Need info about super nova.

[wes g]

I'm planning on buying a supernova field (28") and was wondering how many shells it can hold max not counting one in the chamber.

Also I'm looking to buy a magazine extension for it. I think I found one and says it holds "+8". Does any one know of a longer magazine extension? I want this thing to hold ALOT of shells. Thanks

[PCFIVEZ]

i am not sure since i am new to this world...my SNT is 18.5" and it can fit 6 shells in mag +1 in the chamber.