I have used it in a "pet load" for my 7mm Mag rifle and have noticed the following:
a) It's real performance does not much what QuickLoad estimates. For example, my load of 65 grain N570 produces ~ 2870 f/s wheres quick load predicts only 2670 f/s velocity and a peak pressure of 36500 PSI.
b) it produces very accurate groups
c) the barrel looks more dirty than normal after 10 shots (perhaps indicating substantial unburned powder? Quickload predicts that only 87% of the powder will be burned in a 25.5 inch barrel)
Does anyone here use N570? What are your experiences?
