Finnish P-26 Mosin Nagant

stuckon308

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I want to shoot my Finnish Nagant but have read that some are chambered in 7.62x53r. Is there any easy way to tell if mine was? If it helps I'm pretty sure mine was one of the "never blued" versions. I can post pictures if it helps.
 
I guess you didn't read my original post very well. I'm wondering if there is an easy way to tell if mine was chambered for 7.62x53r and not 54r.
 
They are NOT the same cartridge. Although similar.

You can put 7.62x53R in 7.62x54R... But not the other way around unless you want to prematurely wear your bore down. Basically the 54 will fire in the 53, but wear the rifling and some might not even chamber.

But if the rifle has been used a lot - it won't mater. In that case, they are interchangeable.

I have some boxes of 7.62x53R lapua Ammo... Not sure if they even make it anymore.

Here are the basic differences.

Differences between 7.62x53mmR (Finland) and 7.62x54mmR (Russia)
Round length: 77.00 mm (54R: 77.16)
Case length: 53.50 mm (54R: 53.72)
Rim diameter: 14.40 mm (54R: 14.48)
Bullet diameter: 7.83 mm (54R: 7.92)

Your P26 should be 7.62x53R... Unless marked by the Finns as otherwise or shot out enough to take 7.62X54r. The Finns also used captured Russian Ammo in their rifles. Long story short, it's ok to use if it chambers, but 7.62x53R would be more accurate (likely) in your rifle.

Here is more info - please read it.

About the 7.62x53R

https://en.m.wikipedia.org/wiki/7.62×53mmR

About the 7.62x54R

https://en.m.wikipedia.org/wiki/7.62×54mmR

Hope that helps.
 
Last edited:
What ever.
As I said Google your question.
If you want to shoot your mosin, go shoot it with ammo you have as it is not going to make any difference same as if you shoot 223 in 556 or vs versa. Same with x53 and x54
Ps
I do read questions before I post.
However I bastardise both official languages
 
Main difference is in the place where the barrel grooves starts (not sure what is the correct english word).

Easy way to tell if your rifle can safely shoot russian milspec ammo is if the barrel shank has been stamped with a big "D" letter. Unless you see this letter on your barrel, do not shoot russian milspec ammo

Simple as that

V
 
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