Probably can't get baby food jars anymore,but if you fish, clean out a jar that Powerbait comes in.Fill it with #7 or #8 shot and add a tablespoon of powdered graphite.Shake well.Then before sizing,dip the case mouth into the shot and the graphite will lube the inside of the neck.Then you don't have to worry about getting the graphite off as most powders have ac oating of it anyway.
