I found out long ago, that if you want to be competitive in the 1000 yd matches, you had better use the very best load that you have for your rifle. I not only buy the best powder, ie what my rifle likes the best, I also buy all I can of the same lot #. Mixing cans of different lot #'s can ruin everything ! In my round ball guns I have found very accurate loads using Goex but in my Sharps 45-100, Swiss is king; One lot of Goex cartridge managed a close 2nd. I still have some just in case I need it .