I am looking for some insight on your experience loading for the .300 wIn mag. My rifle is a 700P with a 26" 1:10 twist barrel. And I will be using 180 gr sierra gamekings, win mag primers, and remington brass. Getting ready for a wyoming mule deer hunt. I am trying to decide between IMR4831 and H4831. Sierra says that IMR gives the best accuracy, but I like the temp stability of the hodgdon. I will be shooting in temps anywhere between 0-90 degrees and elevations from 1,000-10,000. What have you guys gotten for extreme velocity spreads with those two powders, and what would you recommend? Thanks in advance for any input.