French rifle muzzle size? 8mm Lebel and Mas 36

Les Fusils Militaires Français, Chassepot, Gras, Lebel, Berthier et MAS 36
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72 usmc
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French rifle muzzle size? 8mm Lebel and Mas 36

Post by 72 usmc »

Lebel & Betthier, 8x50r Lebel that fires a 8.30mm or .327 bullet


So does anyone know what an almost new Lebel& Berthier barrel should measure land to land for a muzzle wear gauge?
Does any one know what a Mas 36 's barrel measures land to land for a muzzle gauge test.
Anyone see what an actual French armory muzzle gauge looks like and how many thousands of wear was allowed?

see https://www.gunboards.com/threads/muzzl ... t-10766557
from Kelt a quote from above source is :
New barrels acceptance values
Minimum bore diameter 7;98mm.
Maximum borre diameter 8,02mm
Groove diameter minimum 8,30mm maximum 8,33mm.
:arrow: Berthier Minimum bore diameter 7;98mm or .3142 inches
Berthier Maximum bore diameter 8,02mm or .3157

A new barrel should gauge between 0.3142 inches to 0.3157 inches. :dance:

also see: http://www.surplusrifleforum.org/viewto ... 142#p31142
Last edited by 72 usmc on Tue Jul 20, 2021 8:57 pm, edited 4 times in total.
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72 usmc
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Re: French rifle muzzle size? 8mm Lebel and Mas 36

Post by 72 usmc »

I believe we got the Lebel and Berthier here:
https://www.gunboards.com/threads/chate ... t-10768304
Screen Shot 2021-07-12 at 2.13.51 PM.png
Last edited by 72 usmc on Mon Jul 12, 2021 3:50 pm, edited 1 time in total.
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72 usmc
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Re: French rifle muzzle size? 8mm Lebel and Mas 36

Post by 72 usmc »

7.5 Mas 36 rifle fires 7.5x57mm with a 7.84mm or .309 bullet

https://www.gunboards.com/threads/commo ... 6s.162212/
from above source my interpretation for muzzle wear measurements are as figured:
Screen Shot 2021-07-12 at 2.32.53 PM.png
Screen Shot 2021-07-12 at 2.32.53 PM.png (45.44 KiB) Viewed 1076 times
Mas36groovesize.jpg

Note it states the Mas 36 barrel has a minimum bore diameter of 7.50mm or .2953 inches
and has a maximum bore diameter of 7.54mm or .2968 inches


A new Mas 36 barrel muzzle should gauge between 0.2953 inches and 0.2968 inches. (land to land)
:idea: And as one surmises, a Fulton Armory M1 30 caliber gauge will not fit unless you got one heck of a worn barrel on a Mas 36 :lol:
Last edited by 72 usmc on Mon Jul 12, 2021 4:28 pm, edited 2 times in total.
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72 usmc
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Re: French rifle muzzle size? 8mm Lebel and Mas 36

Post by 72 usmc »

Kind of crazy because any French rifle in intact, original condition should be purchased asap. I only worry about a bore or might pass on a purchase if it is a true pitted sewer pipe lacking rifling in the bore. It is just too hard to find nice French specimens.
Many thanks to Kelt and Patrick on GB who helped me find info, any errors in interpretation are mine. I welcome corrections.

A n interesting link about Brass and its enlargement after firing with Prvi Partizan ammunition.
There are the the old and new Lebel Prvi brass cartridges. The box design also differs.

https://www.gunboards.com/threads/coupl ... t-10855655

:arrow: :idea: Just great info on Lebel ammo/berthier: https://www.gunboards.com/threads/berth ... re.675290/
A video about Lebel Prvi brass: https://www.youtube.com/watch?v=XOvl1Ksd1bo



Lebel Prvi ammunition old type (Flat base) (Some have brittle brass) and box:
Screen Shot 2021-10-20 at 7.32.39 PM.png
Screen Shot 2021-10-20 at 7.36.40 PM.png

Lebel Priv new style, like original French cartridges (Ring on back)
Screen Shot 2021-10-20 at 7.40.24 PM.png
Screen Shot 2021-10-20 at 7.40.24 PM.png (97.37 KiB) Viewed 777 times
Screen Shot 2021-10-20 at 7.28.56 PM.png
Screen Shot 2021-10-20 at 7.28.56 PM.png (211.55 KiB) Viewed 777 times
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Re: French rifle muzzle size? 8mm Lebel and Mas 36

Post by 72 usmc »

An Ian McCollum video, Forgotten Weapons about 8mm Lebel ammunition:
French Rifle Ammunition: 8mm Lebel and 7.5mm French
https://www.forgottenweapons.com/french ... mm-french/
a direct link to just the video see https://www.google.com/url?sa=i&url=htt ... AdAAAAABAD

The base of an original French 8mm Lebel cartridge
images.jpeg
images.jpeg (14.14 KiB) Viewed 770 times
This is why Prvi redesigned their new cartridges to look like the original and better anneal their brass.
Screen Shot 2021-10-20 at 7.37.28 PM.png
To old to fight and to old to run, a Jar head will just shoot and be done with you.
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Re: French rifle muzzle size? 8mm Lebel and Mas 36

Post by 72 usmc »

This post saved on the payback machine:
https://web.archive.org/web/20211031005 ... 12&p=31702
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