Source: VK WotLeaks community

Hello everyone,

one of the alleged features of the upcoming 9.1 patch (well, unless they scrap it like they did with other features) are the barrel kill marks.

According to the leak (I can’t guarantee its legitimity though, so don’t take it for granted), these kill rings will not be awarded for kills or XP, but for average damage on this tank and will work something like the mastery badges, only with damage, not XP. They will be visible on the gun barrel.

One mark (ring, star etc.) will be awarded for having average damage better than 65 percent of the players on the vehicle

Two marks will be awarded for having average damage better than 85 percent of the players on the vehicle

Three marks will be awarded for having average damage better than 95 percent of the players on the vehicle

These marks can be recieved only on tier 5-10 vehicles, they are displayed on the gun. It will be possible to disable displaying them in settings. Only damage from random battles counts, the marks will not be displayed in historical battles.