I have done this and we all know .22 will be plentiful soon enough. this is a great opportunity IMO. I used the 250 rounds per oz of silver and with shipping I ended up getting ASEs at $15.00 per oz.
http://www.reddit.com/r/Gunsforsale/comments/1hklsi/wtt_silver_for_22_223_ny_will_ship/
http://www.reddit.com/r/Gunsforsale/comments/1hklsi/wtt_silver_for_22_223_ny_will_ship/