It is not excessively "hot," it is good normal ammo satisfying SAAMI in the .458 WinMag.
That is based on Tim Sundles advertised 2250 fps for the 400-gr TSX.
He did that in his rifles with an 18" custom barrel and a 22" factory barrel.
My 25" Shilen would be intermediate in "speediness" to his two rifles, since I got 2350 fps from my longer barrel.
Entrance wound:
Exit wound:
Part of the internal wound:
That was before the Hammer 404-gr SH.
ABE (Aria Ballistic Engineering) advertises some wicked ballistics with that one if you are not a handloader.
No reports on that yet. That stuff is probably "hot" like our .458 WM+ handloads.