TexasCHLforum.com

The one reason I can think of (besides not having a choice) to use FMJ in a .45 is that many 1911's don't reliably feed some HPs. The less conical and flatter the nose, the greater the problem. You could polish the feed ramp I suppose, as some do, but I find that sufficiently conical HP's will feed just fine. Massad Ayoob vigorously objects to using FMJ in a CC gun.

If the worst does happen I'm not going to be worrying much about over penetration.