7.62?

[SThomas3791]

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?

[Rosco]

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..

[fgw_in_fla]

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.)))))

[Rosco]

I explained the 7.62x39 not the 51..ha..sorry about that. **** I am getting old...

[fgw_in_fla]

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....

[Rosco]

The 12 step program isn't working!!

[SThomas3791]

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.)))))

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.

[326477]

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.

[chiefblackbeard]

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.

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)