Nothing wrong with them at all. MNTBHO (my never to be humble opinion) is that 22" or so inches of barrel is just about right for a 45 cal bolt stopper. I have had a few at 22 and one 458-3" at 20". All where balanced (built that way from the get) well, shot well, handled well and I could hit with them.
One of my all time favorite 458's is the just post64, say 66-67, Super Grades. They still have the pre-64 SG stock shape, but with a bit heavier barrel of 22" long..........sweet.
I have used the 500's predominately, my go-to load is 72gr varget with any 500 for about 2100 in a 22" barrel. The old 400X worked well also with 72grs ReLoder7 for 2350-ish. I shot a Bison with that load.

My last was a 458 Lott on Whitworth (Mark X, Interarms, Zastava, 798, etc....) action. Had a 22" Bauska octagon barrel with a XS ghost ring. I used a Bell & Carlson Medalist frame and made a fiberglass stock with drop belly for the Sunny Hill drop box with Rigby floor plate.