I am building a 223 to hunt in Montana and Easter WA in the winter and summer. There are chances I could be in weather around or below zero degrees. Is there any small rifle primer that is better than another? If it does well in the heat that's even better. I could be looking at a temp change from zero in the winter to 90 degrees in the summer. From what I understand the 223 takes a small rifle 7 1/2 primer. Can a guy go wrong with a CCI, Federal, or Rem primer? If there's a "223 FAQ" I didn't see it. I tried the search with 223 primer.....I think that popped up about 1/2 the threads for the last 3 years, lol. Thanks in advance.