I recently was given a bunch of reloading equipment and supplies that was a friends dads who passed a couple years ago, the problem is I got a lot of older powder all of it is in 4 or 8lb containers that were never opened, I opened and smelled one and it smelled ok but I dont know what data to use with them they are prob late 80' vintage? the three powders are accurate arms mp5744, mr3100 and mr223. are these the same as aa5744, aa3100 and aa22300? would I be safe to use new data with these powders if I start low and work up? any help would be great I would hate to not be able to use these.