The first three shot are on target, the rest end up in the ceiling.
Three round burst are best, or better training and semi auto.
IMHO this is a matter of training,,,
When fired from the assault position the stock is held
under the strong side and the weak hand is “stiff armed”
using the sling,,,
Hand on top of the weapon pushing it down,,,
This will even give you control of an M-14 or anything else,,,
Sadly most guys only learn this in combat...