EMP(shields), Phase Plasma, Fusion(armor) for close range DPS
Depleted Uranium for diverse damage, midrange, good tracking. I don’t like Titanium Sabot because it only has 2 damage types.
Proton for long range.
The other long range ammo not for the same reason as TitSabot. You can even ignore this ammo on T2 weapons because Tremor/Barrage offer more DPS and the tracking penalty is hardly an issue at those ranges.