45 and 7.62x25 are worlds apart L0L but both useful.
The latter is a good varmit round or for piercing stuff
I think the term I used / wanted to present was wildcat caliber conversion . I agree as to the stock punch ability yet wouldn’t carry for personal defense as a primary choice in original caliber. Yet a 7.62x25 with a good modern launcher and load combination with a speer gold dot hollow point or other good design etc ........possibilities are ....:o)