many people think gamo pellets suck, but theresa standard lead one that doesnt. its the gamo hunter. in my viper ,they grouped the tightest out of the other 3 standard gamo pellets. also, they are advertised for their impact, and boy, do they have impact. there i was, hunting in my woods, and found the best spot with a view of two large trees, and waiting for some squirrels. There one was, and the normal shakiness of the offhand hold was suddenly gone, as i aimed for the vitals. SMACK! the pellet had a large impact, and went through the other side. As it fell from the tree, it caught a branch of a smaller tree, and swung from it to its doom. it moved for 2 secs, and then died. I am incredibly impressed with these pellets, and would definately use them again. it was about 30 yard shot, squirrel was 20 feet up tree. if you guys want pics, you'll get pics, but i gotta warn you, those pellets made huge entry and exit channels, and it is very bloody.