I like Hornady reloading manuals, and have the last couple years editions. There are some others I reference to get a good idea of a load before trying it out.
I'm wondering how they determine say 12.7 grains of a given powder. Why not 12.5. Then they go up by .6 grains. Why not .5?
Then with the same caliber (357) but different powder, they go up in steps of .3 grains.
Do they go up by .1 and then just publish what they feel is the best?
Surely they have an idea of what the results will be before testing. I can't see them going into something blind.
I'm wondering how they determine say 12.7 grains of a given powder. Why not 12.5. Then they go up by .6 grains. Why not .5?
Then with the same caliber (357) but different powder, they go up in steps of .3 grains.
Do they go up by .1 and then just publish what they feel is the best?
Surely they have an idea of what the results will be before testing. I can't see them going into something blind.