You don’t think 200,000 to 250,000 is enough research?:rolleyes:
I would say 200,000 reloads is sufficient research.
Then contact the military and maybe they will lower their standards on your say so. :sarcastic:
I’m not sure how many rounds the military tested to come to that conclusion nor their testing process. My experience is with 6 different ARs over the course of 7 years using CCI #400 primers and no special process. I just shot the ammo I reloaded in the rifles I owned. Not anything close to a formal test. Just experience. My intent wasn’t to brag it was to state my personal experience that is contrary to the statement made. I’ve only heard and read about slam fires for several years. I’ve never experienced one personally. As of last year I switched to Wolf SRM primers because they are cheaper and produce more accurate ammunition than any domestic primer using the same load. Otherwise the CCI #400 was the best primer of the domestic breed in cost and performance.
Raven, I have witnessed 2 slam-fires that I can recall on the highpower line where both shooters used winchester small rifle primers IIRC (Happened in E Central FL with two different shooters on two separate occasions). I’ve stuck with CCI mil primers after those incidents for autoloaders.
Where did you pick up said primers I’d like some
Raven Armament
I have had my AR15 rifles less than two years, the reason for this was because the first M16 rifles they handed us in the service were a POS and jammed every time we fired them. The only reason I have “any” semi-autos now is because of the influence of my two sons in their early thirties. I was always a bolt action action rifle and revolver guy, and now I have rifles and pistols that throw perfectly good brass away that drives my brass OCD crazy. 
The slam fire problem occurred during the testing phase and came to a head in 1963. With the M14 and M16 commercial contract ammunition there were slam fire problems when loading a single round without the magazine in place. Thicker primer cups and making the firing pins lighter reduced the problem to less than 1 in 10 milion chance of a slam fire. The first primers used by Remington in their first batches of ammunition were the 6 1/2 primers and they had to be changed to 7 1/2 primers with thicker cups.
NOTE: The Remington 6 1/2 primers have a cup thickness of only .020 and these type primers are not even rated for higher pressures that the military loads their 5.56 M855 ammunition today. So I’m loading with thicker primer cups in tight fitting primer pockets. And the rest of you can use any primer you want, just don’t cry about any problems you might have. (This is for all of you reading this posting)
My AR15 rifles are an experiment to re-educate someone who still is not crazy about the caliber and direct impingement gas system. I’m old fashioned and still think the M1 was the greatest battle rifle ever made. I only reload my rifles with free floating firing pins with the primers that have the thickest cups. I do not use the CCI# 34 or 41 primers and the majority of the time use Remington 7 1/2 primers. This dates back to reloading my first semi-auto rifle the SKS which also has a slam fire problem and they make a replacement firing pin for it with a spring loaded firing pin. Never say never, if you go to the DCM forums you will read more about slam fires with the M14 and AR15 type rifles. I also always load my ARs from the magazine and never single load a cartridge because of the increased bolt velocity and the free floating firing pin.
So just remember when you reload you are not shooting milspec ammo and you also don’t have crimped primers that “can” cause problems.
A FAL will do it under those conditions also - with Federal GMM primers in my case; while doing some accuracy testing / load development. The FAL will show you a nice ding on a chambered, but unfired round, btw. Not so much for an AR.
I now use CCI #34s for any semi-auto .308/7.62 and use a proper manual of arms (including just for accuracy testing). Never had an issue with ARs and commercial SRPs, but I only load from a mag. I currently load Rem 7 1/2s, but have used most U.S. commercial.
My standards and the standards of the US armed forces have nothing to do with each other. If you’re that frightened of a mishap while shooting centerfire then Daisy or Gamo has something more your speed.
Its a shame you have such low standards.
And why I don’t let other people load ammunition for me, my standards are higher after reloading for over 46 years, and its called experience.
Isn’t it great that I don’t need your standards and you don’t need mine.
It must be hell living in fear.
Warning:
Remington does not recommend this primer for use in the 17 Remington, 222 Remington, 223 Remington, 204 Ruger, 17 Remington Fireball. Use the 7-1/2 Small Rifle Bench Rest primer in these cartridges.
This 6-1/2 Small Rifle primer is primarily designed for use in the 22 Hornet.
Small rifle primers having a .020 thickness cup are for “lower” pressure cartridges and .025 thickness cups are for higher pressure cartridges.
All the information in the world is written in books and all you have to is read…or remain ignorant of the facts.
Go ahead and use the thinner cups and smoke em if you got them.
OK, so based on the .025 threshold, I take it to mean that all of those large rifle primers are safe for a .308 in an AR platform without risk of slam fire, yes?
That is my understanding, and none of my reloading manuals calls for any CCI #41 or #34 primers. If you look at the service rifle loading data for the .308 they all used standard primers even for the SKS which has a bad rep for slam fires.
Also as long as you load from the magazine the bolt velocity is low enough to not worry about it.
I can say that my XD 40 sc will fire all small rifle primers except the CCI #41 mil spec primers.
Never tried the #41s, as they’re usually more expensive and not necessary for ARs. The only gun I’ve ever seen slam fire was that Korean rifle that takes AR mags… forget the model off the top of my head.
The Wolf SRMs will fail to ignite at about 1% in my G17. I try to keep some small pistol primers for 45 ACP with the small pockets… and Wolf is way too good in rifle to be wasting them in Pistol loads.
Remington ran Lake City Army Ammunition Plant from 1941 till 1985 and they didn’t use CCI#41 Primers or anyone else’s primers.
Below is a very good link on testing small rifle primers, click on the link and look at the primer test photos. In reloading manuals they tell you to use magnum primers with ball powder. The Remington primers in this test were called “mini-flame throwers”, now guess what primer Remington used at Lake City to light off ball powder.
Primers - Small Rifle Primer Study
A Match Primer Study in the 6BR Cartridge
By Germán A. Salazar
http://riflemansjournal.blogspot.com/2009/06/primers-small-rifle-primer-study.html
Now guess what primers I use with ball powders in my AR15 rifles, and they have a .025 cup thickness. 