I picked these rounds up recently. I know they are 6.5 Carcano but that's it. They appear to have some sticky residue on them. Almost like Linseed oil when it is dry. The box they came from is clean with no saturation. What would be the best way to clean them so I can shoot them? Is it possibly neck sealer that oozed out? Also a couple bullets seem to be loose, just slightly. Is this a concern? Any other info would be appreciated.