Originally Posted by
ORAC
US Defence Intelligence agency assess that less than 40% of Russian missiles fired during the war in Ukraine have hit their intended targets. 20-30% fail to launch or crash in flight and many miss aiming points.
https://www.newsweek.com/exclusive-r...a-show-1709388
Which emphasizes why the Russians want their mobile nukes at the Finnish border. For the reach distance, it doesn't matter, for the failure fall-out it does.
At the military level, failures are calculated, so just have enough extra capacity. Though, this amount of failures is high.