According to the chart, you are correct.
According to the actual bearing, the chart is wrong.

This is from Timkens website.
This is for a 308LOE bearing and not a 308SG.

Part No: 308LOE
Description Value
Bore (B) Inches 1.378
Bore (B) MM 35
OD (D) Inches 3.5433
OD (D) MM 90
Width (W) Inches 0.7874
Width (W) MM 20