I consider the "L" frame Smith to be the absolute best platform for the .357 Magnum (no disrespect to those that choose the "N" frames). I particularly like the cylinder length on the "L" frames that doesn't limit me on what bullet I can use. I use nothing but home cast bullets in my revolvers.
You're right. Isn't it weird that the 627-5 has a cylinder that's 1.575" long but the 686-6 has a 1.625" long cylinder. I noticed this when I loaded some Keith style SWCs & they barely fit in the 627's cylinder. You'd think the N-frame's would be longer.

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