re: .22 sub-sonic ammo sound review

I've been busy lately and haven't really had a chance to do much shooting. I'll try to get around to it within the next few days. I know the Super Colibri is rated at 500fps and the CCI stuff is supposed to be 750fps. As someone mentioned earlier I am dedicating one of my .22s to be sighted for shooting these loads. It would be too much trouble to re-sight when you wanted to use regular velocity ammo and I have a surplus of .22 rifles anyway.