I have a No.4 mk1 that is marked US property.
The bore is .307" and the two grooves are .317".
I shot it first 3 years ago and it was keyholing surplus with .310" bullets in a 6" group.
I shot a group again last week with some 1974 surplus with .3105" bullets: 1.8" verticle string.
The bore is .307" and the two grooves are .317".
I shot it first 3 years ago and it was keyholing surplus with .310" bullets in a 6" group.
I shot a group again last week with some 1974 surplus with .3105" bullets: 1.8" verticle string.
