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In December of 1941, the Soviets decided to test a bunch of SMGs. The SMGs were as follows: "Model 1940" (PPD) "Model 1941" (PPSh) Suomi Bergman BMP-34 #260 Schmeisser 18/28 #77598 Neuhausen (They also had something called an Esti, but no ammunition for it).
The first column is the distance (100 meters). The second column is the SMG name (same order as above). The third column is the type of fire, alternating between single shot and burst. The fourth column is the radius for 100% of the shots. The fifth is for the most precise 50% of the shots. The sixth and seventh are for the center of the groups, relative to aiming.
Conclusions: the Neuhausen SMG shows best results, PPD SMG shows the worst.