With well over 200k scout rifle kills I will say Booleon is 2nd tier. There are easily 4-5 year 2 scouts that put it to shame. I used it early when TTK dropped and then as my level grew and I acquired more scout rifles it eventually was infused. You like the higher impact slow ROF variety then two suggestions for you are Covalances Duty and Cocytus. Neither take an exotic slot.