I sent Winchester a complaint, also for defective .300 Winchester brass, on June 14, and received a response from Greywood Sporting Group in Peterborough last week. You will have to send them the defective brass and the original bags it came in once they get a file number from Winchester. I had 35 defective cases out of 4 bags. The defects included split necks below the trim length, shoulder and neck defects that were detectable on the inside of the brass which I am sure would result in a case failure upon firing, and the majority were cleft shoulders. Other issues I ran into were no fully pierced flash holes, very rough primer pockets, both of which I resolved with my uniformers, loose primer pockets, and severely dented case necks from rough handling prior to me getting the brass. The gal who emailed from Greywood said they would issue me a check for postage and for the defective brass made out in US funds, and it would take a month to 6 weeks for me to get it. In the letter I included with the brass, I said that brass was not locally available, and I needed the brass not the money, so I declined the refunded postage, in hopes that they send me a replacement bag of brass, and that 35 pieces out of the 50 will be usable. I also strongly suggested in the letter that Winchester improve their quality control, and stop packaging their brass in plastic bags, when competitors can package in plastic or cardboard boxes and still sell their brass for the same price.