I got two of these and a box full of dies at a garage sale cheap. It was a box of shotgun reloader stuff, I'd used a MEC in the past, and had never even heard of PW. Turns out it was a pretty good buy, about 150 pounds of PW 375 presses, dies, toolheads, spares, and stuff I still dont know what it is.
From what I can tell, they are as efficient as any single stage reloader gets. My Dad, who has a fleet of single stage machines of different makes thinks the PW 375 is the best he's ever seen.
I can make *perfect* reloads in this machine. I've fed them to a variety of autoloaders in 28, 20, 12 ga, and out of thousands of loads haven't had a single problem yet Some of the brass I've picked up is so oversize I can't get it into my O/U and the 375 swages it back down to size. I dont think you could double charge a shell with this machine.
I'm planning on packing all of my own shells for hunting this year. I typically go through about 2 boxes of 10, 15 boxes of 12 and 20, and about 5-10 boxes of 28 ga shells a year. The fact that I can load all of these, in any flavor of shot that suits me is very appealing.
Having said that, with a production of about 100 shells an hour combined with my newly discovered trap/skeet addiction, a progressive press is on the shopping list.
My dislikes are that Titewad powder, although metering very consistently, seems to make it's way out of the charging ring much more than the others. (Green/Red/Blue dot, Unique, Clays, HS-6. Longshot)
The finished shell pusher mushrooms out the mouth of the shell and makes it hard to eject from the sizing die on those shells that were really tight to begin with. (Hulls from the range that were fired in oversize well used guns)
Handling primers one at a time gets old too.
I've loaded about 3000 shells on this machine since Dec. I like it a lot, and I'm getting a progressive because it's just too slow for me to keep this going and my new trap/skeet hobby at the same time.