So far, my post asking "What would you recommend?" has 12 responses. Many point to the Ruger, but also fans of the Sig, Walther, S&W and Beretta replied. James even managed, through is classes, to shoot out the bore of a Ruger MKII, which I wouldn't have thought possible(but you put that much ammo through one...).
I'll throw out another option: if you have a pistol for which they're available, you can get a .22 conversion. I got a Ciener for my 1911 compact several years ago, and it works well. Takes less than a minute to change it over, and it's worked well with most ammo I've tried. Upside, you can get one without all the paperwork of a new pistol, and you can use it for less espensive practice. Downside, when it's in use your pistol can't be used as a .45 or 9mm or whatever.
Damn. I hadn't looked at their site in a while, here's what they make them for now: 1911, Glock, Beretta, Taurus and Browning Hi Power. And for Mini-14, AR and some AK platforms. They even make one for the Thompson subgun.
That's the take so far. Anyone with a suggestion/recommendation/"Stay away from", throw it in; later on I'll take everything I get and put them all together in a post.