243 Loads?
Hunt,
I am in the final stages of load development for a Varmint weight 24"
243. With 85gr SGK HPBT I found RL19 the best among Varget, IMR4064, IMR4831, and RL19.
With 95gr Nosler BT's I found IMR4831 the best among Varget, IMR4064, RL22, and IMR4831.
I realize you want to shoot a lighter bullet, however, IMHO better accuracy will not be found with one bullet and one or two powders.
I mentioned "final stages". There is too much detail to go into all of my steps.
GOOD LUCK and GOOD SHOOTING!!!