I guess my definition of a "grail gun" is a gun model that I would very much like to own, but it is very difficult to find in the condition and/or price range that I could justify paying. With that said, my current grail guns are:
1.) .44 HE 1st Model (Triple-lock), blued, 6-1/2" bbl. in VG condition
2.) .357 Registered Magnum, blued, bbl length doesn't matter, VG condition and maybe engraved
3.) A birth year (1954) .357 Magnum, blued, 5" bbl, VG
4.) Colt SAA 1st gen., .45 Colt, nickel, bbl. length doesn't matter, VG
It's quite a shopping list. If I happened upon one or more of these fine revolvers, my retirement plans definitely would be put on the back burner for a while...and maybe my marriage too!