super fast. At 30ft. They are devastating on rats. Fit tight in the gun. Out of my gun, they do make that sub sonic crack!! But the rat never hears it!! Im 6 for 6. Love this pellet for short range pests. Things I would have changed:The price is a bit high for 100 pellets. Would like to see a larger tin quantity for the price. I would also like to see a heavier grain pellet as well. I think Gamo is on the right track with this one. What others should know:At distance they are not as accurate as I would like. If these were in heavier grains, it might just be the perfect pellet. Try a tin on a few pests. Just keep your taget close!!!