I reload for 10 - 15 doubles and I WON'T use a powder
where I have to use a filler.

I just change to another ADI powder and find a load that shoots.

By "fill", it doesn't have to fill the case, just enough that I don't have to use a filler.

I don't have a 450 No 2 or those big cases but I do have 500's, 470's, 450's etc etc.