Dear 257Robt,
I am very impressed with my 4 3/4" barrel but as I said, I originally was just getting it for fishing, it just performed so much better than I ever expected...I will continue to use my 4 3/4" Standard for small game and close range predators in the future.
I don't hunt with centerfire pistols but I have killed deer with a S&W Model 681 .357 with a 4" barrel, it was enough for me...I guess everyone has an opinion on barrel length, but I think practice is more important.
If I was going to buy another rimfire for small game today, I would only consider two...if I didn't have a Ruger MKII Standard I would add it to the list, especially for the money.
#1: The NEW Ruger MKIII 5 1/2" and put a good handgun scope on it(Leupold or Burris)
#2: Ruger New Model Single Six Hunter 22LR/22WMR and also put a good scope on it. With both 22 Long Rifle and Magnum this pistol pretty much has you covered...
I love the Ruger MK series. Buckmark are really good guns, and I have one, but I just prefer the MKII.
Stay Safe. Happy Hunting/Shooting.