I really think that Pierced is probably the undisputed king of extreme nose work. Not only does he have a massive inch-plus septum piercing, but also 000ga nostrils (which he can wear a huge nasallang barbell through), and now he’s added an incredibly high 4ga nasallang as well.
Check out his page for more.
Oh, and if you’re wondering, he’s a software engineer and his piercings are self-done.