So I spent all summer getting my 7mm rem mag dialed in with a 160 Accubond. Settled on a load with RE 26 as I was very happy with the accuracy. I was getting a muzzle velocity of 2950 FPS, which I was also happy with. After going through a few one pounders of the stuff, I finally invested in an 8 lb jug, which I figured would last a while. I've gone out 3 times now, and I am consistently getting 2850 FPS,100 FPS slower than what I had been previously loading. What gives? I haven't changed anything else except the new powder. Is that much variations between lots to be expected? Any thoughts would be appreciated. Thanks guys.