You can't find hardly any of the guns he talks about, for starters, and if you do, they will cost an arm and a leg and are "dont shoot it" collector's items to boot.
It's an entertaining read, tho, and so is his "Hell, I was there". You won't miss anything of value for realistic ability-knowledge if you haven't read it, however. Elmer never even pointed a gun at anyone, much less was a cop, in a gunfight, etc (as many believe today). I've held men at gunpoint 4x, and have had them pointed my way, too. Elmer considered a .45 L colt SA derringer a better choice than a hot-loaded, locked Breech Star 380, using soft lead, 85 gr hollowpoints, at 1300 fps. That's just nuts. 1 shot per second, SLOW first shot, more size and wt, etc, etc, just because you THINK a .45 bullet hole is such a big advantage. Well, lots of gunfights have proven that it's not.