I have a Colt Commander Factory .30 Luger barrel which I found back on that Auction site that used to sell gun parts, and I ordered a match bushing from Brownell's for the thin Cmdr. barrel (I don't think they offer it any more). I had a gunsmith install and fit it for me, and man, is that thing a tack driver! Sub 1" groups @ 50' with plain old Winchester 93 grain ball. I was amazed at the accuracy. I heard later that the Army AMU was supposed to be investigating using a .30 (maybe .32 ACP?) for centerfire, but don't know what ever became of that concept.

I'm sold on it's potential; if only I could find a .30 Luger barrel for a full sized Colt, I'd buy one. Smith should offer it for their 952 for overseas use!