We've got P&Y caliber bucks on our property and we've harvested a few of them over the last few years (None with a bow). We've taken a couple in the mid to low 140's and one around 135". I've seen a few more that we haven't been able to close the deal on. As for B&C, that's another story. I think the potential is there for one to perhaps grow that big, get that old, etc. but the odds are slim. I was watching Bass Pro Shops "King of Bucks" just this morning and they gave a statistic that only 1 in 36000 bucks will grow his antlers to 150". Now I don't know how they come up with that stat, but I'm sure that 170" is a much worse statistic. Just last year, I know of two different bucks that were shot within approx 15 miles of my property that grossed over the B&C minimum, so there could be one roaming around my property.