He didn't say they didn't work... just said he didn't like them because he has to trail more wounded hogs, for longer distances, than he had to when hunters were using lead ammo. If the stuff works for you, that's wonderful, but I believe his observation is valid (certainly it is from his perspective with regard to his hunters, who span a wide range of competence). There is certainly no shortage of reports, covering many different species, of lots of through-and-throughs with copper, with game not dropping DRT or close to it. This particular guide, by the way, has been at it for well over 30 years (that's just since I've know him) and his hunters number in the hundreds annually. Of course, we all know bullet placement is key, but I am beginning to suspect it may be even MORE critical, in some circumstances with some calibers, with certain copper rounds. Apart from that issue, I don't like the stuff because many of my MOA-shooting rifles (with lead) simply don't like copper -- at all. The fact of the matter is that many rifles simply will not shoot copper accurately. Non-lead proponents don't like to talk about that dirty little secret, but accuracy issues are commonplace. Plus, the stuff is expensive. The poor, one-rifle hunter who can't afford the high cost of ammo or the luxury of buying new rifles until he finds one that can shoot copper accurately... is simply screwed in California now. Either that, or he'll keep going out and risk wounding and losing more game with a suddenly less-accurate rifle. Talk to a a lot of California hunters who've had the stuff shoved down their throats and, believe me, you'll get a hatful of negative feedback on copper ammo. Personally, while I don't like the stuff, I'm happy to have found at least one rifle in my collection (after a lot of royal pain in the butt testing) that will shoot the stuff .75 in. all day long, and I'm comfortable enough with the performance to feel confident that the bullets will do their job if I do mine. However, anyone who went through a similar torturous process just to be able to hunt legally across most of this idiotic state is not likely to turn into a big copper bullet fan anytime soon.