I am looking for some very quiet 22lr sized ammo that will feed from a 22lr bolt gun magazine. I have been using Aguila Colibri with my bullet trap in my garage, and its working well and it is quiet enough to not disrupt anybody. But its impossible to find right now. Below is a list of what I know is quiet enough, anybody know of any I am missing, I can't find any of the ammo below. Regular sub-sonic ammo at 900-1000fps is too peppy. My purpose is to do positional practice with my PRS/NRL22 rifle.
Aguila Colibri
Aguila Super Colibri
CCI CB Shorts (quiet enough but do not feed, so no go)
I am also watching for
CCI Quiet 22 (#970 710 fps)