Why aren't .700 caliber rounds used in warfare? - Quora
700 Nitro Express Recoil
700 Nitro Express estimated to be worth 225,000 to 525,000 US dollars on display at the Rock Island Auction Company during the third day of the National Rifle Association convention Stock Photo - Alamy
a please: .577 nitro express double rifle and .700 nitro express rifle : H3VR
Holland & Holland - 500 Nitro Express, 600 Nitro Express, 700 Nitro Express Royal Deluxe Double Rifles | Facebook