fourbore, you need to understand how Savage models are listed. They are all basically the same and many use interchangable parts. 2 number models are short action, 3 number models are long action, 10, 11, 12, 14, 16 all specify different action features and calibers that are geared toward a specific purpose wether it is hunting (11/111), competition (12/112), or LE (10/110), and there is a lot of overlap. The letters specify other features like stock material, sights, and type of magazine:
AK - Adjustable Muzzle Brake
NS - No Sights
B - Laminate Stock
P - Police
BT - Laminated Thumbhole Stock
SS - Stainless Steel
C - Clip (Detachable Box Magazine)
T - Rimfire Peep Sights
F - Synthetic Stock
V - Heavy Varmint Barrel
G - Hardwood Stock
XP - Package Gun
H - Hinged Floorplate
Y - Youth model
L - Left hand
ML - Muzzleloader
SR - Suppressor Ready barrel (Threaded)
The difference between the 12FV and the 12FCV is that the 12FCV comes with a detachable magazine and the 12FV does not.