Mac,
I think I read an article on a Red Label built by this fellow.
It was a 20 g frame and the barrels were chambered in 450 No2 NE.
I recall thinking at the time that the 450 No2 was a pretty large dia case to use in that little 20 g monobloc despite the cartridges low pressure.

I also recall being a bit shocked by the shooter(who was not the owner or the maker of the gun) who wrote the story.
He mentioned that the gun had been restocked using high grade wood and that the checkering was quite finely done.

But this guy was shooting the thing wearing several bloody big rings on the fingers of his forehand and I couldn't help wondering what that fine checkering looked like after the test was completed!