I worked for a rifle tuning shop while in college, Winchester was our go to unless customer wanted lapua, etc...the amount of Winchester brass I weighed and we went through was ridiculous, I've weighed and prepped a stupid amount of it. There was always 6-7 grain deviation with it, and this was 20 years ago. But when you went through so much of it, it was easy to have 100 pieces of each weight bagged up and ready to go, etc. I can certainly understand the frustration if you only needed one bag and had that much deviation.
