Yeah, like @retrieverman and others have said, if you can't finish a home invasion with a full magazine tube, you've probably lost already.
With that being said, I have a 6 round Mesa Tactical side saddle mounted on my Mossy 500 filled with Winchester 2 3/4 inch, 9 pellet 00 buckshot.
More importantly than spare ammo, make sure you have a weapon light mounted on it. You can't shoot what you can't see. And it's damn near impossible to manipulate a scattergun with a hand held flashlight. I have the Streamlight TLR-RM1 on mine.
With that being said, I have a 6 round Mesa Tactical side saddle mounted on my Mossy 500 filled with Winchester 2 3/4 inch, 9 pellet 00 buckshot.
More importantly than spare ammo, make sure you have a weapon light mounted on it. You can't shoot what you can't see. And it's damn near impossible to manipulate a scattergun with a hand held flashlight. I have the Streamlight TLR-RM1 on mine.