The young guys on my deer lease say IMR 4350 is an old mans powder.
I'm 33 and use IMR4350...it didn't earn it's reputation because it sucked.
To the OP, maybe check the runout of your finished cartridges. I have never seen or heard of a .30-06 that will not shoot that many different types of bullets with that powder. Makes me think something is wrong with the dies since you mention that you have one good load. Maybe your dies just fit that bullet well and seat it straighter than anything else?
Worth looking into at least. You shouldn't be having these problems with IMR 4350.
