I cannot let pass unnoticed the fact that it is now a whole month since anyone contributed anything to this valuable site.
Where are you all ? � Is this the death of curiosity ? or does everyone know everything already ?
 
I have not the time today but will shortly contribute some pictures of enormous percussion caps contrasted with a range of normal caps which I have come across in an old tin. �They are labelled as being A4 as far as I can read. �In the tin, there was also a huge nipple for that size of cap.
 
Watch this space (that is, if there is anyone out there, which is becoming increasingly difficult to imagine at this rate).
 
Bill Curtis

Hi Bill,
Yes it is a bit quiet here, there certainly are people out there though & this is a highly regarded site.
I'd be most interested to see these huge caps, since I bought that large tin a few months ago I been quite interested in caps - so few seem to exist especially given that there were so many made.  
Adrian