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RB444
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Posted: October 14 2009 at 11:23am | IP Logged Quote RB444

Anyone have any idea what the pressure rating on the 8mm lebel rifle round is?

I have looked everywhere I can think of and can't find anything on what the pressure rating was/is.

Thank you

v/r

Edited by RB444 on October 14 2009 at 11:25am
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Rock
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Posted: October 14 2009 at 12:15pm | IP Logged Quote Rock

RB444,

First welcome to the forum, hope you enjoy your stay.

According to the Lee Modern Reloading Manual – Second Edition the following was shown:

Pressures are based on the weight of the bullet you intend to use for loading, bullet weights range from 125 gr. – 220gr.

On the light end of the bullets weights 125 gr. pressures are shown in the 22.000 to 27.000 range.

With the heavier bullets pressures seem to range in the 30,000 to 37,000 range.

Depending on the condition of you rifle would determine just how high you would want to push pressures. It is advisable with any older rifle to have a gunsmith check dimensions of your chamber and head space, and review the firearm in total before shooting or reloading for the weapon.

Hope this gives you some help.


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RB444
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Posted: October 14 2009 at 12:47pm | IP Logged Quote RB444

Thank you kindly Rock.

v/r
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lovesrugers
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Posted: October 14 2009 at 1:15pm | IP Logged Quote lovesrugers

Well I knew I had this somewhere. According to a spreadsheet I have on hand the max CIP operating pressure for the 8x50R round is 44,950 CUP or 51,475 psi. Keep in mind this is the CIP limit, SAAMI does not appear to have an established limit for this cartridge.

Now keep in mind I am not sure if the 8x50 Lebel is the same cartridge as the 8x50R cartridge. I am still doing some research on this.

Jerry

Edited by lovesrugers on October 14 2009 at 1:19pm
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RB444
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Posted: October 14 2009 at 1:44pm | IP Logged Quote RB444

[Now keep in mind I am not sure if the 8x50 Lebel is the same cartridge as the 8x50R cartridge. I am still doing some research on this.]

Jerry

Jerry,

From what information i could find (which was limited) the 8x50R and the 8mm Lebel (Rifle round, as it seems there is also an 8mm Lebel pistol round)are the same.
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Rock
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Posted: October 14 2009 at 5:21pm | IP Logged Quote Rock

Excerpts from Wikipedia

The 8×50mmR French (8 mm Lebel) rifle cartridge was the first smokeless gunpowder cartridge to be made and adopted by any country. It was introduced by France in 1886. Formed by necking down the 11 mm Gras black powder cartridge, the smokeless 8 mm Lebel cartridge started a revolution in military rifle ammunition. Standard 8mm Lebel ammunition was also the first to feature a boat-tailed bullet (Balle D) which was adopted in 1898.

Remington made rifles for the French during WWI in this caliber.

There are two 8 mm Lebel cartridges, one for the Lebel Model 1886 rifle and one for the Modèle 1892 revolver. They are entirely different cartridges and are not interchangeable.


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lovesrugers
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Posted: October 14 2009 at 6:16pm | IP Logged Quote lovesrugers

My worry is that there is another 8x50R cartridge the 8x50r Steyr and from what I understand it is totally different from the Lebel version. So I hope the info I posted above applies to the Lebel version and not the Steyr version.

Jerry
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STCM(SW)
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Posted: October 14 2009 at 6:52pm | IP Logged Quote STCM(SW)

Here you go Jerry:



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RB444
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Posted: October 14 2009 at 8:28pm | IP Logged Quote RB444

Thanks all.

Interesting that the article puts the Lebel round in the .308 class.

Is there a way to take the loading data on the bottom of the article and figure out the average pressure reading?

Thank you

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RB444
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Posted: October 14 2009 at 9:18pm | IP Logged Quote RB444

STCM(SW) wrote:
Here you go Jerry:



Looking at this page again, wonder why they gave the pressure for the Styer round but not the Lebel?
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