Hmmm. Interesting. I debugged a thundergun to test it out, since I was getting impatient.
Main problem is the range. I realized that the thundergun, much like the hypervelocity driver, has an explosion splash followed by shrapnel. It uses blunderbuss shots, which if you have enough gunpowder, is real easy to craft. Shots have too small a range, and even if you fire from the maximum range you’ll get caught in the blast.
Now the interesting part. Slugs and flechettes can be fired from the max range and that just about puts you a tile away from the blast range, so you can probably shoot things without getting caught in the blast and damaging the frame where the gun is mounted on.
Due to the launcher skill of my survivor, damage isn’t as high as the hypervelocity driver which uses rifles skill. However, after a few test shots on a hulk corpse it managed to do what the driver couldn’t: vaporize the corpse. It took several shots, but it worked.
By combining the shockwave generator bionic, I can probably push zombies away so they get placed in the max range of the thundergun so they can get vaporized.
Need to increase launchers skill more to maximize damage. It’s currently at 10, and I wonder how high it’ll go if I get it close to the level 28 rifle skill of my survivor.