I've used the 310 tool for years to do the loading chores that can be done in front of the TV or stereo (no powder or seating operations). Now i seem to be as interested in the history of these tools despite the fact that I need another interest like I need warts. Does anyone know of a reasonably definitive treatise on these tools? I've done the web surfing and short of buying and reviewing every Lyman/Ideal/Marlin catalog, I was hoping someone else found time to do this research. Thanks