bore rider.
notice the nose versus the body.
non bore riding.
all of the engraving surface is on the body.
there are other types and style for rifles.
the Loverign designs are tapered from front to back to snuggle up in the throat, but still have enough base diameter to fill the entire barrel.
they may have a portion or portions that are a bore rider, and others that engrave the rifling but don't fill the grooves fully,