7.62 in .308 Winchester Model 70 Coyote?


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texastony
October 14, 2008, 09:51 AM
Ok,

I did a quick search here and on the web and I could not find a definitive answer to my question. I have read that it is not wise to shoot commercial .308 Winchester in a 7.62 rifle. But it is ok to shoot milsurp 7.62 rounds in a modern .308 Winchester rifle. Is that correct?
Here’s what I have .
Winchester Model 70 Coyote (Pre-FN)
Similar to this but in .308 and gray laminate. http://www.winchesterguns.com/prodinfo/catalog/historic_detail.asp?cat_id=535&type_id=956&cat=001C

So, would I be ok shooting 7.62 out of this rifle? Not a steady diet, but just in case.

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USSR
October 14, 2008, 12:21 PM
texastony,

With your rifle, you can shoot either .308 Win or 7.62x51 without problems.

Don

Carl N. Brown
October 14, 2008, 12:38 PM
7.62x51mm military brass tends to be thicker and harder than commercial 308 Winchester brass. Commercial 308 hunting loads are usually have brass is softer, case capacity slightly higher and bullet weights heavier than advisable with semi-auto military rifles in 7.62x51mm.

My son has a Savage 110 bolt-action in .308 and 7.62 FN FAL and HK91.
.308 and 7.62 loads both OK in the Savage, but 7.62 loads only for the FAL or 91.

Carl N. Brown
October 14, 2008, 12:39 PM
In other words, what USSR posted.

texastony
October 14, 2008, 01:12 PM
Excellent!!! Thanks guys!
I knew I could count on the knowledge here at THR.

Ridgerunner665
October 14, 2008, 01:22 PM
7.62x51mm = 57,500 psi
308 Win. = 62,000 psi

The 308, in commercial form, is loaded hotter than the NATO load...NATO ammo is fine in any 308.

USSR
October 14, 2008, 02:19 PM
7.62x51mm = 50,000 psi
308 Win. = 62,000 psi

The 308, in commercial form, is loaded hotter than the NATO load...NATO ammo is fine in any 308.

Not again.:rolleyes: It is the misinformation that never seems to die (see thread below).

Don

http://www.thehighroad.org/showthread.php?t=399471

Ridgerunner665
October 15, 2008, 03:35 AM
There is truth to it USSR,

All you need to do is look at 308 "Service Rifle" reloading data...for example, the max charge of Varget in a bolt gun, according to Hornady #7, is 44 grains with 168 grain bullets...In the 308 "Service Rifle" section it says 42.7 grains is max.

I know that the military uses case mouth transducers to measure pressure, which measure the pressure after it peaks...SAAMI uses mid case transducers that measure peak pressure.

It was early when I made my first post up there, and I should have done a better job on it...I will edit it so that it will be correct.

Or you could always just pull the bullet out of an M118LR round and measure the case volume (water), then weigh the powder charge (RL15)...and run it through QuickLoad, and see for yourself.

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