I was pondering the idea of 223 brass based alternative to the 22 hornet or even down to 22 mag velocities for small game hunting and putting down common small varmints. Are there any designs out there that cut down the length of a 223 case and neck down to the .224 size to shoot 40-50 gr bullets at 2000 fps or less? Maybe a simpler solution would be to reduce a 223 load to those velocities??? My train of thought on this is the situation where 22 LR/Mag ammo would not be available and you would have thousands of 223 bullets, cases, and reloading supplies to make a center fire replacement. Asking for your expertise on this one.