I found this gun to be a crap shot of inconsistencies. I would be getting easy kills with it and then all of a sudden I'd shot a guy point blank range and he would not die...(I had a great connectiion so it isn't lag)
The range is okay, but nothing special. Since you have no attachments you really have to grind with this weapon to get anywhere with it.
I found the SPAS 12 to be a better shotgun. However I understand your idea of wanting to get every gun gold.