I rather doubt it.
The Tround is at its most basic just a very fancy cartridge. The actual bullet is nothing more than the standard form that we all know and love as far as I have seen.
The adaptors that I've seen is basically a way to sleeve a standard cartridge into the tround so that they can be used in pistols built for the tround.
Of course, This is based on memory thats more than a few decades old.
