Well to the best of my knowledge, the frame sizes for Taurus® Revolvers; smallest to largest are..........
• Small Frame - 85, 94, 605, 732, 905, 941, etc..
• Compact Frame - 405, 415, 425, 455, 617, 627, 817, Tracker Series, etc..
• Medium Frame -65, 66, 82, etc..
• Large Frame - 44, 416, 444, 454, 513, 608, etc.
(Caveat -Large Frame and the "Raging Series" are essentially the same size)
As a general rule, grips with in frame size, say Small size Mdl #85, 605, & 905; ARE fully interchangeable. Grips across frame sizes, such as Compact size Mdl 617 and Medium size Mdl 82; ARE NOT interchangeable.
Anyone feel free to correct me if I am mistaken.