Thread: Factory loads exceeding reload speeds with less pressure signs

You could try Leverevolution powder, it tends to give very good results in shorter barrels, I currently use it in a 16.5" 223 and the results were nothing short of amazing - same in a 6 ARC I ran for a while. It is a similar speed to AR2208/Varget (that DOES NOT mean loads are interchangeable) and there is load data out there for it in the 308.