I think it's mostly genetics. Look at the top typicals. Mature deer with 200+ inches of massive typical points. 5X5s and 6X6s. On our property we had a 3X1 a couple of years ago. A few years before that we had a 5X2. Those were non-typicals but they started getting freaky in their first couple of years. Maturity will bring out some forked tines and some stickers, but if it's going to turn into a Beatty buck, you'll see thatin the first 2 or 3 years. The Hanson buck wouldn't turn into the Beatty buck if he was given 2 more years.