My mg 18a harms way was beast with 100 in the mag. Now that did wreck in crucible mind you, id be lucky as f to use all its ammo before death. So thats why they killed it i think. My LDR had field scout and final round. With 6 in the mag i hardly ever got my final round perk except for bosses. It also had surplus. Quite a good sniper in year 1.