Nicely done testing:
- five shot groups, not three
- more than one group fired for each load
- all groups shown and considered
Nice choice of ammo:
- good quality brass and primers
- use of a known-to-do-well powder
- choosing bullets known to be pretty tolerant/unfussy, seating them to std. magazine length
(the 45.5 Varget sounds great for the 155s but it strikes me as possibly being too hot for the 168s... how did you find them?)
BTW the shooter, rifle, scope and ammo seem to be doing well too!
Just curious if the "SMK 155" is the new 155 (Sierra #2156) or the older one (Sierra #2155).