1.)Simply place a squad of non-anti-armor enemy infantry in the editor.
2.)place yourself as a gunner in a BTR-T on an elevated piece of ground to make it easy to fire on the ground very close to the target.
3.)Shoot MP-T rounds around their feet, and see that you need a VERY close hit before they even move.
MP-T is virtually useless unless you have a direct hit at the moment.