I have a .300 WM Mountain Ascent and use a SiCo Harvester 300. The suppressor weighs only 11 oz and adds about 8" overall the the package. The POI changes 4MOA up and 1.5 left when suppressor is removed. Change in POA/POI will vary for every load. Thinking hard about leaving the suppressor off for hunting.I'm curious about this as well. I'm waiting on my TBAC Ultra 7. Planning on running it on my Kimber Mountain Ascent 280 AI.