Originally Posted by jwp475
Originally Posted by 86thecat
Originally Posted by jwp475
Originally Posted by 86thecat
Originally Posted by jwp475

Long load the 458 Win mag and it will out run the Lott

Why not ream a WM to the Lott and have the best of both worlds if the mag is long enough? CZ550 Safari's definitely have the mag space.


How is that the best of both worlds? Where is the advantage of doing so?

In a CZ550 with a 3.750" magazine, Lott cartridges fill the magazine more completely and so should feed more consistently.
Lighter, shorter bullets are closer to the rifling which should improve accuracy. My CZ is abysmal with shorter bullets, a 350 TSX and many cast are well clear of WM brass before they begin to contact rifling.
Cast bullets should also be more accurate without traversing a wide, long throat and less chance of bullet "stripping" rifling.
A little more powder room will lower peak pressure.
Can still fire WM ammo in a pinch.

Don't see any point in messing with a standard length action but makes good sense to me if the mag is already long.





That same rifle with the long magazine chambered in 458 Win has a longer throat and allows for a longer over all cartridge length thus more powder and higher velocity than a Lott with its shorter throat.

When you rechamber a WM to Lott, you don't change length of the WM throat. Not saying to set barrel back 1/2 inch and then chamber for the Lott.
Reaming to Lott over the WM chamber would be your "best of both worlds". Long throat but longer brass to utilize shorter bullets or to load longer OAL and still have a caliber of bullet seated in the brass.
With either brass when long loading, there is the risk of getting the long OAL cartridge into a short chamber. Proper precautions should be observed, the same as for any non-standard ammo.

Last edited by 86thecat; 01/06/19.