BT has often been quite sloppy when it comes to ammo explosion terminology. Assume any explosion resulting from an item taking a critical hit is a standard ammunition explosion with all the usual effects thereof, unless specifically stated that it is not.
With B-Pods being an external weapon meant to explode, and one-shot to boot, that's honestly kind of silly and something I'll mark to fix in the future, but RAW that's how it works at this moment in time, unless there's an older answer out there that search didn't turn up. I'll mark it for errata.