Rounded tips canhappen fora variety of reasons. Like others said could be genitics. Alot of times deer will chip the ends of their tines and thru normal wear and tear they become rounded. another possiblility is that the deer just wasnt fininsh growing this antlers before the velvet was shed. Most times the antler are fully developed when the tips become pointed under the velvet but in certain instances the burr cuts off blood supply before the tips finish growing...which leads to rounded tips. Really has nothing to do with age.