For home defense, I've used pretty much any 55 grain softpoints I can get my hands on. Praise God I've never had to actually use my AR for HD, but my logic is that:
- a soft point bullet will be even more devastating and effective at inside-the-home ranges than an FMJ,
- at those short ranges, sub-MOA accuracy is not really a consideration, and therefore it really isn't necessary to spend money on match-grade or high-end hunting ammo as long as the ammo you buy will feed reliably in the gun, and
- a softpoint is less likely to be barrier-blind or over-penetrate than an FMJ.
I think that (A) is an even bigger consideration if your AR is an SBR, where failure of a bullet to perform due to reduced velocity can be a concern.
I am going to be building a suppressed SBR in 2015, and then I think it becomes a very practical HD weapon.....for the handiness of short length, yes, but primarily for the reduced noise. Only an idiot actually wants to pull the trigger on a firearm inside the home, without ear protection on. When I first built ARs, I did keep one ready for home defense in my bedroom, but at some point I came to the conclusion that perhaps a 12 gauge shotgun was a more practical choice for inside the house, and that's what I've kept in the bedroom ever since. But a suppressed SBR might be an even better choice.
“Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.”
― G. Michael Hopf, "Those Who Remain"
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