I have killed deer with all 3 weights and all 3 versions of the 300g. The most accurate I have found of them all is the .430 300g. I DO like the .452 300g MAG but some folks do not like them because they don't believe they open up well enough on whitetails. All of my shots are quite close-95% are less than 50yards so I have not had any trouble with the MAG opening up and it's wonderful for taking out shoulders.

I have no reservations hunting with any of them, but if I was forced to choose just one, it would be the .430 300g. My $0.02 if you wanted it not.