In a small ring mauser, I think you would enjoy either the 338/06 or 35 whelen with a 24 inch barrel. With todays newer powders and good bullets, you are "right there" with the killing effect of the older bullets/powders in the magnums of the time. If you hunt places where 350-400yds are more common, lighter weight monos or Premiums. I shot a Black Wildebeest at a laser ranged 347yds with a 200X from a 35 Whelen AI, zeroed just +2"@100. A zebra at 250yds same load/hunt. A 185 or 210 in the 338 and the 200 to 225 in the whelen, youre gold! BUT...there is much "pinash" in having the only 358 NM on the Mountain, ha? Have a ball friend, jsut let us know what you decided, we "need that closure", smile