I didn't know they made one with a 16-in barrel, but shooting lefty I don't get a lot of choices anyway. I HAVE thought about cutting my 452 American LH down to 16, though. I saw an article in a magazine some years ago about starting with a long 22LR test barrel, shooting groups over a chrony, cutting an inch off, recrown, repeat. The author's data showed optimum length for velocity was about 16 or 17 inches. The velocity only dropped a little with increasing length, but the stiffness (and accuracy, in theory) is greatly reduced with a 20-incher of the same profile.