It's ok becaues there's no loading data for them so no one will buy them.
Only found them in stock at one outlet so it looks like the cat is already out of the bag.
What twist is your 220? My 223 is 1 in 9. According to Sierrs they will work in twists from 1 in 7 to 1 in 10. I'm guesing your 220 is 1 in 12?