6XC differences

[boltfluter]

I put 900 rounds on 30 cases formed from Lapua 308 Palma brass. ON a 31", 8T barrel with a Mike Ezel tuner, Rem 7 1/2, 107g sierra, I had nodes at 3050 fps and 3150 fps that shot bug holes with H4350. Then I started shooting R#17, and found a node at 3250 fps. At 3250, I put 400 rounds on the same 30 pieces of brass. I started loosing primer pockets after many firings(12+) with the 3250 fps load, 900 rounds on the barrel at this point. The barrel had started to get some very minor fire cracking with the R#17. 13 of those original 30 pieces of brass are still being used.

The combo above with the Ezel tuner, was my first experience using a tuner, and there is not much rocket science to using a tuner.

I have had at least a dozen, if not more, custom BR rifles in 6 PPC. Not one of those 6PPC BR rifles ever shot as well as this 6 XC with the Ezell Tuner.

My reamer is a PTG, my dies are Whidden...stuff just worked. I used a set of Paul Bike form dies.

I was very shocked at how accurate the 6 XC combo is. I thought I would do an experiment to see how much the quality of the brass weighs in the Accuracy equation. I formed brass from PMC 308 Win brass, Lake City(same year), and a real wild card, Chinese 308 machine gun brass that is once fired.

All brass shot very, very well, and I did not see flyers like I was expecting. The Chinese machine gun brass lost primer pockets in two firings. I put 9 firings on the PMC and LC brass at the node at 3150, and got bored with the project, with the primer pockets still tight.

Groups in the very, very low 2's are the norm with the PMC and LC brass, and I did cull the LC brass for flash holes that are off center. Of course, all brass is neck turned.

Nice write up, and thanks for sharing your hard earned information.
Paul