7.62x51 Milsurp ammo!!!

mwjones

mwjones

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Just aquired (was given) 71 rounds of milsurp 7.62x51 ammunition. I seem to remember reading somewhere that it may not be safe to fire modern .308 ammo in a gun chambered for 7.62x51 because of higher pressures, but this ammo should be safe to fire in my Browning BLR .308, right?

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Cdn 762x51 , I would have no qualms firing it , you may notice it may be a little tight on the extraction side , other than that good to go......
 
okok, no lube :) I've had that happen with regular factory silvertip ammo, go to eject the round and it sticks. Had to wait maybe 5 seconds for it to cool down a bit, and it popped right out :)
 
rivetc78 said:
NO!

Oil / Lube = BAD! or BOOM!

The extraction issue I believe is just the Brass expands and is tight in the chamber.
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Urban legend. Won't happen. :rolleyes:

What about the HK's that have fluted chambers so that INTENTIONALLY port gases get between the cartridge and chamber? This is to reduce friction!!!

Also see Varmint Al's pages for his experiments and calculations........
 
SandRoad said:
Urban legend. Won't happen. :rolleyes:

What about the HK's that have fluted chambers so that INTENTIONALLY port gases get between the cartridge and chamber? This is to reduce friction!!!

Also see Varmint Al's pages for his experiments and calculations........
Click to expand...

Oil up 5 rds then fire them and let us know how it turn's out. :popCorn:
 
IVI is Canadian military production. That was issued on stripper clips for FN C1 rifles. As far as accuracy goes, don't expect Minute of Angle. Most IVI was machine-gun grade at best.
 
NateC said:
I have fired quite a bit of IVI 7.62, in-fact, on my heavy barreled 7.62 Enfield I could get the bullet holes to touch at 100 meters. :D
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Arguably true, but there were some years IVI loaded undersized bullets that were so sloppy, the DCRA shooters were resorting to .3065" barrels to compensate.
 
7.62x51 milsurp is good to go in a .308 rifle. It's the other way around where you may run into problems. Commercial .308 can be loaded to higher pressure then x51 milsurp, that's not to say they always are but just that they may be.
 
zuke said:
Oil up 5 rds then fire them and let us know how it turn's out. :popCorn:
Click to expand...

Do it all the time. I never clean my guns of oil before shooting. The ONLY time I clean one before shooting is if it has a THICK coating of RIG Gun Grease in the Barrel.

From Varmint Al's website
One well conducted experiment is better than a thousand opinions.
Click to expand...

http://varmintal.com/afric.htm

http://varmintal.com/a243z.htm


What happens is potential case head separation, not a destructive failure of the firearm.
 
The chambers in 7.62x51 are slightly different than the 308 Win chamber, which is tighter and the rifles chambered in it can usually handle a little higher pressures.
I've interchanged both in milsurp rifles and commercial rifles, without a hitch, SO FAR.

Many of the rifles, like the early Spanish mausers, might just be another story. I won't say there will be a catastrophic failure but is it worth the risk? You decide.
 
Fired 20 rounds of it yesterday at 50 and 100 yards, and was suitable impressed with it. Similar in consistency to the winchester factory stuff i've got, except for 2 or 3 that might have been me :) Good deal!
 
The pressure limits for 308 and 7.62 are about the same. The numbers you see quoted (which are different) are because 308 is always quoted using SAAMI measuring system and the original 7.62 numbers are quoted using the old CUP system.

It is like 100 kph vs 60 mph. About the same thing.

The chambers are slightly different. But that will not make any real difference, etiher.
 
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