Your load of 43.0 gr of Varget is a good starting place. I would suggest starting with a 0.020" jump and start working up in 0.3 gr increments until you get the best group. Once you get the best group with charge, start playing with the jump and jam. It doesn't what works in our gun when you are fine tuning your loads. Each barrel has a mine of its own. My particular is 44.5 gr RE-15, Fed 210M, 175 SMK in Lapua brass. I use 44.0 gr of Varget, I prefer RE-15. I run with a 3.005 OAL and I still have a 0.015" jump. Experience a way and have fun doing.

Luck, Tim