Maybe it is a regional thing, but I've seen and owned more 99Cs in 284 than all rotary magazine styles combined. 99s in 284 were very uncommon in New England, but there seem to be a fair number of them in and around Nebraska. I got really lucky a several years ago at a show in Wichita, KS, and went home with a minty 99PE for $700. The majority of the 284s that I see are in pretty good condition and appear to have been used very little, perhaps because ammo is less common and more expensive.
Jeff
