I will try to make this as simple of a question as possible. I bought 5 lbs of raw un-alloyed lead. I put this in my Lee pot that was cleaned before using this lead. I used only this lead. I cast 405 gr. 45/70 bullets. Air cooled. When I was done with the 5 lbs, I was done. I then started sizing/lubing them in my Lyman 450. After I had sized for a while, I decided to start and weigh and sort them and put them in containers because I have limited space on my bench. Here's where it gets strange and my question. I weighed and sorted about 2 dozen bullets after being sized and lubed and came up with a variance of 8 full grains of difference. I have never cast with raw lead and have mostly used ww. My variance with it has been 4 full grains over a run of a 100 bullets. So is this acceptable for raw lead and a norm or is there something wrong going on here with either me or the lead. Please comment.