Trolling for loads a road to problems
Tell me how hard is it to reload some test loads and check them for accuracy, reliability and safety in your GUNS? Not at all.
No you DONT HAVE TO GET 10 different powders or primers or cases! I think of people trolling for loads as STUPID, UNSAFE, and LAZY reloaders! If you do not have time and inclination to do things right then buy factory ammo!