I'm on my second 930 Blackwater in as many months.
What a large piece of sheyt! (both of them...)
I bought mine based on owning a model 9200 that has run flawlessly for me and of course all of the positive reviews I saw on the 930.
Aside from general build/finish quality that I wont get into, I believe most of my problems have been spring related. One spring I had was 40" in length (.036" wire) and the other was 26" in length (.048" wire).
The .048" x 26" spring seems to make more sense (it's not as long and "spindlely" as the thinner, longer, "PITA to install" spring) but both of them exhibit feeding issues...
First shell on a fully loaded tube often either doesn't feed at all or "double" feeds two rounds to the elevator.
So far the second unit is working better, but I doubt I'll ever use it/rely on it anywhere except the range. Home defense is absolutely out, if anyone ever broke into my home I'd have to ask the intruder to "time-out" while I dealt with feeding issues... : /
BTW, Mossberg has yet to respond to my service request, it's been MONTHS...
The Choate tube extension on the first one didn't even fully seat onto the tube causing the barrel and everything else to float out of the receiver by about .05"
Sorry, clearly I'm ranting at this point...
My Question is this, by how much should the springs be cut down by? (referencing the first post in this thread)