i know somewhere on this site somebody had to ask this question but i cant seem to find anything. can 7.62 be safely fired through a 308 axis? if so, what variations of the 7.62? :usa2:
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i know somewhere on this site somebody had to ask this question but i cant seem to find anything. can 7.62 be safely fired through a 308 axis? if so, what variations of the 7.62? :usa2:
With some modifications, but out the box I don't think so because isn't the rim diameter for 7.62x39 ammo .447ish? which would mean it would need a PPC style bolt head to work. Someone who knows better will be along shortly..
Compliments of AccurateShooter.com
Read the bottom section where its got the (((((XXX)))).
Before we go much further, we want to address the oft-posed question “Are the .308 Winchester and 7.62×51 NATO one and the same?” The simple answer is no. There are differences in chamber specs and maximum pressures. The SAMMI/CIP maximum pressure for the .308 Win cartridge is 62,000 psi, while the 7.62×51 max is 50,000 psi. Also, the headspace is slightly different. The .308 Win “Go Gauge” is 1.630″ vs. 1.635″ for the 7.62×51. The .308’s “No-Go” dimension is 1.634″ vs. 1.6405″ for a 7.62×51 “No Go” gauge. That said, it is normally fine to shoot quality 7.62×51 NATO ammo in a gun chambered for the .308 Winchester (though not all NATO ammo is identical). Clint McKee of Fulton Armory notes: “[N]obody makes 7.62mm (NATO) ammo that isn’t to the .308 ‘headspace’ dimension spec. So 7.62mm ammo fits nicely into .308 chambers, as a rule.” You CAN encounter problems going the other way, however. A commercial .308 Win round can exceed the max rated pressure for the 7.62×51. So, you should avoid putting full-power .308 Win rounds into military surplus rifles that have been designed for 50,000 psi max. For more information on this interesting topic, read the following articles: Gun Zone’s 30 Caliber FAQ; Cruffler.com Technical Trivia, June 2001; and last, but not least, Steve Redgwell’s .308 vs 7.62×51 Analysis, which really provides a definitive explanation. Reloaders should also note that military ammo often is made with a thicker web. Consequently the case capacity of 7.62×51 brass is usually less than that of commercial .308 brass. You may need to reduce recommended .308 Winchester loads by as much as 2 full grains, if you reload with military 7.62×51 brass, such as Lake City or IMI.
M118 LR and the MilSurp Ammo Option
(((((One reason the .308 Win is so popular is the availability of very inexpensive 7.62×51 military surplus ammo. As explained in more detail above, a 7.62×51 chamber is NOT the same as a SAMMI-spec .308 Win chamber. Nonetheless it is normally safe to shoot 7.62×51 NATO-class ammo in your .308 Win because current .308 Winchester rifles are designed for higher maximum pressures.)))))
I explained the 7.62x39 not the 51..ha..sorry about that. **** I am getting old...
Maybe you're suffer from the incurable disease known as "Russian Ammo Syndrome."
My advice:
Take 2 ak47's and call me in the morning....
The 12 step program isn't working!!
this is what i thought but i wasnt 100% sure. i figured anything other than 7.62x51 was a no, no unless your plan is to possibly relocate your nose or worse. so 7.62x51 in a rifle chambered for .308win is acceptable (may not be ideal) but .308 in a 7.62x51 is NOT a good idea.Quote:
Originally Posted by fgw_in_fla
I've used surplus military ammo in both my 308 and 223. (7.62x51 and 5.56mm) Reloaded them as well. I still have 500 rounds of 5.56mm left, with 55g FMJ.
Military in civilian = ok. Civilian in military = not ok.
5.56 in 223 is not always safe. it might work for you, but it creates over pressure (steeper leade, info freely available on the web)Quote:
Originally Posted by SThomas3791