When my dad passed I received many boxes of R.B. Sisk (Iowa Park Texas) .224 projectiles. Each box has a name on it(factory)...Example. 54 gr sp "Niedner".....40 gr sp "Hornet".... 41 gr sp "Super Lovell"...63 sp "Express"....50 gr sp "Lovell"...54 fmj "Niedner"...Anyone know the history of these names. The boxes appear to be 40's-50's in nature.Any collecter value?..Also there are about 200 55 gr hp that are Cadmium coated.They look a little rough.. Are these safe to shoot? Thanks.....