(this will start a fight, i bet)

Hornady is stating that they load their 458 winchester 500 grains, at 2260 in the light/heavy magnum loads. They also state that their 458 lott does 2300 fps with the same built. hmmm, 40 fps difference?

Now, I don't know what methodology they used, but they campared the 458 std of 2015/500 vs light/heavy mag of 2260.

Of course, you could just build a lott, shoot that 458 in it for factory, and probably pick up as couple 50 due to freebore..

as for pressure... they stated they are loaded to the same pressure.

Jeffe

I don't see how the two cartridges can be only 40 fps different yet have the same pressures out of the same barrel.

Fla,
They can have the same peak pressure. This is because velocity is determined not by peak pressure, but by the area under the pressure/time curve. Evidently the new powders provide a greater area under the P/t curve than the standard powders resulting in a greater velocity for the 458 Win Mag than previoulsy obtainable. These powders if used in the Lott may/should produce the same effect. Namely providing a substantial increase in velocity for the Lott just as was accomplished with the Win Mag.

Think of this way. Draw a sharp point inverted (upside down) "V". This represents the Pressure / time curve for the powder in the Lott. Now draw a semi-circle again inverted (open end facing down) this represents the pressure / time curve of the Heavy magnum Hornady 458 Win Mag.

Area for the Lott - .5*base*height (if I remember correctly).

Area for Win Mag - D^2*3.1414/8

The base of the inverted "V" is the same as the diameter of the semi circle. The height of the inverted "V" is equal to the radius of the semi-circle. Which number is bigger. The correct answer is the semi-circle.

Jeffe,

Your pathetic attempt at fight starting is now killed before it even started. Better luck next time.

Todd E

Todd- Interesting. Some of the new powders are amazing. Why wouldn't they load the Lott with the same or similar powder in order to accomplish a similar improvement in velocity? Thanks.

Jeffe,

Why build a 458 Lott you ask? My reason has nothing to do with pressures or velocities. You see, I'm sufering from an incurable disease. It's called Icantleaveanythingdamnwellenoughaloneitis. I'm sure DaggaRon can tell us the true medical name for this condition. Maybe I should go to a meeting---"Hi, my name is Andy and I can't leave anything damn well enough alone." Why would I want a 458 Win when I can make it into a 458 Lott? Why? Because I can't leave anything damn well enough alone! Same reason one of my 30-06's became a 30 Gibbs. Same reason why my 416 Rigby is becoming a 400 Tembo. Same reason my 98 Mauser 30-06 became a 416 Taylor. Same reason why my 22-250 became a 224-6mm Remington, etc........ So if ToddAxelrod or whoever he is wants to argue about this, then COOL. Because no matter what anyone says I am going to keep an jacking with every firearm I ever buy! There is one possible cure and I intend to try it after my first Africa hunt. The only possible way I can see to be cured of this disease is to have Butch Searcy build me a new double 500/416--I don't think I would want to change anything on that!

Good Hunting,

If you look at some of the other threads, where people actually chrono'd the Hornady Lott and Winmag offerings, you'll find a large difference in what was claimed, and what was actually measured. As I recall, the Winmag didn't get anywhere near what was claimed, but the Lott did.

Pertinax

It has been said that the first step to recovery is admitting that you have a problem. I don't have a problem--it is a disease and I LIKE IT! The 458 Win should have been full length from the start--is it MY fault if they didn't get it right?I would really rather have the 450 Ackley--but, alas, the Lott has been legitimized. Maybe we could find a way to put a belt on the Rigby basic case and leave it in full length cylindrical form, fill it full of 3031 and stuff a 900 grain bullet in........nah, I'll just build a Lott.

Good Hunting,

Andy,
It is not a disease. You (and I) are not sick. Everybody is driven by something or some things, or life is not worth living. The gun nut and hunting thing is a healthy alternative to many vices, even better than hyper-religiosity, a symptom of many psychotics.

If the American Psychiatric Association can declare what is normalcy at their whim, then I can sure declare that the state of the gun nut is normal, or super normal, a good thing, given health in other spheres of the individual's psyche.

Now everybody back to their conversions. Either a religious conversion or a gun conversion can be a very positive thing.

HEY, I'M NOT SICK----HALLELUJAH!!!! Rifles of the world beware--you are not safe from me. You can run, but you cannot hide! I will hunt you down and modify you at every opportunity. Anyone who harbors rifles or gives aid to rifles not wanting to be modified will be considered a terrorist. And even if I don't find you, someone will because we are many!
Thanks, Dr. DaggaRon! It's so nice to be "normal"!!!!!!

Good Hunting,

The bottom line is the 458 Lott is what the std. 458 should have been all along...Enhanced ammo cannot be compared to regular ammo or handloading...

I always got 2350 FPS plus some with the Lott and had one long barrel job that liked a lot of powder and had a fast barrel that would do 2500 if pushed to the max..I only use IMR-4320 as that is the only powder that will do that within pressure limits..Because this gun would do an easy 2400 with mild pressure, I got a good price for it and sold it...It was a beatifull gun with a dark red Bastogne full fiddle back stock...Bob Francis of Westly Richards bought the gun...