interesting type 81 article...

Huh funny how they dont mention any barrel to receiver misalignment, and 1.75" at 100m?! Ive heard about that figure before, not sure what the R50 means, if its 1.75" dia i call baloney on the Chinese. Even if its radius, 3.5" is still better then ive seen or heard coming from MOST Canadian versions. Maybe they were just doing 3 shot groups.
 
R50 is Sov-block term for circular error. It's a probability metric.

Half of the rounds shot will land in a circle with radius 1.75" around mean impact point. So you can have 5 shots with R1.75, 4 shots with R4" and 10th shot with R10". It's still R50 1.75"

Hope you got the idea.

It is used for artillery and bombs etc. Not sure why Soviets chose to use it for small arms too.
 
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BlackVoid said:
R50 is Sov-block term for circular error. It's a probability metric.

Half of the rounds shot will land in a circle with radius 1.75" around mean impact point. So you can have 5 shots with R1.75, 4 shots with R4" and 10th shot with R10". It's still R50 1.75"

Hope you got the idea.

It is used for artillery and bombs etc. Not sure why Soviets chose to use it for small arms too.
Click to expand...

Makes sense, thanks for elaborating!
 
BlackVoid said:
R50 is Sov-block term for circular error. It's a probability metric.

Half of the rounds shot will land in a circle with radius 1.75" around mean impact point. So you can have 5 shots with R1.75, 4 shots with R4" and 10th shot with R10". It's still R50 1.75"

Hope you got the idea.

It is used for artillery and bombs etc. Not sure why Soviets chose to use it for small arms too.
Click to expand...


Cool, neat bit of trivia.
 
the article was in guns & ammo july 2007. i have a copy. funny i bought the magazine for the write up on AK, i'd no clue what a type 81 was back then but 11 years later lord and behold, im holding one in me hands.
 
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