I have always found that with a round the size of the 22-250 and up when targeting yotes and foxes, its is bone frags that will tend to do MUCH more damage then the actual bullet.
If you slip a bullet between the ribs you generally will have very little damage, if you contact any major bone at all you will get severe pelt damage.
The reason I personally feel is the extreme expansion of these bullets on even light bone. I have always been a fan of heavier, controlled expansion bullets for protecting pelts. The moderate to high velocity of these heavy pills seems to be much more user friendly then the hyper velocity tipped bullets at least in chamberings such as the 22-250 and up.
If your serious about pelt hunting I would go to a stouter bullet. They gnerally cost more but for yote hunting where the pelt is the trophy so to speak, this slight increase per shot will make you more money they you spend in less pelt damage.
My idea of a pelt load is a heavy stout bullet at 3000-3300 fps with a high BC if possible.
If I just want to kill yotes its a fast expansion bullet!!!
TO your direct question, I have not seen much difference between the A-Max and the V-Max but I believe there is a slight difference in the internal design of the tip but I have not cross sectioned them to see.
Kirby Allen(50)