Smith and Wesson Model 610 ,10mm, 6" barrel.
Worked for me at second chance in the Winchester shoot off in 1998, last year of second chance. Won 3 rd place and $1000 and a winchester hat. I had to borrow a buddies gun as the firing pin broke off my 610 in a early round causing a loss. you had to loose 2 rounds to be eliminated in the man on manshoot-off. That was 14 years ago.Use 180 grain hollow points at 1200 fps, a 216 power factor. Massad Ayoob actually wrote a magazine article on the 10 mm is it dead? He mentioned me in the article as I beat a number of guys shooting semi auto guns, pretty cool, I'll never forget those days. I shot 10,000 rounds in 3 months time getting ready and shooting second chance. All the big name shooters were there too, Jerry Miculik, Jerry Barnhart, Massad Ayoob, even Ted Nugent was there one of the days. the shoot was like a week long up in Central Lake Michigan. Also there were not 5 pins lined up in a row, we shot 2 tier tables, one pin in upper left corner on the top tier, 3 across the bottom tier, and the fifth on the upper tier right hand corner so you kind of shot in a U type movement. Saw Jerry Miculik do 8 pins with the 6 shot 625 in about 6.5 seconds , with a reload of course.What a blast, miss those days