I am in the process of head spacing a new barrel and every time i close the bolt with my sized brass, I cannot extract the brass. I have to push the brass out with my cleaning rod. ( it pushes out VERY easy.)

Now, i just got done changing bolt heads from 223 to the 308 bolthead. I used the guts ( extrctor, ejector, and springs ) from the .223 head and put them in the new .308 head.

I have another bolt (.308) from another gun that I compared to the new one. I noticed that the extractor in this one looks to be shorter when viewing from the top.

So my question is : are the extractors all the same in 308 and 223, or are the machined to match the different case head sizes ?