Information about the King Heavies starts at 2:01 of the video
Also, Airgun Depot has them but in the 150 count tins."Drakt"You can now find them for sale!
http://talontunes.com/shop/jsb-25-exact-king-heavy/
I still have an unopened tin. If you have some 25.4 Kings I will trade it for them. The 33.9 are 300 count tins instead of 350 count."travels4fun"I checked Airgun Depot last night and they are only available for "Pre Order".