Got amazing results with the 168 gr Sierra Tipped MatchKing. 43.5 gr Varget, 2.900"ish COAL (can't remember exact coal but around there), 0.018" in the Lands (but not jammed in the lands).

Tried this load last weekend in some VERlY cold weather and every 5-shot group was one hole at 100 meters.
It was -10 F and -15F with the wind, and light blowing snow.