This has always been an attractive idea with some rather unattractive consequences. I owned a Astra pistol. The piece was dual chambered for the proprietory Bayard 9MM and could shoot .380 as a substitute standard. The trouble began when people discovered they could get away with shooting 9mm parabellums, several equally obsolescent 9mms best left in collections and even .38 supers. Only problem was the firearm itself took a battering and you wound up with some very hard to find broken parts if not a disintegrating firearm and body parts when somebody 'shot just one' hot super load. You will also get some forward cylinider erosion not unlike shooting lots of .38s in a .357 without carefull cleaning. Remember too, a 9mm is .355 and the .38 family .357, This may, or may not cause some concerns with accuracy depending on the load and configuration. And here is the main failure. All firearms seem to have their own peculiar favourite load. You can take two rifles, say Ruger 7x57 off the assembly line with sequential serial numbers. It's not that unlikely to find A is a tackdriver with 139 grain bullets and B only shoots 154s well. Ruger has a similar combination with their two cylinder series. Again, it works, but you have to know your sight adjustments for every load. The 25 cartridge boast is just that! Like my Astra, I doubt you'll find yourself grabbing some .38 Smith and Wesson shorts or 200 grain super police to shoot Spetsnaz paratroopers while yelling WOLVERINES! And thats where this idea came from and should remain. Theres a WW2 resistance fighter's kit displayed in an older book on that effort. It's a older french .38 revolver using captured german 9MMs. The user PEENED makeshift rims with a hammer and punch <img src="/images/graemlins/blush.gif" alt="" /> And I thought ocassionally detonating primers with the Lee Loader was exciting <img src="/images/graemlins/grin.gif" alt="" /> The desgnger of this piece may have overcome most of these problems with metallurgy. But as a consumer, A. given the firearms business and many failures, will you have factory service in 10 years, and B. Wouldn't a few cases of cartridges be a far cheaper and practical solution? You'd have enough bullets for you and those big bad coyotes and wolves.Makefrineds, and the coyote will lead you to the local garbage dump- civilization and your rescue <img src="/images/graemlins/tongue.gif" alt="" />