204 for deer?? why not 17 remington for that matter?? you have got to be kidding me, I own a 204 myself and to be totally honest with you I don't feel there is even a good enough bullet available for it to be reliable on coyotes much less a deer. yeah a 204 will kill coyotes and deer however in my experience mostly with coyotes the varmint style tipped bullets that are available for the 204 will surface splash or explode before penetrating enough to do the job. one thing that also should be evident is there is alot of opinions out there however most guys really haven't shot enough animals to know what they are talking about. I learned this when trying to find a coyote bullet for my 22-250, tons of guys talk about how great the vmax is and in my experience they suck at those speeds, note to all reading this if you think a 50 vmax at 3900 fps is a great coyote bullet you haven't shot very many coyotes, a quailty soft point bullet like the sierra 1365 will get the job done every time