Yesterday, I fire formed some new Norma 6PPC brass. At first I made the mistake of going too light on the load, and it did not come up to the case "headspace" that I was looking for. I increased the load, and it came closer, but no cigar. Then I raised the load one more time, and got there, at jam. At that point, I decided to do a little seating depth testing as I finished up my forming chores, backed off to light marks on the double ogive 68 grain bullets that I was using, and fired two with the same volume of powder. The difference in pressure, from the seating depth change, was enough that I was again short of my goal, so I upped the charge about .4, and the case dimensions, and test group looked fine. In the future, on cases that are not being blown out to a different body shape, I will simply load 'em like I would normally shoot them and fire them. BTW, the Norma brass measures a full .001 smaller at the top of the extractor groove than Lapua .220 Russian, so assuming what I have been told about the hardness of the heads of these new double struck cases is true, you guys that have tight chambers and click issues may want to try some. On the down side, there seemed to be some variability in neck tension, so I may end up doing some sorting.