One additional comment I'll make is a repeat of previous comments on various powders:
I live in Montana, which has the widest range of recorded temperatures of any state in the U.S, from -70 to +117 Fahrenheit. While I haven't hunted in quite that range, have from around -40 to +110.
While most modern rifle powders don't vary much in performance from the 20s to 80s Fahrenheit, many do beyond those parameters--which often results in changes in point-of-impact and accuracy. I know this from actually testing various powders in temperatures from around zero F. to over 100 degrees.
If anybody's hunting doesn't vary from the 20s to 80s, then the powder doesn't matter much--and even some parts of Alaska don't vary much from those parameters. But I would tend to use RL-23 over other powders mentioned (including RL-26) if any hunting would take place colder than around 20 degrees.
