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george wrote:Any comments on the recent chart in American Handgunner magazine listing the .22 and .32 as having the best one-shot stop percentage?

Yeah, it's nonsense. I haven't read the article, but my guess, for the .22 at least, is that it's a product of usage rates and the definition of one-shot stop, and maybe being easy to shoot. One-shot stop is a myth. Given the same level of marksmanship, the dynamics of bullet weight, diameter, and speed generally mean the bigger and heavier the bullet the greater the likelihood of causing enough CNS or vital organ damage to stop an assault. What is more likely to stop someone in their tracks --a 22 LR or a 50 BMG? Certainly you can stop someone with a 22 and good shot placement, but again, assuming roughly equal marksmanship, your odds are better with a larger caliber (with perhaps some exceptions, like a .25).