+P ammo would likely help for one shot stops. A 12ga with #4 buckshot will give better one shot stops on the average. Either way, be prepared to shoot more than once.
Not all that sure +P ammo would make a difference. Depends a lot on where you hit the intruder. I’d take shot placement over +P ammo, given the choice.
Although waking suddenly at 3:00 AM, my shot placement probably won’t be as good as when I’m at the Range.
I’ve got 3 guns within arm’s reach when I’m in bed. A Glock 32 in .357 Sig, a 1911 in 45 acp. And a Rem 870 12 ga pump loaded with 8 rounds of # 4 buckshot.
The 12 ga will always be the first one I grab if I have time.
