The 8208 groups well at 100 but I don't see anyone using this powder in a dasher. This powder shoots well with short Rangers and in my 308 at long range with the 155's. I hope I'm not missing something trying this powder in my Dasher.
Seems to me the loads seem very mild, to the point of being no more than a standard 6BR. I have run a medium load of 33.5 of Rl- 15 and a 105 class bullet and a cci 450 in Lapua cases this is a 2980 node area in a 28" barrel for over a 100 firings and are still using them for testing……… jim
I don't think the annealer has a lot to do with the life of the case as much as the proper amount of sizing. Over working the brass leads to failure. But the Bench Source anneal does help. jim
Full length resizing with a proper custom die that only moves the brass under 2 thou helps maintain case life,
Yes in cartridges greater than a 6ppc, dies do make a difference,
Jeff
Shooting and sizing the neck work hardens the brass. Annealing reverses the effects of work hardening, making it more ductile. In addition to permitting greater control of neck tension it will postpone/prevent neck splits.
Why is the Normas SD so much larger compared to the lapua Brass?Lapua brass av 2938 fps ES 28 SD 8 accuracy 10 shots 0.330"
Norma brass av 2949 fps ES 47 SD 12.4 accuracy 10 shots .485 (9 under 0.265")
Why is the Normas SD so much larger compared to the lapua Brass?
TBeghtol...
Thanks for sharing this data. Can you provide your basic reamer dimensions and tell us how you are resizing. Also, how did the primer pockets feel on the second loading?
I ran into the same thing. Big spreads. I think the Norma brass needs to be annealed. Someone asked if it was annealed from the factory way back on this thread and I never did see an answer. The entire case feels very hard out of the box and bullet seating was very inconsistent. My Lapua gets the same way after a few firings and the spreads get big. In my case I am using a 1.570 chamber and seating flat base bullets way down in there. The problem is not as profound with boat tails as the bearing surface is much less and not as deep. I am annealing mine (both Lapua and Norma) before I load them again. FYI - I had to lube the necks with graphite powder to get reasonable seating pressures.Why is the Normas SD so much larger compared to the lapua Brass?