243with 58 grain V-max over varget.
It's even better when loaded with W760.
How so?
I have to admit a love affair with W760 powder and the 243, especially in the lighter bullets. It meters easy, much better than Varget and other stick powders. It's all I use in bullets from 58 to 85 grain, and it works in every 243 I've ever loaded for. I realize it's supposed to be temperature sensitive in hot weather, but I don't shoot in hot weather, so I've never had a problem.