While I' ve never used a .40S&W carbine for hogs or deer, I' ve used a 9mm carbine on deer (not hogs) and a .45acp pistol as well, the 9mm carbine of course would be much weaker than the .40, and the .45acp pistol' s power would be about on par with it. At short ranges (mid-range archery shots), they performed better than I assumed initially they would (I had planned on necessary follow ups) on hogs, I' ve seen PH' s use .45acp' s to great success as their last resort weapon on smaller hogs they almost always empty them, while they stopped gaining after a shot or two.

Check your state laws, then try out your accuracy (if you' ve already got the .40S&W) and get some good bullets. If you don' t have the .40S&W, don' t get it as your primary, because a primary it is not, it would just make for a good fun secondary gun.