SSA is all small primer as far as I know. SSA is good stuff.
140gr is too heavy for decent velocity in the 6.8. 85-120gr works best.
People seem to like the Sierra 110gr Pro-Hunter for deer. You could also look at the 110 gr Accubond, or the Hornandy 120gr SST.
There is a ton of load data sticked at the top of the ammo section.