I have a metal can of IMR 4198 powder with the price tag still on it. $15.95 now how's that for inflation. I am just wondering that it couldn't be that old. I bought it off the shelf in the metal can. Well more like a metal rectangular type can. I wonder if it hasn't been opened how long it's good for. I have read that it is a decent powder to try with the RMR 69gr. OTM bullets. Well I say that but they were using it for 69 gr. Sierra Match King bullets but a of the RMR users are using Sierra load data for the RMR pills. What say you? I am mainly speaking to you older gents that have been reloading since the time of brass cannons. Being serious do you think it's still reliable?