Yes. Here's Friday night's pig taken with a 125 Nosler BT at about 130 yards with my 16" AR. I'm running right at 2230 fps in an AR 15, 16" barrel. In my bolt gun, they are running 2350 fps. With a shorter barrel, you will lose about 20-25 fps per inch. In a 9" AR, you'll be running about 150 fps slower than the 2230 (atleast in my ammo, not sure what speed you are running), so about 2080 fps. Most bullets will expand down to about 1900-2000 fps. After about 1800 fps and under, expansion is heavily reduced, if any at all. I know for a fact that a 150 grain Nosler BT in a blk out at 1950 fps in my bolt gun, will NOT expand in a pig at about 60-70 yards out. That bullet made a .308" hole in, and a slightly bigger hole going out. It killed the pig I was shooting at within about 40 yards, but I like more expansion, so I switched to the 125's. The 125's at the 2230 muzzle speed in the AR, and the 2350 fps in the bolt gun have shown perfect mushroom shaped expansion. Reduce that to 2080 at the muzzle, and by impact, that bullet will have limited expansion.
Switch to the 110 grain weights, and that will certainly help expansion. My 110 V-max is running 2370 fps in a 16" AR. Put that in a 9", and that will put you in the 2200 fps mark. With a varmint style bullet (thinner jacket), it will help with expansion at impact speeds. These also make a great self defense round.