Your problem was you were shooting on a dirty bore. Get some Windex. Dampen a patch but don't soak it. Then work that down the bore in short strokes from top to bottom using your jag. After that a couple of dry patches.

The Super Glide Sabots you were shooting should have been the easiest of all the combination to load in your rifle.

If you shoot BH209 no swabbing is necessary.