I recently picked up a box of .300 H&H factory Nosler loads with 180gr AccuBond. They fit my stub gauge with about .003 headspace off the shoulder which is much closer than the new Winchester brass I have. They should be deadly accurate, I’m gonna shoot 3 and save the rest for a rainy day. Also picked up a box of 50 180gr AccuBond bullets. The factory loads look like they have a cannelure and the box of 50 does not. I’ve never thought of a cannelure to affect accuracy much but I wonder if it changes the way the bullet does its business when it impacts the target. Any thoughts? Do any of the factory folks ever chime in?