The VKS-50's bolt-cycling sound is currently the same as any other sniper rifle, even though it's a straight-pull action. I want to suggest to cut the third "clonk" sound which signalises the bolt being rotated down after the main cycle action, this way it would just sound like the bolt is pulled back, and then forward again, instead of having the sound of the bolt being pulled back, forward and then down.
It's a small detail, but I do care quite a bit about it, and no new sound would have to be recorded, the last "crank" sound would have to be cut out of the default sniper-rifle bolt-action reload sound, specifically for the VKS-50's reload and cycle sounds.
Thanks for reading!