Ok, so I'll be going on a Prairie Dog outing in just over a month and I want to load up 300-400 of either 75 or 87 grain V-max to take along. My barrel is a 24" 1-8 twist and I'm guessing it will like the 87's better but maybe it will shoot the 75"s just as well? Any input on that would be great. What powders seem to work best in a 243 for that weight range of bullets. Must be a very temp stable powder because I may be shooting in some pretty HOT conditions. Should I just try some Varget and call it good? Any others I may be overlooking? Thanks.