I had major feeding problems when trying to run the Xpert through my 10/22 and Ruger MK II. I'd taken a box of those, some Remington, and some Federals out to see which ones performed better. After the issues with the Xpert I gave up very quickly on them.
After I got home from the range, I put one of each brand of cartridge next to each other and actually found the Xpert to have a shorter OAL length than the Federal and Remington. After checking multiple times that all three were indeed 22LR, I gave the box to a friend who is an instructor and haven't bought any more of them since.