Anyone done this before, i purged the o2 headspace the day after i shook and force carbonated it. is it going to be heavily oxidized quickly? it had about 6 inches from the top of a corny keg..
I've done that before but not with that much headspace. I didn't have any problems but I don't think my keg lasted more than 2 or 3 weeks. My advice would be to not let it hang around too long.
Drink it all. Right now.
It usually takes a bit to get the oxidized flavors to come through. Drink quickly and you will be fine. Might even have purged itself if there was CO2 in the beer when you filled. Sometimes it comes loose when you transfer...
I've done this before, no issues for me, but the beer was all gone within a month, so there really wasn't any time for off flavors to develop.