Lots of good advice here. Anyone who thinks you can't do well on pins with a wheelgun never saw Jerry Miculek or Addison Clark at Second Chance.
The "Hit the White Part" book is, I believe, still available from Police Bookshelf, PO Box 122, Concord, NH 03302. Mitch Ota, a Second Chance regular and Master Blaster, wrote a very informative book about pin shooting. Title escapes me at the moment but Google search should turn it up, and Amazon or Ebay may well have it. (Neither book is recent, but bowling pins ain't changed much...and neither have revolvers.
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I did most of my pin shooting with 1911s, usually .45 but sometimes 10mm, and both worked fine for me. Still, my two "personal best" scores were with a 4" S&W Model 625 revolver, tuned for me by Al Greco, also a top pin shooter and Master Blaster. I got excellent performance with .45 ACP JHP 200 grain at 1050 fps or 230 grain at 880 to 950 fps. Al himself was partial to a Model 25-2 .45 ACP refitted with an 8 3/8" .45 Long Colt barrel from a 25-5.
Pin shooting is big fun. I shot Second Chance for 24 straight years, and still miss it to pieces.
If shooting matches were rock concerts, Second Chance would have been Woodstock.