110ba...

[Hotolds442]

The best way to find out is to put the serial number of your 110BA into the Savage Parts Finder. Look at part # 12H in the schematic. Click on the 12H and if it says "Obs. Bolt head ret pin 100099" then it's the large hole. If your .308 bolt face is not marketed as a large hole bolt face, then you shouldn't need the large firing pin or retaining pin.

[LongRange]

The best way to find out is to put the serial number of your 110BA into the Savage Parts Finder. Look at part # 12H in the schematic. Click on the 12H and if it says "Obs. Bolt head ret pin 100099" then it's the large hole. If your .308 bolt face is not marketed as a large hole bolt face, then you shouldn't need the large firing pin or retaining pin.

It says... BOLT HEAD RET PIN MAG.-P/N: 103978

Firing pin # is 103979