Thread: 45 Long Colt
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Old April 16, 2013, 12:56 PM   #61
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Join Date: May 12, 2002
Location: MO
Posts: 4,895
It could very well be the gun, Wally. In 1998 I had a brand-new 5 1/2" .45 Blackhawk with two chambers bored not only off center-but, off-axis as well. It gave 14" 100 yard groups from ammo that had proved capable of 4", in a duplicate, non-screwed-up 5 1/2" Blackhawk.

I would go all over that cylinder with a good set of micrometers before I damned multiple bullets. If it checks out OK, have your cylinder throats reamed to a uniform 0.4525" and I'll bet your groups with all your bullets will shrink and round up nicely.
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