Does anyone have experience with repeated reloading in fluted chambers? I have a H&K P7 that I plan to start using reloads in soon. The chamber is fluted, so when the cartridge is ejected, there are some nice score marks down the side from the propellant gases. I've run a few batches through the case tumbler, and most of the powder burns are gone, but I can faintly see where it looks like some have been etched. I'm just wondering whether or not repeated reloading and firing from a fluted chamber will cause case failure or not. Wanna kill these ads? We can help!