.45ACP barrel length?

[Murmur]

Hey Guys....I've been keeping an eye on this discussion for a while. Ironically I've been looking at a custom barrel in 45ACP for my Contender carbine but looking at the possibility of say 480 Ruger. I want to launch large bullets at subsonic speeds. The 45ACP is a no brainer since ammo from factory is subsonic.....the only thing stopping me going ahead is the idea of a 400gr 475cal bullet from the 480 Ruger at 1,000 fps! Question is would a 230gr 45 ACP bullet have enough energy to dispatch a hog at 75 yards???? I know 400grains surely would!