This round is part of a new line of ammunition, developed by Australian Outback, that leaves your barrel with the same high velocity at extreme temperature ranges. No matter if it’s scorching hot or freezing cold, Australian Outback ammunition delivers consistent extreme high velocity and ultra-reliability you demand in all shooting circumstances. For the technically minded, it’s called Ballistic Temperature Independence (BTI). But all you really need to know is Australian Outback ammunition will never let you down.