I do all my shooting with a relatively new 10/22, almost stock (bipod, floated barrel, non-bedded). I find the Xperts have a lot of feeding issues, and generally I would get 5-6" groups at 50 yards with them.
Dynapoints, 4-5" groups, no feed issues, but at least once every 10 rounds was a FTF or stovepipe. I foudn them pretty useless, and after 2 boxes, went looking for osmehting else.
My 10/22 LOVES those 333 boxes. For some reason they print a steady 1.5" group at 75 yards. After 5 boxes, not a single FTF, FTE, or even a stovepipe. I also like the lack of lead fowling that you see with the Xperts.