tried them my ev2 hated them, muzzle velocity was the same as jsb 8.44g without changing a thing. they grouped well to 40 yards then after that grouped like a shotgun, all over the place. you have to try them to find out if your barrel likes them. as i say mine didn't. they also seem a hard pellet, well made though, there was no sizing on the tin, but were a tight fit probably around 4.53, my barrel likes 4.52.