Beretta, Rizzini, Krieghoff and Merkel build double rifles in .444 for dangerous game hunting up close on the ground. These rifles have been used on African lion, 500-lb European boars, l,000 pound bear, and 2,000 pound Cape buffalo and water buffalo.
And stunts all. For the one manufacturer that builds a 444 rifle, I wouldn't characterize that effort as "for dangerous game." The 444 Marlin is not a dangerous game round and the 45-70 is marginal at best. They sure wasn't usin' a 265 grain Hornady or 270 grain Speer for those feats!
The 444 Marlin is not listed as a caliber available in Beretta, Krieghoff or Merkel rifles. The Rizzini is not chambered for any round that could be considered adequate for dangerous game, except for maybe the 9.3x74R, which again is marginal at best.
