I would not worry about shooting any factory but steel. If you measure a lot of the 16 hulls are in between 2 9/16 and 2 3/4. Most likely due to using imported hills which run 65-67mm instead of 70. The NID is a modern design, built with excellent steels which should be fine with most factory loads. I would not include a heavy diet of magnum loads but a few won't kill it. It might smack you a little more than you like. If in doubt measure it or just shoot RST loads.