ReloaderFred
Member
Total Metal Jackets (TMJ) are normally plated bullets. Some have heavier plating than others, depending on who made them.
Some companies will place a copper or brass disc in the base of jacketed bullets (FMJ) to eliminate the contact of hot gasses with lead for shooting on indoor ranges. Even though they're fully encapsulated, they're still "cup and core" bullets, whereas plated bullets are a swaged core that is electroplated with either copper or brass.
Hope this helps.
Fred
Some companies will place a copper or brass disc in the base of jacketed bullets (FMJ) to eliminate the contact of hot gasses with lead for shooting on indoor ranges. Even though they're fully encapsulated, they're still "cup and core" bullets, whereas plated bullets are a swaged core that is electroplated with either copper or brass.
Hope this helps.
Fred