Has anyone figured out if factory ammo uses powder the rest of can buy? This week loaded up some 7wsm up to max recommended loads. Then shot them trying to find what worked best. I also shot some winchester supreme factory loads. The factory loads were 200-250 fps faster, and my reloads had almost no pressure signs compared to the winchester ammo. I want to pull some winchester bullets apart to weigh the charge, but won't know what powder it is. So does the factory use "special" powder? Or the same stuff we can get? Anyone know?