I spoke with a custom barrel maker regarding a 7TCU carbine barrel for my Contender today. The first thing I need to decide is which bullet or bullet range I plan to use. He wants me to submit a dummy round so he can make the throat accordingly. I plan to use this barrel on both groundhogs and deer. What bullets do you recommend? I'm leaning toward a maximum weight of 140gr and using a 1:9 twist. I will be posting this question on several forums for maximum input. Thanks!

120 grain and either the Hornady 7mm Handgun round or the Nosler Ballistic Tip. You NEED a soft expanding bullet for velocities around 2000 FPS... Keep your shots under 200 yards on deer with this caliber. Its an easy caliber to reload... And mine was deadly accurate in my Contender.