620 vs 686 SW
Can someone elaborate the differences between these two models? I know the 620 has a 7 shot cylinder and semi-lugged barrel. The spec sheet also says 2 piece barrel. Is the 686 also a 2 piece barrel? Is the cylinder a larger diameter because of the 7 rounds? I have shot the 686 but my local range doesn't have a 620 on hand.
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