I don't really understand what you're asking.
Every kill is one volley that's why I can only kill one ship every 4 seconds (cycle time for sentries and ALL sentries fire regardless of the target). I haven't had much time to experiment post garde nerf. Pre-garde nerf I could pop niarjas consistently with 3 domis but sometimes Tamas would barely survive. Pre-change 4 domis was good enough to guarantee one shots on all the 9k EHP frigates when properly tackled. The renyns are a bit of a pain and to a lesser extent so are schmaels. I'm currently running with 5 domis for the frigates to ensure even at range things pop in one salvo. I could probably get away with 4 domis but that increases my control requirements which I'm not interested in doing right now.
My current setup is loki DDD, 5 domis (frigate duty), 2 vindis with anti-em screen and t2 burst aerator, two nestors.
I run the shield rigs on the vindicators so I can run with a local HQ fleet when I need a break from boxing and just want to chill but still make isk. That was one of the things I missed once I switched to a loki as without the paladin I had no ship that could run in a more conventional fleet.
Currently the domis are easily handling the frigates and there's not much I can do there to improve times other than run two lokis which isn't going to be very efficient. I do spend quite a bit of time waiting for cruisers to die. SO I decided to try to improve times on the cruiser and larger ships. The deltole in OTAs in particular takes FOREVER to die. The vindis are good for about 1600 dps right now. Unfortunately I never got t2 large blasters on those two characters so they are 18 days away. With void I should be well over 1800 dps each. With "only" 1600 dps they chew through the cruisers and deltole very well. I even find time to sick the vindis on frigates in NCOs. With their .121 tracking and with two webs they can each handle a frigate quickly. It's just they have a long lock time on frigates so I have to do a little mental work to keep the dps spread properly :P
I'll get some videos up once the burn thing is over with and I can more safely run.
EDIT : Biggest downside is slower warp speed and the ammo usage sucks.. Switching to two vindicators increased my fleet sunk cost by 1.2b too. So I'm at about 7.3b isk for the entire fleet now.
To fix the warp speed problem I'll probably cut the t2 hybrid burst to a t1 and suffer the DPS loss for a t2 warp speed rig. I lose about 170 dps doing that with the t1 fit. The t2 fit will lose about 175 dps. It's acceptable for me but I'm not sure what the HQ fleets will say in response to the warp speed rig. Considering some of the shit fits I've seen in those fleets I shouldn't have a real issue.