Finding the best ammo for your rifle is a difficult task. Firstly, you have to actually get your hands on some decent ammo and then worry about price.
Getting your rifle in tune with the ammo you have is at times a daunting task as you have to be sure you are able to adapt to outside wind conditions.
Most shooters will often choose one brand of ammo and stick with it, but you have to take in account availability of the brand you prefer. I am always open to change but I also have my preference of ammo. I will use one brand for competition and a cheaper brand for practice.