The regulation on the RBL professional is adjustable. So pretty much any load could be used.
They are nice guns for the money. A 20g sabot is plenty enough for whitetail. No need for 12g. Really.

And, yes, pretty much every county in cny and wny has opened up for rifle.

By the way... "weapons" are used on people. Please do not refer to this or any other aporting firearm as a weapon.

B.Dudley