I put the target at 50 yds and shot 5 shot groups with my CZ453 HB and my HB 10/22. I shot the semi auto Quiets in an 1 1/4" out of the cz and about 2.5" in the 10/22 still with malfunctions. Remington sub sonic hp's gave 1" groups in both guns. I had a 1" group in the 10/22 with cci std velocity and the cz 453 gave a 5 shot group under 1/2". Cci sub-sonic hp's also gave 1" groups in both guns. I did find a box of the cci Quiet 40 gr with the 710 fps they grouped vertical spread of 2" way low. These were the ones Heavy load talked about. Nothing like finding out for your self. The sub Sonics were at 1050fps the std vel cci at 1070fps not much noise differance. The sa quiet and 710 quiets you could actually see the bullet and watch its trajectory. Neat but maybe as ratsmacker says they ain't up to coons a guy can see that. Mb
