A permanent redirect is strong signal that a target URL is presen, says google. below you can click a check how its work
1 - sociesc
2 - wiredforchange
3- archive
4 - littlearmenia
6 - darkghost
7- idsec
9 - forexiq
so give it a try a look how its work because in improving ranking of a website redrict url practice is new trend for optimision test to have a good serp result