I checked Doctor of Credit after I asked here and it seems that you can still buy a Target gift card with a Target gift card. They don't allow you to but third party gift cards with Target gift cards. I'll give it a try on Sunday with a small amount and then go back for more if it works. Last year I bought a boat-load of $270 gift cards
for my DVC dues and vacation spending money. I'll report back here with my results. Worst case, I've saved an extra 1% over the Target redcard and I'll use it up eventually like I did the last one.