You can't inform whether a Vmax and Zmax are the same thing by posting a picture of two completely different bullets.
Go to Midway and look at the 50gr Zmax and Vmax. Both are boat tail, no canneluere. They are exactly the same externally. I've bought large quantities of both and seen this with my own eyes. I've mixed them in a mag and shot them into the same group at 300 yards. I've smacked a couple hundred prairie dogs with each and cannot discern any difference in terminal (splat) performance.
This has been discussed here before, with the pics to illustrate:
http://www.predatormastersforums.com/forums/ubbthreads.php?ubb=showflat&Number=2678122
