I was looking over some papers I had on my deck.I found a Champlin Firearms Gun Vault paper that had Marks 700 for sale.($105,000 if you wanted to know.)Mark had it built in 1997 and in DEC. of '06 the bluing on the barrels was at 70%.That meens it had to be use,but you never see it in any of his Vids.His beloved .577 and the 600 mostly why not the 700 was it because of the weight 16lbs 6ozs.Any one know?.Dave