Mike, I'm just skimming your posts here but are you planning to hunt year round with these loads (I'm presuming primarily in Texas)? If so then I would not necessarily only do my load work at ~75F as was suggested earlier ... if you want to know what's likely to happen when you reach out more than ~200 yards, you're likely going to want to know what will happen when you're pig hunting at 95+ degrees on a summer night all the way down to the coldest temps you can imagine hunting in during Jan-Feb at the end of our Texas deer season and beyond into feral hog/exotics post deer season.
Keep in mind that you can get some idea what colder temp behavior might look like if you're doing something to control the temperature of your ammo up to the point you chamber it and pull the trigger. e.g., a friend with a range setup off the backporch of the ranch will have his ammo inside the house at ~75F, walk inside, grab a round and shoot it and not be too concerned that its 105F on the back porch.
Likewise, he can stick another box of ammo in his refrigerator to test ~35F. That gets tricky with the humidity, though.