I have the same opinion that JVW! You have to choice beetwen a not too expensiv allround rifle caliber 458 Lott, ammunition available, and at the another side a good allround cartridge, but in a expensiv rifle! You need a magnum action and you have problem's to get ammunition! The cartridge 450 Rigby is not very rare in Europe, but you find it only in very nice, but expensiv, Mauser magnum custom rifle's.