Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

2 dumb questions

 
LinkBack Thread Tools Display Modes
  #8  
Old 02-05-2012, 02:16 PM
Platinum Member
 
Join Date: Dec 2005
Posts: 2,114
Re: 2 dumb questions

Quote:
Originally Posted by Loner View Post
You do not shoot bolt gun .308/7.62 loads in a gas gun. As stated .308 and 7.62 are
the same. 5.56 and .223 are not. The shorter tighter throat on a .223 can pinch the
bullet as the brass stretches into the throat. I don't think it has ever been a problem in
a bolt gun but it has been in an AR.
I and a few dozen others I personally know have shot thousands of rounds of commercial .308 Win. ammo in US military semiauto rifles.

Why did the US military rifle teams shooting both M14's and M1's with 7.62 NATO mil spec chambers order then shoot millions of rounds of commercial .308 Win. ammo from Remington, Federal, Hornady and Winchester ammo without any signs of a problem? And after the M16 was first allowed for use in competition, millions of rounds of .223 Rem. commercial ammo was bought from the same companies to shoot in them; all without a problem of any kind. All the service teams shooting competition-grade M16's it's first year (1971) used standard commercial .223 Rem. cases to hanadload their ammo with.

This absurd issue came up one time some years ago when I was on a military team, so I called Springfield Armory in Massachusetts to ask them about this. Their engineer told me commercial .308 Win. ammo was safe to use in both the 7.62 NATO barrels they made for Garands and M14 rifles; they knew the military teams were doing it and had no safety concerns whatsoever.

Even Remington's Mike Walker, the guy who headed the design team for the 7.62 NATO round knew it was safe to shoot commercial ammo in the military chambers. He tried to convince Remington to make it a commercial round so it would be just like the .30-06; swap ammo types between both comerrcial and military firearms. But Winchester beat out Remington for the commercial version as they got the first really big military contract for 7.62 NATO ammo.
Reply With Quote
  #9  
Old 02-05-2012, 02:25 PM
Silver Member
 
Join Date: Dec 2010
Location: SD
Posts: 377
Re: 2 dumb questions

The leade or throat of the 5.56 is longer and the actual 5.56 ammo for it is hotter than 223 to take advantage of the longer throat.

If you shoot 223 in a 5.56 it is ok because the 223 is made for a shorter throat.

If you use 5.56 that is really 5.56 in a 223 you may have pressure problems because of the short throat and the ammo is made to produce full pressure in a long throat gun.
Reply With Quote
  #10  
Old 02-05-2012, 02:32 PM
Platinum Member
 
Join Date: Jan 2009
Location: Rochester, NY
Posts: 1,459
Re: 2 dumb questions

Thanks, I have to get one of my ar-15 barrel's checked out as I don't know what it was reamed for?
Reply With Quote
  #11  
Old 02-05-2012, 02:46 PM
Silver Member
 
Join Date: Dec 2010
Location: SD
Posts: 377
Re: 2 dumb questions

Michiguns offers a gauge to check your chamber.
223/5.56? Gage


Michiguns Ltd. - AR-15 Tools and Accessories
Reply With Quote
  #12  
Old 02-05-2012, 02:52 PM
Gold Member
 
Join Date: Sep 2010
Location: Coldwater michigan
Posts: 507
Re: 2 dumb questions

Loner and cogburnr are on track with what I have found too. There is a difference in the throats between the 5.56 and the 223
Reply With Quote
  #13  
Old 02-05-2012, 04:02 PM
Platinum Member
 
Join Date: Jan 2009
Location: Rochester, NY
Posts: 1,459
Re: 2 dumb questions

I should buy the gauge, I've been reading that unless you check yourself, you might get a barrel you may not want.

Thanks

Last edited by etisll40; 02-05-2012 at 04:06 PM. Reason: spelling
Reply With Quote
  #14  
Old 02-05-2012, 04:07 PM
Silver Member
 
Join Date: Nov 2010
Location: NY State
Posts: 341
Re: 2 dumb questions

Quote:
Originally Posted by CogburnR View Post
The leade or throat of the 5.56 is longer and the actual 5.56 ammo for it is hotter than 223 to take advantage of the longer throat.

If you shoot 223 in a 5.56 it is ok because the 223 is made for a shorter throat.

If you use 5.56 that is really 5.56 in a 223 you may have pressure problems because of the short throat and the ammo is made to produce full pressure in a long throat gun.

I agree, Loner and CogburnR have said it best, at least as I understand it regarding the mentioned chambers.

I hope I don't confuse this any more but this thread made me look at My AR, a Rock River Arms. Check to see if your 5.56x45/223 AR has a ".223 Wylde" chamber. The wylde chamber will handle both commercial and military cartridges. My gun is stamped "5.56mm" but in RRA's spec's it's a wylde chamber. I've shot both from the gun and no problems. It is my understanding that the wylde chamber was developed to resolve the issues with chamber specs involving 5.56/223

my .02
__________________
"It is the duty of the Patriot to protect his Country from its government." ~ Thomas Paine ~

A 'do nothing' Congress is not always a bad thing. If they pass enough laws, it should be entirely possible to sterilize one's complete life experience.

"The 'tolerant' left has come full circle... and has now become what they so despised."
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 2 dumb questions
Thread Thread Starter Forum Replies Last Post
My first rifle project...Some dumb questions Crop Damage Rifles, Bullets, Barrels and Ballistics 6 11-20-2009 09:11 AM
Dumb Questions ... Where Does Pink Wood Come From? Gettn2 General Discussion 3 06-09-2009 11:50 AM
OK so im almost out of dumb questions.......or am i? AtownBcat Reloading 2 03-25-2009 02:54 PM
A dumb question due to a dumb rifle driver royinidaho General Discussion 3 08-24-2008 12:01 PM
Two semi dumb questions KRob Reloading 3 11-16-2005 01:58 PM

Current Poll
Do You Shoot Rifle Competition?
YES - 33.72%
764 Votes
NO - 66.28%
1,502 Vote
Total Votes: 2,266
You may not vote on this poll.

All times are GMT -5. The time now is 04:23 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC