I have now a second SLA printer (the first one mid range machine didn't meat my expectations) and for my own rapid protoyping I am printing engineering hard-tough resins only and that material is upscale $$$.
Even the new printer I upgraded with my own designed accessories, also I developed a pretty robust post processing system and I am also annealing my parts.
From my perspective I don't have a business case making parts for sale to anybody else, you cannot pay me for the amount of work these my SLA parts need
I am feeding my own hobbies only.
Forgive me for my comment, but I really not seeing the benefits of a speedloader. Maybe because when I go shooting BR that is at least 2-3 hundred shots per visit, loading it to a speedloader or directly to the mag is a same poop to me (OK I have to admit I have 3 large mags in .25). This just my opinion and may not float your boat.