I'm try to find the simple logic in the mysterious world of reloading.
in reloading for my hunting rifles I select my bullet for terminal success, either small groups for varmints, or predictable expansion on game animals, then I search for the most consistent load; consistent point of impact, small ES on the chrono, hopefully with similar results at summer temps and winter temps.
Once finding a good load, and I eventually run out of powder, I try another jug of powder, sometimes the same type/new batch, sometimes a different type (less temp sensitive, or one of these new "clean burning/less fouling" types). I use the same rifle, same bullet, same cases, same primer trying to achieve the same velocity I had success with. Once there I get the same consistency only about 50% of the time. It feels like starting load development all over again with every new jug of powder.
My question:
Why wouldn't the best consistency of any rifle/cartridge/bullet combo be the same with any powder that can achieve the same muzzle velocity?
