Can You Shoot 7.62 X51 in a 308 Remington 700
Posted: 12/7/2004 nine:22:31 AM EST
The way I understand it is that the .308 circular develops higher pressures than the 7.62x51. NATO. You should be OK firing the 7.62x51 in a rifle chambered for .308, but in that location may be issues the other way around. The burglarize that comes to mind is the Castilian minor ring Mausers that were converted from 7mm to 7.62x51 NATO. I would exist very careful with those.
From the Fulton Armory:
dumb question i alway thought these 2 ammos where interchangeable but some have told me otherwise whats the story??? jim
Hullo, Jim,
This is a perennial topic, kinda like ".45 vs. 9mm" or "All-time Guns & Loads for Deer."
They are non the same.
They are the aforementioned.
They are not the same, 'crusade the .308 Win was released by Winchester several years earlier the Ground forces standarized the T64E3 as the seven.62MM. You'll get an countless discussion of pressure specs, endless because SAAMI and the Ordnance Dep't measured pressure in different, unrelateable ways. Howver, the bedchamber drawings are unlike.
They are the same, 'crusade nobody (and Clint'southward been looking for many years!) makes 7.62MM ammo that isn't to the .308 "headspace" dimension spec. So vii.62MM ammo fits nicely into .308 chambers, as a rule.
Only in some 7.62MM rifles the chambers are long (to the seven.62MM military spec), notably the Navy Garands with 7.62MM barrels. Thus, using commercial ammo in such a rifle is not a skillful idea; yous need stronger brass. Apply military ammo or the best commercial only, e.g., Federal Aureate Medal Match.
Nigh of the time information technology'due south a distinction without a difference. But if you intend to shoot .308 commercial in a military arm chambered for 7.62MM, first check the headspace with .308 commercial gauges first. You may get a surprise.
All-time regards,
Walt Kuleck
Fulton Armory webmaster
--------------------------------------------------------------------------------
Clint, What'due south the difference betwixt .308 Winchester & seven.62x51mm NATO?
Jerry Kuhnhausen, in his archetype Store Manual (bachelor from Fulton Arsenal; see the M1 Burglarize Parts & Accessories or M14 Rifle Parts and Accessories Pages under Books) has published a somewhat controversial recommendation concerning .308 Winchester and 7.62x51mm NATO ammo, headspace & chambers. I broached the subject with him some months agone. He had his plate full, so we decided to conversation on this in the hereafter. When we do I'll written report the results of our conversation.
I completely agree with Jerry that if you have a chamber with headspace much in excess of 1.636 (say, 1.638, SAAMI field reject), you must use only U.S. or NATO Mil Spec Ammo (always marked seven.62mm & with a cantankerous enclosed by a circumvolve) since the NATO mil spec calls for a far more "robust" brass case than often found in commercial (read .308 Winchester) cartridges. It is precisely why Lake City brass is so highly sought. Lake City contumely is Nato spec and reloadable (virtually NATO is not reloadable, rather it is Berdan primed). Indeed, cheaper commercial ammo can fail at the one.638 headspace (e.g., UMC) in an M14/M1 Garand. Many war machine gas guns (e.yard., M14 Rifles & M60 Machine guns) run wildly long headspace past commercial (SAAMI) standards (U.South. Military field refuse limit for the M60 & M14 is 1.6455, nearly xvi thousandths beyond commercial (SAAMI) Go, & nearly viii thousandths across commercial (SAAMI) field reject limit!).
I likewise agree that 1.631-1.632 is a near perfect headspace for an M14/M1A or M1 Garand chambered in .308 Winchester. But I remember that it also nearly perfect for 7.62mm NATO!
I take measured many, many types/manufacturers of commercial and NATO ammo via cartridge "headspace" gauges too as "in rifle" checks. If annihilation, I have found various Nato ammo to exist in much tighter headspace/bedchamber compliance than commercial ammo. Indeed, sometimes commercial ammo can not exist chambered "by hand" in an M14/M1A with, say, 1.631 headspace (bolt will not close completely by gentle manus manipulation on a stripped bolt, although it will close & role when chambered by the force of the rifle'south loading inertia), though I have never seen this with NATO spec ammo. I.e., if anything, NATO ammo seems to hold at the minimum SAAMI cartridge headspace of i.629-ane.630, improve than some commercial ammo!
So, why ready a very long 1.636 headspace in an M14/M1A or M1 Garand? It probably is the conflict mentioned above. Military headspace gauges say ane matter, SAAMI headspace gauges say something else, as exercise the spec'southward/compliance covering ammo. In a court of police, who will prevail? I think Kuhnhausen gave all those who do this work a safe way out. Still, I believe it not in your, or your rifle's, best interest. Whether yous have a NATO chambered barrel (M14/M1 Garand G.I. ".308 Win."/7.62mm NATO barrels all have NATO chambers), or a .308 Winchester chamber, keep the headspace within SAAMI limits (1.630 Become, 1.634 NO GO, 1.638 FIELD REJECT). This subject is a fleck confusing, and for me difficult to explain in a i way conversation!
Clint McKee
Source: https://www.ar15.com/forums/t_1_5/302561_Stupid___Can_you_shoot_7_62x51_NATO_in_a__308_Winchester_rifle_.html
0 Response to "Can You Shoot 7.62 X51 in a 308 Remington 700"
Post a Comment