I bought this at an estate sale several years ago. It has a "snail" type collector. It was in good shape except the cup under the snail. They could not find it.
I shot at it without the cup when I first got it. Worked great for the first one or two shots. Then the next shot invariably hit a previous one and it got ejected out the bottom, rolling who-knows-where.
I recently saw a Lyman lead casting pot on a gunshow table and realized that it was nearly the right size to replace the bottom pot. I did a little grinding, made a couple of "wings" for it, and brazed them on. I tried it yesterday with .38 Special reloads of 160gr 357446 at Bhn 14 and 4.8gr of Unique. No problems. I don't know how much it will take, but the thickness is about 3/16" steel.
I think I will be limiting it to .22LR, though. The noise. I have earmuffs, but I have no doubt that people outside could hear the .38 Special. If so, I can expect a knock on the door. The Mayor and Police Chief are very anti-gun-owner.
First picture from the front. It is 18" x 18". Can't very well miss it from 25 feet. The next is the side view. The new cup is in black. The next is the top view of the snail. Then the bottom view of the snail (without cup). Next a closeup of the cup on the snail. And last, the cup showing its "wings".
Does anyone know any of the history of this device?