Thank you Hickey! As I believe Peashooter is new to this game, I think he can be excused punishment for making an honest mistake, and you have now put him on the path to righteousness. It is people who should know better that need hanging, drawing and quartering!
Peashooter - You will have picked up from the foregoing that one of my many foibles (rants?) is the use of the term "Heads" for bullets. It is incorrect, but you were not to know as so many people, including so called knowledgable dealers, use it.
Unfortunately, there is no decent website that shows the various bullet types for the .303 round. The Municion Spanish site is OK, but has many mistakes with regard to .303 headstamps, as do most of the other sites.
My own .303 book, mentioned by smle2009, only includes descriptions of bullet types. The next volume, now about 75% written, will have photographs of every mark of .303 together with all known headstamps (but not every date). An example page for the Drill D Mark VI is attached.
In the meantime, if you post the headstamps you need information about, I will be glad to post pictures of the complete round.
Regards
TonyE