If "somebody" introduced a good .52 caliber sabot jacket for heavy pistol bullets, the caliber might live a bit longer.
Many of he 475 bullets are a heavy bullet for 480 Ruger or 475 Linebaugh. The 325gr XTP works well in the Knight 52 sabots. There are also a few good 400gr bullets in 475.
475 bullet selection is pretty weak compared to 458 and 458s are widely available in a larger weight range.
Nothing wrong at all with the Knight 52 other than few conical choices. Paper patching 515s is one of the best options if you dont mind casting your own.
