While getting tired of the Frontier Command Posts, I decided I would try a Frontier Barrack. The max damage one have to tank in those is a bit more than in the easy mode Command Posts, but I figured I was so overtanked I would hardly notice any difference. Well, you still have to avoid messing up yourself, there's no fit for bad judgement.
I had done dozens and dozens of Barracks before, but never in a Vargur, and never solo. It's a pretty bad site for the Vargur since most of the battleships are either spawning 100km out, or tend to orbit at 60km. With barrage and one Tracking computer running range scripts, my falloff was 100km. At 60km, the killing-speed started to get painfully slow.
Anyhow, when the second wave spawned, I made the mistake of not going for the neuting battleships (there's three of them) at once. After downing the second cruiser I noticed to my horror that my tank was actually breaking! And not only that, I was getting real close to peak recharge on my cap too... With no capacitor my tank would definitely fail, so quick thinking was required. After I had checked that everything was still running and boosts still was up I had to wait out the bastion (1 min cycle and no moving or warping while it's active) and warp back to my POS to regroup. Keep in mind that the bastion is the thing that make you able to tank in the first place, so if you cant tank with it running, you wont have much time when it shuts of.
Off with the Tracking computer (this was before my finalized fit and I ran with a single Invulnerable field and two TCs instead of the other way around) and instead fit a second Invulnerable field. There! That would hopefully give me the time to kill one of the neuting battleships to lighten the pressure on my capacitor enough to be able to stay on field. Which it did, I finished up the site, salvaged the wrecks the Mobile Tractor Unit had pulled in and limped back home to base.
In a C4, I would probably be better of running a cruise Golem, no range-problems there... Only problem is I'm liking the Vargur a bit to much to give it up just yet.