*"For determining accuracy the German military fired a group of shots into a target and used statistics to calculate a hit probability. For this*

**they drew a circle that disregards the hits on the outer part of the target and only count half of the hits**(50% or R50) on the inner part of the circle. This dramatically reduces the overall diameter of the groups. They then used both the vertical and horizontal measurements of the reduced shotgroup to measure accuracy. When the R50 results are doubled the hit probability increases to 93.7%."To me the above sounds like a misinterpretation of German data, as otherwise German rifles were almost twice as inaccurate as everybody elses, something we know from shooting these guns isn't true.

In the German documents I've read they mention "50% streung" and then give what appears to be the dispersion from MIP. Nowhere is it mentioned that half the hits were disregarded. Instead it says that doubling the figure would give you the 94% streung, which seems to indicate the diameter of the group. In that case the Gew 98 for example had a mean dispersion of 6 cm @ 100 m, or ~2.3 MOA. However according to wiki it would be 4.6 MOA, which sounds pretty ridiculous when it was 2.5-3 MOA for most other service rifles of the era.

Thus the question becomes, does "50% streung" refer to exactly? Were they calculating using a circle or a rectangle etc?