I have zero use for a single stage press loading .40 on a 1050. If I was loading rifle or something maybe.
I guess I am speaking from a reloader angle vs a shooter angle. If making your own ammo is a hobby as well, you will need a single stage. If your only reason to reload is to supply ammo to shoot in high volume, then you are a shooter and probably would not require a single stage. I do know from experience however, load development is much easier and less time consuming if you run a few through the single stage before you mess with your settings on the big machine. If you are never going to touch it again after you find your load, then not so much.
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