So, have spent most of my SK life as a bomber/hybrid and have been starting to eye up the very brief time I tried being a gunner, especially now that gunners have had a few buffs here and there so it definitely feels more worth it! So, have thrown together a new set and am testing it out, to see how well I can fare. The set layout itself I'm fairly confident about, but am still unsure about guns, partially due to inexperience with them and knowing (from personal use) which ones will work best. So, I went with a mix!
Armour:
Seerus Mask
Shadowsun Slicker
Swifty
Trueshot Trinky (x2)
Guns:
V.Pepperbox (asi:low)
Blitz Needle (ctr:med)
Storm Driver (ctr:med)
Sentenza
In total, this gives all my guns max damage, v.high asi and med ctr. The Blitz and Storm have max ctr and the Pepperbox has ultra asi. The Sent has no UV yet, as I built this in my earliest days then abandoned it when I realised that pierce/shadow was an awful combo.
Overall, I have a mix of all four types, so I'm never at a loss, and any one of these can be replaced with a side-knife should I want/need one during a floor (since I won't need 3 types), and a mix of stand-shoot and move-shoot, high and low clips, and varied charge attacks. The Autoguns both have ridiculously high charge damage (1k5+); the Pepperbox being more than capable of onehitting anything that looks at me funny and the Blitz being a Trojan/Vana/wolver solver.
I've gone with the Sent over Umbra because I feel it's better for Gremlins and makes no difference to Slimes as it still kills them fairly fast. I went with Storm for the shock, preferring that over freeze (considering that the shots will just break the ice, whereas shock remains) and my pepperbox already has fire. I was torn between that and Prisma for the extra damage, but decided that between the two Autoguns, I'm already pulling redundant damage when I need it, so chose to have the status over some more damage I really don't think I need.
But of course, my experience as a gunner was from long ago, and quite brief, and now am just getting back into the swing of things, but with the mindset of a bomber. I'm finding myself standing far too close to enemies and making an effort to use the pepperbox's spread for area damage or assassinations rather than safely at the back. And of course, with my armour I only have half shadow/ele defence and no piercing defence to speak of, and my shield is about as reliable in a fight as shaking a stick at the baddies. But I guess some experience in running circles around enemies helps this, at least.
Basically, just looking for some of the thoughts of those more well-versed in gunning than myself. S'good fun playing about with new classes, but a suggestions on either playstyle of loadouts can never hurt :)
I'd actually consider going for hail driver if I were you. That would let you freeze things so that you could follow them up with a pepperbox charge, landing all of the shots safely.
Keep everything the way you've got it, but then add hail driver into the mix and use it in place of whichever damage type you won't be using much, most likely blitz. This will also let you rapid fire drivers should you so choose, and would let you both single things out with hail driver and compact the crowd with storm driver. Alternatively you *could* switch out storm driver for it and maintain your 3 damage type balance thing that you've got going on, at very little cost. Hail driver is under rated, IMO.
Another consideration is that umbra driver benefits from CTR way more than sentenza does... meaning that you might want to switch over to that, although its more a matter of preference. When I gun, I usually focus on maxing out either ASI or CTR and plan my guns around that. I know I'll never use the derpy sentenza/argent peacemaker charge, so I go for ASI with those; whereas with drivers/autoguns I usually go for CTR (and ASI second), which seems to be what you're going for, although I think that as a pure gunner you're fairly optimal with this loadout.
The only other consideration I would have for you would be to consider neutralizer/biohazard, although to be honest I don't think it'd be worth mastering those in the first place. Sure, they'd benefit perfectly from this CTR set, and they could easily be the best (support) guns in the game if you were able to master them, but they're just so hard to use that it isn't worth it most of the time, and its far more than "getting the hang of it" with them. Like with a driver, you just have to practice a few levels, and you can fight with it. With biohazard, you have to master the timing of everything, and then master the dodge patterns and AI etc etc. And even then, you're still going to have to practice a good deal with it.
I'll have to try to catch you when you're using this set, I'd like to see it in action.