random helical path convergence eh?
No, I haven't found the answer, no way I could do the testing, not good enough at it and don't understand it well enough to try :mrgreen:
But, not withstanding the McMillan statement which can either stand on it's own or be taken for what it is, it seems exactly this type of testing has been done (thought it had but just found a reference to it). Wish I had a copy of original reports! At the risk of getting jumped on..... here's a link to another forum's thread which was having almost the exact same debate. While it was not focusing on RPM theory or cast bullets it was following a similar line and debate about converging bullet paths. I found this quote of a quote to be fairly interesting and seemed to come from an objective source (not selling something :mrgreen:). The link is to a page in the forum thread and the quote of interest is at bottom of page. It references Army and NRA testing of bullet group dispersion at increasing distances. The reference quote of a quote seems almost boring in comparison to some of this. :coffee:
http://www.snipercentral.com/forums/...r=asc&start=45