Thread: Question for the Guru's

A mate asked me to find some reloading data for 308 using 150 grainers and 2209, so off to my books and to my surprize not one had a load using 2209/H4350.
So on to the internet and just about everything I could find said 2209 was not recommended for the 308. Most stating it's too slow.
But most say 2209 produces goods speeds and fine accuracy in 243, 260, 7mm08 and 338 federal then why not the parent case?
Any thoughts???