My favorite load in my Tikka 6.5x55 is 50g of H4831SC pushing a 140 Nosler Accubond. Not the fastest load clocking around 2700, but is very accurate.

I've also had pretty good luck with 120 Ballistic Tips and 50g of H4350. Those get just under 3,000 Fps, and also shot pretty good. My last two 5 shot groups with this load hovered between 1/2 & 3/4's of an inch.