Try a Kick's Gobblin' Thunder choke and the Limbsaver pad. I recently got my TriStar Viper G2 that weighs only 6.8 lbs. I broke it in with heavy waterfowl loads per the manual, kicked like crazy. I got a couple Kick's High Flyer chokes and a slip on Limbsaver pad and it made a huge difference. Even just the chokes helped. Kick's chokes have the ports angled forward toward the muzzle so the gasses escape forward instead of sideways.