So, today I tried a few new (and some old) loads. Size .266, Sages GC, dip- lube, top coat of tumble lube. Visual bullet sorting only. Collet sized Norma range pick- ups, expanded/flared with NOE .268x.264. CCI LRP. COL jam- length. Chronoed the fouling shots (accuracy testing still has priority), but only one shot of each load- rough indicator, at least. Light cross wind. Some chrono data:
Viht N110, 15grs: 1570fps
Vectan tubal-3000, 22 grs: 1660 fps
IMR4064, 27grs: 1742 fps
Viht N120, 18grs: 1600fps
The idea today, was to make loads producing similar pressure levels but with different pressure curves. I don´`t know if I succeded in that....
N110 14 grs (2x5 shots) produces 4 shots close, an one flier- around 2 MOA with the fliers.
TU- 3000, 20 grs gave a 5- shot 2 MOA group. The chronoed 22grs was probably a bit to hot.
IMR 4064 26+27 grs was obviously to hot for the alloy
N120, 17grs gave the best group today, around 1,5MOA.
It seems, with this bullet, I have a tendency to get fliers. I will now try to solve that. It might be a lube issue (but this lube functions very well with other bullet/cartridge combinations), it might be the gas checks (very shallow cups, still not sure I trust them). At least, I get accuracy with this bullet that would be OK for a practice round, and I think there is more potential here. Will try some other gas checks next time (Hornady, and home- made with different materials), I think.