While I would absolutely not trust the above quoted report, the premise does hold validity with regard to "velocity." There have been dozens of more scientific, "apples to apples" comparisons done and the sweet spot for velocity with .22 LR is generally (not always) 14-16"... Accuracy is another matter, at a given distance say 25/50/100 meters barrel length may have the least impact on accuracy, compared to other factors, such as bore and steel quality, fitment, crown, chamber specs and leade Etc... BUT we have noted deteriorating accuracy with our shorter barrel guns as the distances increase... That has been our experience with the dozens of rimfires that we have built and tested. The guy quoted in the OP's first post, is quoted as openly testing a "PROHIBITED" weapon (unless he is not in Canada?)... Look at the specs for the final gun tested... I would not make any decision based on that info... Shooting .2's and 1/4's at 55 meters with "slapped-on" stock barrels and other mutt barrels in a standard stock? Not likely... Sounds like a kid who wanted to do some online bragging and made up some numbers.
