Just to mention him in two posts in a row, MArooned weighed on the grail guns discussion with a post that I think connects nicely with Bluesun's observation on his Ruger GP100.
MArooned has a grail gun that is more attainable than some I have talked about. It's a Colt Python. A .357 Magnum, three pounds of blued steel and sex appeal. It is available, he can have one today if he's willing to part with the money. Sell something else, raid the kid's college fund, eat beans and rice for four months. But it's a marginal decision, to put a couple of thousand dollars into a gun that you might only shoot a few times a year. So it remains a grail gun.
This was one I wanted, too. I've held one fairly recently and if I had wanted it badly enough, it could have been mine at a very fair price. I passed on it, telling a friend that it was worth several hundred dollars more than he was asking and that he should do a little research and then sell it.
It was beautiful, probably NRA 95%+, and what I would have done with it was shoot it, carry it in a holster, and otherwise do things to it that would make serious collectors chew through the restraints to come after me. But holding it and considering it helped me get over it, because I realized that, as beautiful as it was, it wasn't what I wanted.
What I actually want is what Bluesun has and loves. A Ruger GP100. A heavy, stainless steel (or blued) revolver that I can shoot regularly and enjoy. They are available for about $600, new ones are being made every day, and I would be as happy with a GP100 as any .357. I don't know that it's a grail gun in the way that some of these are, because I can afford it and it will likely be my next purchase.