None of the SP's or HP's from 55 gr on down (minus the Federal Trophy Bonded) will pose an overpenetration risk. Some of the SP loads in this class won't penetrate deeper than 8" in tissue. None of them will penetrate deeper than 12" even when fired from 14.5" barrels. With longer barrels, the penetration is usually a bit less. These type of bullets penetrate building materials about as little as anything you can get.
The only problem is, if you trade off penetration, you also risk having a less effective load in regards to terminal ballistics. The FBI set a criteria that called for their serious purpose ammo to penetrate a minimum of 12" in ballistic gel. Anything that penetrates short of 12" in gel MAY not penetrate deep enough to reach vital structures deep within the body on shots from odd angles (say your round has to penetrate the upper arm and traverse the upper torso to reach the heart or damage both lungs). Another problem is when your bullet has to pass through an arm prior to striking the body. This can happen more often than you might think, as anyone you are going to shoot will likely be deemed a threat to you (a badguy poiting a weapon at you). If he's aiming a gun at you, guess what will be placed directly in front of him, potentially serving as a thin barrier to your bullets? Yup, his arms. An arm isn't much, but it's more than enough to have a lightweight 55 gr SP/HP/BallisticTip already fragmenting before it reaches the body. That's bad, as such a situation will leave a very shallow penetrating wound to the body and wouldn't ensure adequate penetration even in a direct frontal shot. Inadequate penetration reduces the chances for incapacitating your adversary. That places you at greater risk. You want to stop the badguy as quickly as possible. Outside a direct hit to the central nervous system (brain and spine), the only other way to ensure this is by causing the person to bleed out. So you want to make sure your bullets can go deep to rupture things like the Aorta and the big blood carrying vessels deep inside the body.
My primary home defense weapon is currently a Bushmaster 16" chrome-lined 1:9 twist carbine. The ammo I use for it is the Black Hills 68 gr OTM. Despite not being designed to expand, it still works extremely well. The bullet yaws sideways fairly quickly after entering tissue. The jacket material on the match bullets is extremely thin and as such, it can't move sideways through tissue and remain intact. So it breaks in half along the cannelure and fragments into many tiny pieces. Here is a photo from the Ammo Oracle that shows how this happens:
That is 75 gr OTM TAP, but the 68 gr performs similarly, just not quite as good (but still plenty good enough). Meanwhile, these heavier match rounds (68, 69, 75, 77 gr etc) bullets will penetrate deep enough to reach the vitals from pretty much any angle. And though they will penetrate a bit more than 55 gr and under SP's and HP's, the penetration is still much less than your typical 9mm bullet.
I'd recommend going with the heavier match loads, particularly the 68 gr Black Hills or the 75 gr Hornady Tap or Black Hills. And if you do decide to pick a lighter load, then at least opt for the Federal Premium 55 gr BTHP. It still won't reliably penetrate to 12", but it will usually penetrate to 9.5" to 11" in gel with dramatic fragmentation. Just be aware of it's limitations (it can underpenetrate in certain circumstances) and act accordingly.
Oh, and read this before settling on any particular load. It's essential reading around here:Ammo Oracle