223 in an ar15 reloading questions

xandi · January 8, 2016, 09:28 PM

I have been handloading for my revolver for a little over a year now, and will shortly start hand loading for my ar and I had some questions my manual didn't answer for me
Are small rifle primers all right or do I need to use mil spec?
And do the bullets need to have a cannelure? To prevent set back
Any thing else that that I need to know?
I will be using cfe223

Sharkbite · January 8, 2016, 09:31 PM

SR Primers are fine. I use a Lee Factory Crimp die on all my AR ammo.

steve4102 · January 8, 2016, 09:40 PM

http://www.exteriorballistics.com/re...sgunreload.cfm

Economist · January 8, 2016, 09:42 PM

You don't need mil-spec primers.
You don't need to roll crimp, so canneleurs are irrelevant.
CFE 223 works pretty well in my experience.

243winxb · January 9, 2016, 09:03 AM

I do not use Remington 6 1/2 as the cups are thin and Remington has said to use the 7 1/2 primer for the 5.56 , 223.. Magnum primers have thicker cups also. The CCI 400 shows pressure , by flowing into the firing pin hole, starting with midrange loads for me. This can change between different lots.

Nitescout · January 9, 2016, 11:37 AM

Steve4102,

Thanks for posting that link...It takes a while to read, but some very good info

I think any one loading for a gas gun would benefit greatly from that article...very good stuff!!! I have a batch of once fired LC MATCH 7.62 brass I`ve been saving for a rainy day; I think I`ll head to the garage...

I have some of those GI cases with the cannelure...I always wondered if they would be weaker at that point...As I have reloaded batches until I got the stretch mark or bulge at the web...I guess those cases can go to the scrap yard.

Thanks again!!!

January 8, 2016, 09:28 PM	#1
xandi Senior Member Join Date: April 10, 2015 Location: ga Posts: 321	223 in an ar15 reloading questions I have been handloading for my revolver for a little over a year now, and will shortly start hand loading for my ar and I had some questions my manual didn't answer for me Are small rifle primers all right or do I need to use mil spec? And do the bullets need to have a cannelure? To prevent set back Any thing else that that I need to know? I will be using cfe223

January 9, 2016, 09:03 AM	#5
243winxb Senior Member Join Date: July 26, 2011 Location: USA Posts: 1,730	223 5.56 primers. I do not use Remington 6 1/2 as the cups are thin and Remington has said to use the 7 1/2 primer for the 5.56 , 223.. Magnum primers have thicker cups also. The CCI 400 shows pressure , by flowing into the firing pin hole, starting with midrange loads for me. This can change between different lots.

January 8, 2016, 09:31 PM	#2
Sharkbite Senior Member Join Date: November 4, 2013 Location: Western slope of Colorado Posts: 3,679	SR Primers are fine. I use a Lee Factory Crimp die on all my AR ammo.

January 8, 2016, 09:40 PM	#3
steve4102 Senior Member Join Date: December 23, 2005 Location: Minnesota Posts: 2,955	http://www.exteriorballistics.com/re...sgunreload.cfm

January 8, 2016, 09:42 PM	#4
Economist Senior Member Join Date: September 22, 2014 Posts: 163	You don't need mil-spec primers. You don't need to roll crimp, so canneleurs are irrelevant. CFE 223 works pretty well in my experience.

January 9, 2016, 11:37 AM	#6
Nitescout Senior Member Join Date: December 15, 2015 Location: central kansas Posts: 119	Steve4102, Thanks for posting that link...It takes a while to read, but some very good info I think any one loading for a gas gun would benefit greatly from that article...very good stuff!!! I have a batch of once fired LC MATCH 7.62 brass I`ve been saving for a rainy day; I think I`ll head to the garage... I have some of those GI cases with the cannelure...I always wondered if they would be weaker at that point...As I have reloaded batches until I got the stretch mark or bulge at the web...I guess those cases can go to the scrap yard. Thanks again!!!