Operation of 22 HP adapter must be quite different. The 4 adapters that I have (none are 22 HP to 22) all hold the smaller cartridge by side pressure, none have a hole drilled into the side of the adapter. I assume then the 22 bullet slides into this adapter and then firing pin must slide in after pushing the 22 RF to the end.
Sorry for my error, does this adapter have a number as I don't have it on my list.
Does anyone have a #174 220 swift to 22 RF? Wonder if it operates on the same principle and also has the hole drilled in the side.
BillR
