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Old April 5, 2013, 06:08 AM   #19
B.L.E.
Senior Member
 
Join Date: December 20, 2008
Location: Somewhere on the Southern shore of Lake Travis, TX
Posts: 2,013
Unfortunately, those 60 grain slugs of Aguila SSS bullets keyhole at 25 yards when shot out of my rifle, which has a 1 turn in 16 inches rifling pitch.
Oddly enough, they don't keyhole when shot out of my Smith and Wesson model 17 revolver. I'm not sure what the rifling pitch is, it's hard to measure it accurately when the barrel is so short that the rifling only makes a half or third of a turn through the length of the barrel.
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