Originally Posted by
toytruck
When I got my Optima V2 pistol last March I inquired from CVA about the bore diameter. They told me via email that the Optima's were .500 bores. I haven't slugged mine but did check with a caliper an the best I could tell they were correct.
not saying that i will but that could be opened up with fire lapping the barrel if one chose to want to shoot slip fit bullets ?