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Old March 21, 2013, 07:26 PM   #26
oldgunsmith
Senior Member
 
Join Date: January 9, 2013
Posts: 278
My SP101 gets .38spec. mostly. The .357 Mag. was invented when they discovered that slow burning powder and a long barrel could produce magnum velocities. In a short barrel, the bullet is out of the barrel before all of the powder is burned, producing a larger ball of fire from too much powder burning outside the barrel instead of magnum velocity. My 4 5/8" Blackhawks do better with magnum ammo, but still not as good as my 8" Contender.
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