I see there is a 03 and a 03a. One is 1.3" and the other is 1.388"
Mine has the 03A on the ocular lense and it fits good and tight. I bought the recommended sizes for my 2.5x8 leupold and every time I shoot my 454, I have to look for my covers.
It takes 43 muscles to frown and 17 to smile, but only 3 for proper trigger squeeze.
