Genetics certainly play a role in determining how big a buck will be at the age of his greatest potential.
Reality is that most bucks in MT would never make 180 or more inches if they lived to be ten years old.
However, the other reality is that even fewer bucks will be 180 or more when the vast majority of them are killed by age 4 1/2.
I am just guessing at percentages here but I bet less than 5% of Montana bucks live past age 5.
Imagine what kind of quality hunting we would have if 20% of Montana bucks would be 5 years or older.
I had the privilege of archery hunting in Alberta nearly ten years ago. We were only ten miles from the MT border but the quality of bucks was amazing. Numbers of deer weren’t that much higher but quality was.
The unit we were hunting was OTC for archery and only 45 rifle tags.
Where in MT on public land can you expect to see bucks like this as representative of the mature deer? Not the all time once in a lifetime giants but the bucks you sort through on the search for a giant?
This is what age in a deer herd does for you.