If a buck is killed with a bow and is measured officialy by a official scorer then it can be entered into P&Y

That being said if you know how to measure correctly you can figure out the apporxamate score. official scorers don't charge to score so look up one that is local if you have one to score and ask them to show you how. Or look on Pope and youngs website to see how its done.

But a 125" buck is P&Y class.