Macro your cool downs.
/macroicon "Rapid Fire"
/ac "Blood for Blood"
/ac "Hawks Eye"
/ac "Raging Strikes"
/macroicon "Wildfire"
/ac "Rapid Fire"
/ac "Wildfire"
/macroicon "Clean Shot"
/ac "Reassemble"
/ac "Clean Shot" <t>
/macroicon "Ricochet"
/ac "Gauss Round" <t>
/ac "Ricochet" <t>
/macroicon "Reload"
/ac "Quick Reload"
/ac "Reload"
/macroicon "Head graze"
/ac "Suppressive Fire" <t>
/ac "Head Graze" <t>
/ac "Leg Graze" <t>
The above graze macro will use suppressive fire (stun) when in range or Head Graze (silence) when out of range.