Hornady TAP is available to anyone with the cash from several vendors.
Its okay ammunition, but not the magic bullet some like to think it is. Federal Tactical Urban, with the Sierra GameKing bullet, is a lot more accurate at longer ranges and just as effective (and non-penetrative of walls, etc.) up close.
Actually, up close, where 99% of us will employ our rifles, good old M193 ball is as effective as anything. If you're worried about shooting through walls, don't use a rifle.
That shouldn't be too hard to figure out...
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