Gentleman, Brief history: I bought a Savage 110 FCP in .338 Lapua a few weeks back. Now after compiling some reloading equipment I shot a very nice (in my eyes) group at 200 yards (my zero). Load: 92.0 gr Retumbo 300 gr Berger OTM 3.750" COL Lapua Brass Now having said this I shot just under 0.5 MOA (by my calcs, ignore the 0.27 MOA on picture used wrong calculation) with this load and was going to tinker with it a little more but ran out of powder (only bought 1 lb of Retumbo in case it liked the H-1000 better). So I just received another 1 lb bottle of Retumbo and loaded some rounds with 92.0 grains, same bullets, same COL and they shot terrible. It seems this new powder is somewhat hotter as I am getting primer flattening and a sticky bolt which did not happen with the original bottle. I have narrowed it down to the powder solely because nothing else has changed. The only other variable was that the first time I shot the cases were brand new Lapua brass and this time with the new powder they are once fired (trimmed to spec.) brass. Any advice? Buy 8lb bottle and start load development over, so once load is figured out I should have plenty of powder left? I'm afraid I will get this bottle of Retumbo shooting good once I figure out the load then will be out of powder. This is the first time I have reloaded and I have made sure the process, consistency, tolerances, etc. is the same. I am very frustrated because it took a while to get the load right and if this happens everytime I need more powder it will take a few weekends to get the gun shooting good again. Please feel free to give any advice.