There's a Model 64F-XP package gun review here on the site, but you have to become a paid member to access it. Regarding you other questions, the truth is that the Model 64 has basically remained unchanged for the last 50-60 years from the days it was originally a Lakefield Arms model (whom Savage bought out). Savage didn't even want to send me one to review because they know it's a very dated gun and not of the best design, but somehow they still manage to sell enough of them each year to warrant keeping it around.

If it were me and I was looking for a semi-auto 22LR I'd go the tried and true route and look no further than the Ruger 10/22. There's a ton more aftermarket support for it (there's none - zero for the Model 64), they're reliable as all get-out, and every one I ever owned shot plenty good for head shots on bushytails.