I forgot to mention that my Model 70 has a pretty generous chamber and a 24-inch barrel. Fireformed R-P brass had a capacity of 69.0 grains of water when fired in my old VZ24 econo-custom, and the same R-P brass fireformed in the Model 70 would hold 70.4 grains of water. I am using Nosler brass now, and it's capacity is 72.0 grains of water when fireformed to the Model 70's chamber. That could be important.