I'm really surprised that a .45 ACP penetrated the skin, let alone killed the critter. If I were hiking there, I think I'd carry an S&W .50 revolver.
There are many interesting high performance rounds for the .45ACP these days.
Also, there are now 8, 9 and 10 round magazines for the single stack 1911 these days.
Hit send too soon - in fact, if you bought a Colt 1911 Series 80 XSE, you got a factory 8 round magazine, for example. 8 rounds is standard in most aftermarket magazines of original dimensions now (due to shorter followers and modern springs.)
An off-the-shelf Chip McCormick magazine (for a full sized Govt model M1911) holds 8 rounds. FIne and well made magazine - I see them in the store all the time and they seem to sell well.
SO if the hiker was nutz enuf to carry in Condition One.... 9 rounds sounds about right.
Or the hiker could have been carrying a Tarus 24/7 Pro with a 14 rd magazine
Or a XD, or a Glock, or whatever-. THe news stories have never been specific, and the folks seem to be from Outside, as none of the local ‘news’ sources have tried for an interview.
But ya, I suppose if you carried a M1911 or knockoff 45, you would have the magazine in the weapon and two additional magazines for 24 rounds....