My T/C Pro Hunter shoots well w/ 120gr. 777 loose powder, and T/C's 250gr. Shockwave sabots or Hornady 250gr. SST's; both shoot well for me, however I have to run a wet patch after 2 shots, (rotten powder ring). I used the Nikon Omega BDC atop my T/C this year on a 9 pt. the last day of rifle season.
When the smoke cleared, he was lying where he just stood, very exciting.