I also used to use BB caps which is a very short case - shorter than the 22 Short's - with a 22 BB placed in the case with just primer for the charge. These also work although at lesser ranges but the main problem as you can imagine is the BB often falls out of the case there just being too little purchase on it. They also are so short and small it's difficult to load them into the chamber if you have big mitts.
I went to the CBs exclusively and they aren't any louder to my ears.
gdv
