Some trivia:
The .458 Lott chambering from the CZ-USA outfit that I bought was in a "Kevlar" (B&C synthetic) stock,
so it was one of their later ones, not a stamped-over .458 WM re-chambering.
But it still had the oldest, original CIP chamber throating and was properly marked on barrel as ".458 Lott" with no over-stamping of the "WM."
It had a .458 WM throat on the end of the 2.810" brass-accepting part of the chamber, as per original CIP homologation for .458 Lott.
Makes me think they chambered the barreled actions in Czech Republic and shipped to Kansas City for stocking.
The Motherland of CZ was obsolete on their chambering reamers ?
Or are the chambers hammer-forged into the barrels with the rifling ?
That would be an expensive bit of tooling to change just for the throat.
The latest CIP .458 Lott chamber matches the late-comer SAAMI .458 Lott chamber nowadays.
No confusion with the .458 WinMag, as SAAMI and CIP have always matched on those chambers,
since 1956 SAAMI.
If you re-chamber a .458 WinMag to SAAMI .458 Lott, the .458 Lott throat is swallowed by the .458 WinMag throat.
You will have the same as the .458 Lott wildcat that Jack Lott built.
That is the best kind of .458 Lott to have.
It can be done by hand with a reamer and a T-handle, like Jack did,
with a non-cutting stop in the belt portion of the reamer.
I have no need for that, prefer leaving well enough alone as the .458 WinMag.
Can't fix perfect.
