Howdy folks new to the forum and have a question. I have been hunting with my Thompson Omega for quite a few years with good luck. Awhile back I picked up a Thompson Grey Hawk and have shot it a bit. Been wanting to use it in both shotgun and muzzleloader seasons. I have used both Triple Seven powder and regular pyrodex. Used maxi balls and Hornady sabots minus the sabot. Both gave good results. Pretty sure Triple Seven pellets will not do well in my Greyhawk. Any input and experience would be great! Thanks and this a awesome forum!