For a start: This is my working double rifle with a recent victim. It is a pre-1887 Birmingham made and proofed Jones ul action in .500/.450#1 BPE retailed and signed by A.Robertson&Son in Wick. Wick is a town in Scotland, as far north as you can go without wet feet. http://i1018.photobucket.com/albums/af303/kuduae/Dob1.jpg
It is a simple, unengraved grade with doll's head, nonrebounding backlocks, stalking safes and steel barrels. Many years ago I bought it as a "wall hanger" at a reasonable price, well below a Baikal/Rem. or Pedersoli. Muzzles were completely rusted. Tightened up the action, shortened the barrels to 23" and regulated them to shoot a "nitro for black" load of 70gr N140, foam filler and 350gr Hornady for 1900fps. As you see, it shoots well within "minute of roe deer" and beats Holland&Holland's 1886 winning .450 pattern any time. Mounted with a 2.5 power Korean scope in Warne mounts. This rifle has got numerous red deer, roe deer and boars for me here in Germany.