i dont know why anyone would leave a can of powder open, even smokeless i wouldnt do that with. Im keeping a half lb of APP stored in my powder horn for some what of a test and will see how the accuracy is later on. I hardly ever touch the horn so its almost like a hidden treasure when i need powder and find my horn still full LOL. Its nice when 3f goex is found in the other spare horn.

I just tested 80gr RS VS 80GR 3F APP and with 2 shots, American Won by 3/4". With the RS though, i could really notice the difference while reloading on a fouled bore. A gritty feel down in the breech.

Both powders though are accurate and will do the job in the field. Its just fun to get nit picky and try to squeeze the most accuracy we can out of these guns.