Leomort - regarding the 317 vs the 63. I consider the 317 to be a "niche gun". If you need something light as a feather, but don't particularly care how easy it is to shoot - the 317 is your number. But I know for a fact that the 63 will be a much easier gun to shoot with good accuracy. Even if they made the 317 with a 5" barrel, the 63 would still be easier to shoot.
A friend let me borrow his 317 for awhile, and I was not impressed with it's trigger or it's accuracy with the loads I tried. To be fair to S&W, the trigger has to be heavy to insure reliable ignition on such a light rimfire handgun. Idunno why I couldn't get the thing to print good groups even in SA, though. Anyway - I couldn't think of anything that 317 could do that my Beretta 21 couldn't do just as well or better. For something that will be very fun to shoot, and still pretty darn easy to pack - I'd opt for the 63, in any barrel length.
