I have been shooting one pin before tha slider sights were out far back in the mid 80s.
the HHa optim lite is what's on all my bows and allways will be. With the speed we are shooting now one pin out to 40 yards is all you need. If you need to make a farther shot you can ajust the slider. I have the HHA with the dial and it stopped moving the pin with the dial at the range so it is in my junk box that i can't part with.
Anyone who shoots a sabot bullet has had the problem with loading the next round with a dirty barrel we have all struggled with it.
Between muzzleloader shots I have done some research and testing on my own to find out what works for me for the next shot. I have been using a product called bore butter and when the muzzleloader is just sitting around I leave it caked in the barrel for protection. Have also found that if I lube my sabots with bore butter they really slide nicely down the barrel....