Tying the Bachmann Hitch
This knot is frequently tied using a sling made from 1″ tubular webbing. In this case wrap the webbing 3 times around the rope (this means the carabiner gate must be opened 3 times in the tying of the knot) for normal (dry) applications. There are a limited number of applications that involve repeated shock loads to the knot and in these 4 wraps are usually sufficient.
However, with non-locking carabiner it is safer to use the knot with carabiner gate opening facing down (opposite to what is shown in the picture). This decreases the risk of self-unclipping: at maximum, one twist goes off. Otherwise, the whole knot may fail.