I can't help with the 22-250AI but the 6mmAI I can give a little info on.
I like to use Retumbo and 100g Nosler bullets. Retumbo is a little slow for this weight bullet but it's been very accurate in my rifle and kills quickly. Unfortunately I can't get to my data right now. However, I can tell you that you can start with any 6mm Rem load and work up from there.
I don't know what size bullet you want to shoot but you can go to the Cartridge Loads - Hodgdon Reloading Data Center - data.hodgdon.com
website and get all the data you want for the 6mm.