Interesting article on can the new Python pass the 2,000 round challenge. I know the older pythons would have an issue of the cylinder moving when you held the trigger back, wasn't supposed to move like this due to the design, when you pulled the trigger on the older Pythons, the cylinder moved just a bit before final lock up, then it didn’t move, solid lock up, but after some wear, the cylinder would move instead of staying tight, which in turn also lead to timing issues. The new Python shouldn't have this issue due to a different design.
An Official Journal Of The NRA | Can the Colt Python Pass the 2,000-Round Challenge? Part I
In this two-part series, Caleb Giddings takes Colt's new Python through the 2,000-round challenge to see how well it stacks up.
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