Mall Ninja, good stuff! If what you have works. stay the coarse.I got my 6.5x47 in early 2016 and it was a 9 month wait for the rifle so I read all the stuff I possibly could on line about reloading for it. A guy from TBAC had done a lot of testing and recommended the CCI 450, so I bought 1,000 of them and I’m down to about 500. Im sure the 205s are good too but I was just totally infatuated with the “magnum” status of my new primers! What a Mall Ninja, huh?
If it is below zero I will be inside doing things, so no clue there.FYI From the mistakes that turned out well column. I grabbed a box of 205 match primers instead of my usual CCI 450's for my RL 23 6.5 CM loads with 140 bergers. I didn't find the error until 15 rounds were loaded so out of laziness I thought I would try them and hope for no problems. I found that I got an extra 35 fps and SD of 4 and ES of 9 and my 200 yards groups were 0.24 MOA. (all improvements over the 450's) I have also read about ball and slower powders needing a magnum primer in the small primer Creedmoor case but in some situations this isn't the case. If it was below zero in December there might be different outcome???