ORIGINAL: falcon
sometimes Iget one that shoots high or low by 3 inches, not side to side, always up or down, any ideas.
Probably due tovarience inpowder weight. 13 grains of powder is a lot for a Hornet case. Whose powder are you using?
Are the cases all the same manufacturer? Different brands can have different volumes, and in a small case like the Hornet, it's more noticeable.