I am not having the best luck this year with anything shooting related, anyway. I am shooting the above rifle and had some baffling results yesterday. I was shooting 300 grain bergers .020 off with 93 grains H1000, and cci 250, numerous times, I have shot this load and it has never shown any sort of pressure signs. Well yesterday, I fired 10 shots over a period of time. The first say 7 there were no pressure signs, then the last 3 had extractor marks. Also, my velocity seemed low, around 2810, with a 34” barrel. And my extreme spread was terrible at 60 fps. I am wondering what the problem can be? This is a new 8 lb container of H1000. Last year, with 300 smk’s, I was getting single digit ES at 2950 fps. That was with a smaller container of powder though. Same lot of primers. Each charge is measured on an rcbs electric scale. So here are my questions, can the powder lots be that different? Can the bergers be doing something different than the smk’s? Can the electric scale be off? When I have done load development the velocities usually correspond and go up each half grain or grain of powder increase, and this spread was higher than the powder increase of 1 grain usually. I am just pretty baffled by this. Another note about my sizing, I was using a full length bushing die, but I found that it worked better when I used the expander ball again due to the necks having a lot of carbon when only the bushing was used with no expander . But lately, I have been only neck sizing, I felt I was working the shoulder too much when I did not have to full length sizing. Can this be as simple as I should use the bushing die again with no expander, and not size the whole neck as not to hit the shoulders and see what the ES is? Or is there something else I should look at first? actually, I thought about it some more, and the bushing die shoudl not matter, as I got this single digit ES from virgin brass, and I used the expander to open it up then bushing, then expander on the way back out, so my statement above may not hold water, figured I should add this in, will help answer that question atleast. thanks for responses in advance.