They did not start using the name AG Parker & C LTD until 1906.

Take a look at the other thread. There is a 360 rifle in unaltered condition. Take a good look at the barrels. Your gun has been rebarreled. You need to make a chamber cast and measure the results to be sure of the chambering.

Greener wrote about the 360 BPE in 1910:
http://books.google.com/books?id=vIffAAA...;q=&f=false

360 BPE -- 30gr cordite -- 300grn bullet -- 1,650fps -- 1813ft lbs

But be aware, there were several variations on the 360. The British makers, like many other were "into" proprietary cartridges.

This is the 303 with both cordite and black powder


The 360 BPE




Pete

http://www.damascus-barrels.com/Movie.html