I know you can shoot the Winchester in the Lott, but a friend said doing so will erode the chamber and cause the longer Lott cases to stick. Is this fact, or would it take thousand's of rounds to do it? I have a lot more .458 Win. brass than I do Lott. Thanks :confused:

In theory, yes.

In practice - I'd hate to contemplate the task. Can't imagine shooting enough .458 loads to erode the chamber.

Do make an effort to get the chamber clean after shooting. I don't believe you would have any problems if you do that.

I would think anybody who really has a "need " for the Lott are only going to use .458 win ammo as a back-up. I don't think they would run hundreds of them through the rifle like a .357 magnum owner runs .38's through their guns.

444fitch

As for "need' . Does anyone really "need" an Ultra Mag, Short Mag, etc... I know the Lott is an elephant/charge stopper round. BUT when loaded to "hot" 45-70 velocities, it is deadly in swamps, thick timber, etc...and (loaded as designed) will take anything on the planet

Since it is the brass you have and not loaded 458 ammo, just seat the bullets out and work up to 78 grs of AA2230 doing you testing in single-shot mode. When you get a load you like, mark the bullet juncture with the case mouth and order you bullets from andy at Hawk Bullets. For $2 a box he will cut new cannelures where they belong and you will have 458 Lott velocities from the 458 Win case.

AA2230 will not erode anything, but you need to kepp the chamber clean.

I know you can shoot the Winchester in the Lott, but a friend said doing so will erode the chamber and cause the longer Lott cases to stick. Is this fact, or would it take thousand's of rounds to do it? I have a lot more .458 Win. brass than I do Lott. Thanks :confused:

My thoughts are along the same lines as MIKE G, I wouldn't want to be the guy firing all those rounds of ammo out of the rifle. I have a .458 Watts as well as a .458 Lott and between them perhaps (combined) fired 400 rounds in 20 years. It just isn't going to be something you need to worry about. Great moose calibers or Bison getter!

Heat and pressure will erode...chemical corrosion won't happen, but erosion will eventually. Will probably take hundreds of shots before it becomes detectable...maybe 1000 before it becomes enough to make extraction of the longer case difficult.

Even Lott figured out a better way of making cases from .375 brass due to barrel wear...he originally would lathe a .375" shank onto a .458" cast bullet, set it in a .375 case, and fire it. If he was getting detectable wear from fire forming and went to the trouble of die forming brass, it's a sure bet that eventually shooting the short case in the long chamber would roughen the chamber.

Would think that pressure is linear, but it's more a geometric progression...50K pressure does more than twice the erosion of 25K. Can get away with .38's in a .357 revolver for a long-long time becasue (1) the pressure is only 18-21K (2) the erosion is divided amoung all the cylinders.

Have been using short necked 6.5jap (from .35rem.) for about 1000 rounds. The forward part of the chamber, where the longer neck should be, is eroded...don't much case, as I'll only use the short necked rounds. It's not fouling, shows a roughened steel surface, not a layer of crud...but it's only 1/10th inch "ring" at this point.

Thanks for the info. I have a lot of .458 Win brass that I was going to load for "plinking" rounds, but since it will eventually erode the chamber I may just put it on Ebay.
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