It is unfair just as chaffing, it is a no- problem at all.
That said, I don't have any issues with CMDRs using the tools on hand. I'd use premium ammo myself, if I saw a need for it, but as it's rarely a deciding factor in survival of my vessels, I almost never use ammo synthesis of any sort.
I won't use premium ammo cause I'm too lazy to grind even more.
Better lose some millions to a rebuy than my sweet sweet precious mats![]()