Rounds wont load - Nosler Trophy Grade .300 Winchester Short Magnum 180 Grain E-Tip Brass Cased Centerfire Rifle Ammunition

I bought 4 boxes of this ammo for my Browning A-Bolt II. Got it to the range and could not get the bolt to close on 8 of the 20 rounds. The 12 that I did get to load were very difficult to cycle, tried other rounds from all the boxes and the same problem. When I got home I took measurements of the cases and found that the brass is actually thicker than any other brass I have from Winchester and Federal so the diameter of the neck is actually too big to let the round seat in the chamber. Very disappointing as I spent well over $300 to get this ammo and it is useless.