Does anyone fill the bottle ullage with inert
gas? I have about 15 gallons to bottle in about
90 days, and plan to top them all off with
argon.

I know that at least some if not most commercial
wineries use Nitrogen which would be cheaper than
Argon. *Argon does carry some risk if used in
very confining environments

On wines I expect to store for a while, I get one of those inert-gas
cans for wine preservation and give each bottle a shot before
corking.

Rob