Accuracy standards

5.45x39 steel core 7N6 ammunition in test barrel -
Radius mean = 2.5 cm @ 100 m for 20 shots,
Minute of angle = 1.8 @ 100 m for 5 shots

5.45x39 steel core 7N6 in AK74 -
Mean deviation = vertical 4 cm - horizontal 2 cm @ 100 m for 20 shots
Minute of angle = 5.07 vertical - 2.5 horizontal @ 100 m for 5 shots

7.62x39 steel core in milled AK47 -
Mean deviation = vertical / horizontal 7 cm @ 200 m for 20 shots
Minute of angle = 4.44 @ 200 m for 5 shots

7.62x39 steel core in stamped AKM -
Mean deviation = vertical 8 cm - horizontal 7 cm @ 200 m for 20 shots
Minute of angle = 5.07 vertical - 4.44 horizontal @ 200 m for 5 shots

7.62 mm rifle cartridge with the bullet with the steel core, index 57- N -323(S) -
Radius mean = 9 cm @ 300 m for 20 shots,
Minute of angle = 2.16 @ 300 m for 5 shots

7.62 mm sniper rifle [Dragunov] (SVD) + bullet with the steel core -
Mean deviation = vertical / horizontal 16 cm @ 300 m for 20 shots
Minute of angle = 2.21 @ 300 m for 5 shots

7.62 mm rifle sniper cartridge, 7N1 -
Mean deviation = vertical / horizontal 10 cm @ 300 m for 20 shots -
8 cm @ 300m with 1 turn in 320 mm rifling
Minute of angle = 1.04 @ 300 m for 5 shots -
0.83 with 1 turn in 320 mm rifling

7.62 mm sniper rifle Dragunov (SVD) + 7N1
Mean deviation = vertical / horizontal 12 cm @ 300 m for 20 shots -
10 cm @ 300m with 1 turn in 320 mm rifling
Minute of angle = 1.24 @ 300 m for 5 shots -
1.04 with 1 turn in 320 mm rifling

flesym weiver dantsrednu ot tlucifid erom a depyt evah tndlouc I

Interesting. In the 7.62x39 comparison, the stamped receiver groups were larger "vertically" but not horizontally, than the milled receiver. It's not extensive, but it does lend some support to the argument that receiver flex plays a large factor in AKM accuracy.