nratc
I had the same problem with my Triumph... nothing would load the way i wanted it to.
I ended up running a 100 stokes of JB's Bore Paste in the bore. The bore polishing paste cleaned and polished the bore - now I can load any of the normal sabots with out a problem...
I did a post on it - i might be able to find the post with a search if I can I will put a link in here....