Well, there you go; plainly, not everyone is disappointed! This is an example of a situation where the increased capacity can pay off. With the very slow burning Retumbo, the Rem Mag case will likely not hold enough to generate decent velocity with the 140 grain bullet because it won't develop enough pressure. The use of a slightly faster powder will get the pressure up; along with the velocity. Because of the shorter pressure curve the velocity will not be equal and I doubt one could get much over 3300 with a 140 from a 7 Remington at reasonable pressures. I have seen guys exceed 3400 with 140s from a 7mm Weatherby but I don't think the pressure was really reasonable! Regards, Bill.
