I only have one. I've had a fascination with the cartridge for a long time. I purchased it mainly to explore the cartridge from a reloading perspective. Glad I did. It's a pretty slick little cartridge that would work for SD or small game. Loads are easy and components are available. When I first started reloading I had to search high and low for load data. Some of what I found didn't work very well. Many of the powders that work well, like 7639, are no longer available. I think I have it dialed in now though. Prices are becoming ridiculous. This is a 31-1 from the 60's. Paid $500 for it ~3 years ago.