The rifle: Springfield M1A Standard.
First, the stock rifle grouping, final target. 1.81 MOA
Second, installed M14Doctor ungrooved match op rod spring guide. 1.28 MOA
I can honestly say I wasn't expecting this as I am not the greatest shot in the world but I am very pleased with both the rifle and the op rod spring guide.
PS Shooting South African surplus 7.62x51.
