The rifle has a bolt with a gas hole in it. The Model 54 does not have a gas hole in the side of the receiver ring. Is this a Model 70 bolt?
The later Model 54s did have a gas hole in the receiver ring and the bolt had two holds drilled in it, instead of one, as the early bolts had.
If it is a Model 70 bolt, it would have the Model 70 bolt handle for scope mounting. The .30-30 bolt had a special flat bolt face. Model 70 bolts were not made with the flat face.
Does you gun have the standard Model 54 bolt handle or the Model 70 handle?
In terms of rarity, the .30-30(1928-1930) is number 7 of the 10 calibers offered, behind (1) 9mm, (2) 7.65mm, (3) .220 Swift. (4) .257 Roberts, (5) 7mm, (6) .250-3000 Sav., (7) .30-30, (8) .22 Hornet, (9) .270 WCF, and (10) .30 Govt 06.