If you’re gonna go .410 then buy a Taurus Judge or a Smith & Wesson Governor. You can shoot .45Colt, .410 shotgun rounds, bird shot, and even PDX self defense rounds [my favorite].
They’re illegal in California, of course.
I’ve never shot a Taurus Judge, but in the past I’ve researched it and read that it does shoot both BUT it doesn’t do a good job with either caliber.
In any case, the best gun for the job is the one you have, not the one you don’t!