Ok so I'm working up a 215 berger hybrid load in my 300 win mag. Components are virgin norma brass, H1000 and Win Lrg rifle mag primers. I did some quick testing last weekend loaded some .006 off the lands and worked up from 73.5 gns in .5 gn increments to 75.0. My best groups at 100 yards were 75 gns at .6'. My chrono took a **** so decided to stop there, find the right seating depth then push the charge weight when I have a chrono to look at fps, es, and std. Ok so I decided to try the berger seating ladder this weekend. loaded 7 rounds .010 off, 6 rounds .050, 6 rounds .090 off and 6 .130 off. I started with a clean bore. Fired 4 at .010 off and got my worst group at 3.475, next 3 at .050 group was 1.55, next 3 at .090 was 1.075, next was .130 at 1.109. Then started over, 3 at .010 got 1.32 ( two shots in the same hole and I pulled the 3rd shot), next .050 got 1.00 (again 2 through the same hole and one slightly off, didn't feel like I pulled it), next .090 got 2.435 wind started kicking up, last .130 got 1.145. These were at 200 yards. I think the first group was the product of a clean bore, seems like it shot better with all jumps with some fouling. The group with the most potential was the 2nd group at .010, I really think if I wouldn't have pulled that last shot all 3 would have been touching. The most consistent was .050 off, but I was really surprised how well it shot all the way through the ladder. I'm thinking of doing the same thing next weekend but going from .010 to .050 in .010 increments with a dirty bore. What do you all think?