I have a 7mm STW that I have purchased but not received yet. The gentleman that I am buying it from informed me that he had 3-4 boxes of reloads that came with the purchase. He explained to me that when he had the gun built there was no brass in production and he stated out using the 8mm Remington brass but he has not happy with it. He switched to 300 WBY brass that he ran through a RCBS 7mm STW full length die once and it was good to go. Can anyone verify if it is that simple to convert WBY brass as I have a fair amount of it and will use it until I can get some Nosler brass from Shooters Pro Shop.