Originally it was a TCR-83. Set trigger and interchangable barrels. Then they came out with the TCR-87. Same gun but with a single trigger. Then in 92 they came out with a Magnum conversion, where you could send your frame in and have it converted to shoot the new magnum barrels, .338 Win Mag, and 375 H&H. Then they brought out the Aristocrate which was nothing more than going back to the set trigger.
I own a TCR-83. I love it! The TCR-83 is the sweetest shooting gun I own. I've killed Caribou at 400 yards with the .243 and 7MM Mag barrels. I've shot many Moose with the .338 barrel (and recoil was not near what I expected). I don't know how many birds (Ducks, Geese, Grouse, Ptarmigan, and Turkey) I've shot with the 12 ga barrel.