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Author Topic: Anybody put a 308 in a 270 and live to tell the tale.  (Read 2433 times)

Offline Special T

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #15 on: October 10, 2021, 07:21:35 AM »
Im so glad ive standardized my cartridges...

Glad your safe andnlifed to tell the tale!
In archery we have something like the way of the superior man. When the archer misses the center of the target, he turns round and seeks for the cause of his failure in himself. 

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Offline Jason

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #16 on: October 10, 2021, 07:28:43 AM »
My kids were up shooting once with some high school friends. One of the friends was complaining his rifle was acting weird and wasn't hitting paper. My boys found that he was shooting 308's in a 30.06. The kid didn't even notice when he ejected the cartridges that they were now  straight wall cartridges..lol

I thought that was bad, but shooting a 308 through a 270 would be in a league of its own. Glad your okay, guns can be repaired.

Offline usmc74

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #17 on: October 10, 2021, 07:56:08 AM »
A friend of mine had a 7mm mag rebarrelled.  Go to the range with him to sight in.  First shot blew all sorts of debris out of the breach. Spent shell wouldn't extract, but the bolt opened.  Found a VERY enlarged 270 case once we tapped it out.

Offline actionshooter

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #18 on: October 10, 2021, 08:01:25 AM »
Glad your OK,
You might think about getting it checked out before shooting it again... stress cracks cant be seen and it could be good for a while and then cut loose later.

Just my  :twocents:
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Offline actionshooter

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #19 on: October 10, 2021, 08:06:14 AM »
I was shooting a USPSA match one time and one of the older guys was having miss fires and when it did fire (several times) it sounded really weird.   I walked over and picked some of his brass up and it was kinda pooched out... he got his guns mixed up and was shooting 9mm for his G17 though his G22 .40cal   :chuckle:
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Offline Caseknife

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #20 on: October 17, 2021, 04:12:33 PM »
Was on the shooting bench about a month ago with a Mod 70 FWT in 257AI and a Howa Alpine 6.5 CM.  Was working up loads for the CM and fireforming brass for the 257AI, caught myself as I was closing the bolt, 6.5 CM in the 257AI.  Could have been catastrophic like your situation.  270 Win does go bang through a 7mm Mag, kind of hair raising, that was about 30 years ago.  Definitely have to watch what we are doing on the bench and in the field, glad you are ok.

Offline MeatMissile

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #21 on: October 20, 2021, 08:19:40 PM »
Iíve seen this!  It just so happens that SAAMI 308 ogive will headspace on 270 shoulder in the chamber!  A guy I know put a 308 through a Winchester M70 in 270.  Good thing he was using soft jacketed bullets rather than copper.  Believe it or not, no damage to the rifle.  The case just turned into 308 super Improved.  And...the bullet hit within 2 inches of his group.

Offline HighlandLofts

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #22 on: October 23, 2021, 11:59:21 AM »
That's why one gun and ammo for that gun on the table at a time.
People get killed every year because of screw ups like that.
Good thing no one got injured or killed.
Hundreds of guns a year get trashed because of not paying attention to the task at hand.
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Walk Light, Carry A Big Stick, Never Walk Away. - Teddy Roosevelt
Don't Take Your Guns To Town.   Johnny Cash

Offline hunter399

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #23 on: October 23, 2021, 01:55:42 PM »
Iíve seen this!  It just so happens that SAAMI 308 ogive will headspace on 270 shoulder in the chamber!  A guy I know put a 308 through a Winchester M70 in 270.  Good thing he was using soft jacketed bullets rather than copper.  Believe it or not, no damage to the rifle.  The case just turned into 308 super Improved.  And...the bullet hit within 2 inches of his group.
Yup it was a 30 cal 150 gr hot cor ,traditional cup/lead core bullet. And a long jump between the COL difference probably help . I do believe the rifle is still good ,bolt needs some fixing or a new one.
Still very stupid on my part,and by no means proud of it ,that's for sure. Rifle was given to me by my parents.
And I've killed some of my biggest bucks with it ,so it was or is pretty special to me. I haven't had the heart to tell my folks I screwed it up like that. They would probably buy me a new one ,but that just doesn't feel right to me.
So I was more devastated about the rifle more than anything.
Yes I have changed some habits at the range and also reloading as well as a result.
Two birds in the Bush is always better than one in the hand-that way you can always go to the Bush and hunt another day .conservation=Better hunting.
Wrote by hunter399

Offline NWShooter

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #24 on: November 28, 2021, 11:04:16 PM »
It happens, glad you walked away from it. I sure would be curious as to the velocity of that shot.  :tup:
A empty vessel makes the most noise.

"Every normal man must be tempted , at times, to spit on his hands, hoist the black flag, and begin slitting throats."

Offline hunter399

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Re: Anybody put a 308 in a 270 and live to tell the tale.
« Reply #25 on: November 29, 2021, 03:54:56 AM »
It happens, glad you walked away from it. I sure would be curious as to the velocity of that shot.  :tup:
I have crono my 308 rounds before ,2830 fps is a five shot average. My ar-10 with the same loads are 2690.
48 grain of blc-2 ,which is max in Hodgdon reloading book.
Sometimes I load them with a grain less.47 grain cause I have a two 308 rifles and one shoots better with a grain less.

So ya it should of been right around 2800 or just above on velocity.
That's just off the top of my head ,I would have to look in my data log on my reloading bench .
Two birds in the Bush is always better than one in the hand-that way you can always go to the Bush and hunt another day .conservation=Better hunting.
Wrote by hunter399

 


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