Theoretically, they should be 50/50 but the reason I started this experiment is because I noticed a few years ago I was hatching a disproportionately number of male birds. Then began putting the observation of pointed eggs versus round eggs into the theory. It sounds crazy and 'theoretically' shouldn't be but that has been my observations.
I have hens that lay both types, pointed and round. And others as you said, some only lay pointed and others only round. Some of the ones that lay the blunt eggs tend to lay some of their eggs that are actually completely round! I have also noticed that those eggs are almost never fertile and if they are, the embryos will 'quit' somewhere along in the incubation process. I haven't broken it down that far as to what each of those hens eggs turn out to be, yet.
The reason I'm using Goldens and Amherst only, is because they can be sexed at hatch, whereas with the True pheasants, I would have to band or mark them somehow to 'wait' and see what sex they are...also easier to get them mixed up in the banding or marking process. With the Ruff pheasants I'll know immediately.
Basically, just doing this for my own curiosity, and see if it's just a fallacy or if there is something behind the observations.
Also, some eggs are easy to tell which end is pointed but it's the ones that aren't quite round or pointed that throw the proverbial 'monkey wrench' into the picture...it could go either way. 
