SakoVarmint
The Hornady A-Max is a target bullet not a varmint bullet.A is for accuracy V is for varmint kinda thing.You are correct in that you noted high velocity is the key to bullets exploding on impact rather than other common myths about bullet RPM.The A-Max doesn't have the thin skin(jacket) of the V-Max and therefore it doesn't expand as fast.If you go to the Hornady website at
www.hornady.com you will see it is only made in long range target weights except for the 22 caliber 52 gr bullet which is the most common size of 22 caliber target bullets.You asked the question so i gave you the answer if you don't want to hear the truth choose whatever bullet you want and good luck.
Lynn