Yea it was a mistake by me, what i thought to be 7.62 nato ammo actually turned out to be 308 ammo which it doesn't like shooting so I just picked up some good 7.62 nato ammo im gonna shoot today and see if there is any issues with it or not.
Printable View
Yea it was a mistake by me, what i thought to be 7.62 nato ammo actually turned out to be 308 ammo which it doesn't like shooting so I just picked up some good 7.62 nato ammo im gonna shoot today and see if there is any issues with it or not.
As a rule of thumb Military ammunition seems to have about a 10% less capacity that civilain ammunition - as the outside dimensions are the same this can only mean that the Military stuff has thicker walls and is therefore stronger.
Click the link for some interesting info - make your own mind up.
7.62x51mm NATO or 308 Winchester? What's the Difference?
Yea, military cases usually have thicker cases. I shot some i believe its m80 lake city arsenal 7.62 nato ammo today and it does seem to be bulging the cases. They are about .006-.010 thicker towards the bottom after being fired than the unfired cases. Is that a big issue?
No. It's perfectly normal - and entirely within the deformation limits of decent brass. Even with the fairly tight SAAMI specs for US sporting arms, there's .011" difference between the minimum cartridge base diameter and the maximum chamber diameter.Quote:
Originally Posted by boostedawd91
https://www.milsurps.com/images/impo.../149yu80-1.jpg
Note tolerances of plus .002" on chamber diameter and minus .008" on cartridge body diameter.
Im probably not gonna be able to reload those cases that have expanded correct? If i shoot again they will probably expand more than the case can handle
No, they should be fine for reloading. Again, .010" expansion forward of the solid base portion is within the normal range and nothing to worry about.
Well i sent the gun down to brian at bdl limited, a enfield specialist, to have it checked out and a new bolt head fitted to tighten up the headspace. He just got back to me confirming that its way out of spec so once i get it back, ill let ya know how it shoots. Before my groups were getting worse everytime i shot it so looking forward to see how it does once it's nice and tight
I don't suppose they responded yet?Quote:
Originally Posted by Peter Laidler
Quote:
Originally Posted by Parashooter
Looks like a 0.0011" rather than a 0.011" difference at the 0.200" datum plane.
But otherwise, the 0.006"- 0.010" radial expansion is nothing to worry about. There's an old thread that tests the outer limits of the safe radial expansion near the base.
---------- Post added at 12:43 AM ---------- Previous post was at 12:42 AM ----------
Quote:
Originally Posted by pcaru1
Yes, yes they did. Page back a bit.
Quote:
Originally Posted by Peter Laidler
Quote:
Originally Posted by Peter Laidler
jmoore- This is what I was questioning about a response. It's been a while. Just wondering what the ILO will come up with.