Regarding the thread about .25s and .32s being responsible for deaths in the US, in the 1970s, two US sociologists did a study and published a book of the criminal use of firearms, by interviewing convicted felons in US prisons ("Armed and Considered Dangerous"). As far as I know, this is the only neutral, large-scale academic study of the criminal use of firearms in North America. Overwhelmingly, the convicts who used guns in crimes told the interviewers that the guns they wanted to use, and went to some effort to obtain, were the same guns the police had. They were revolvers of .38 caliber or greater, and pistols of 9mm or greater. And one of their findings was that criminals avoided civilians they thought were armed. The down side of that was that US civilians rarely lock up their guns, and gun criminals knew that by breaking into
houses when people weren't home, there was a good chance they'd be able to steal a gun they wanted.
It would be nice if such a study could be done here and the results publicized. And it would be good for the gun fraternity to recognize that the provisions of the law that mandate some minimal amount of safety training, and locking of guns away from ammunition, has value.