No, you do not. Our chassis system utilizes a V-Block bedding system for all cylindrical actions. This eliminates the need for bedding as the action is pulled down and evenly across the entire bedding area.
The only exceptions are the non-round actions: Howa 1500/Weatherby Vanguard, Winchester Model 70 and Ruger M77. But our chassis fits the action in the same manner that pillar bedding does. So there's no need to bed these either!
If you want to see a video on custom bedding a rifle vs using a chassis check this out!