Search:

Have a look at the adi single action loads in their manual in big black print "do not use any filler with these loads" 308 isn't listed but as they say it would double the size of the manual to...

Look back through old Lyman manuals from the 60s, light loads 5 to 10 gr of shotgun powders, bullseye, unique etc no mention of case fillers. Trust the old timers on this.