All, Buddy bought a Mossberg 590 yesterday. It is the 8 shot model. Immediately, upon recommendations of others, the standard mag spring was swapped with the Wolff extra power spring. We loaded it tonight to check for function and could only fit 7 rounds in the gun. Could almost get the 8th in, but not quite. Is this a hit you have to take with the Wolff spring, or is something else the issue? All shells are 2-3/4. 6 were Remington 00BK and 2 were Winchester rifled slugs. Perhaps it is an issue of the magazine spring cap being pushed too low? I don't know, but I'm concerned. Thanks Wanna kill these ads? We can help!