1. A turret press has multiple dies installed on a rotating head--the turret. Consequently, the operator
- doesn't need to change dies in the press for a new operation;
- he just manually rotates to a new die,
- or automatically rotates a turret by stroking a handle.
However the die is changed, stroking the press handle operates on one case at a time, and therefore it takes three-four strokes to produce a completed round.
2. A progressive press has multiple die stations in its head--three and on up--but operates on more one case. Each stroke of the handle works on all cases at once, and each stroke produces a completed round.
You can now see, I suspect, how a turret can be faster than a single stage--i.e, where you have stop and take time to change out dies and possibly adjust them. For that reason, the workflow with a single stage press is usually 'batch processing" i.e., where you do the same step repeatedly--powder insertion, for example--and then move on to bullet seating for the same set of cartridges, and then finish up with crimping.
A reasonable production rate with a single stage press is perhaps 50 rounds per hour. For a 'typical' (RCBS, Lyman) turret press, one might do 100 rounds per hour. The Lee Turret presses are unique in that they can optionally have automatic turning (indexing) of the turret--and one experienced with that mode can do perhaps 180-200 rounds per hour by using a workflow that just starts with a cleaned case. Four strokes later, a cartridge.
Progressives will not be three-four-five-times faster than a turret, however. The use of a progressive demands a higher level of concentration and organization, I've found. With my Load-Master set up and organized, I can readily do about 400 rounds per hour--but it is fatiguing. And, there really is a greater chance of a problem showing up if maintenance is needed.
added on edit: People use the word "upgrade," I think, because we tend to equate greater production with "upgrading"--it's "better" to have greater productivity. A related factor is that, as one becomes very familiar with all the factors in reloading, one can really work faster than what single stage reloading allows.
Jim H.