I came into an estate sale on reloading components, MEC 9000G, 2300 Win. primers,3500 clay buster wads, 5 bags of lead and 12 lbs. metal keg of 700-X. My question is does powder go bad with age? The container was full and the seal was broken, there is no evidence that the keg ever got wet. I know 700-X doesn't come in 12 lbs. metal containers anymore, so I don't know how old this powder is.