I'm sure that you are thinking of the M-1 .30 carbine, which is indeed an underpowered round for pigs. I own a Marlin model 66 Levermatic in that caliber- it's lots of fun to shoot.
In this case, though, by "carbine", I simply mean that it is a shorter barreled gun than the standard, and by "light", I mean that is not very heavy. It still fires the 8x56 round, which I suspect would be perfectly adequate for wild hogs.
I concur. I have a carbine in .45 70 GOVT that is pig medicine. I just personally would not recommend PISTOL CARTRIGE CARBINES, like the Hi Points in 9mm, .40 S&W, and .45 Auto. Or air rifles. If others want to recommend such, I hope the fellow doesn’t take their advice and end up with one of those tuskers roughing him up.
I do have a (lucky) friend that used an M1 Carbine on a pig out on Catalina Island and very nearly become a bad hunting statistic.