What always bothered me about a QLA was it really doesn't help loading all that much. To help it would have to be a tight fit on the bullet, and be in perfect alignment with the bore.
As they are. You put if the bullet down though the QLA to the bore. Wiggle it around to find alignment, and shove it in. Just as easy to do without the QLA.
I'm talking about conicals. Maybe it helps with sabots.