Standard Primers with AR?

[SevenSixTwo]

Does anyone have problems with using standard commercial primers in military (AR) actions? I've read that CCI have specialised primers to minimise slam fire:

http://www.cci-ammunition.com/products/ ... aspx?id=30

tesnews

[Individual]

Does anyone have problems with using standard commercial primers in military (AR) actions?

No. But then I haven't got a military (AR) action, its just an ordinary one.

[channel12]

Does anyone have problems with using standard commercial primers in military (AR) actions? I've read that CCI have specialised primers to minimise slam fire:

http://www.cci-ammunition.com/products/ ... aspx?id=30

tesnews

No






I've not experienced a slam fire with my AR using standard small rifle primers.

[SevenSixTwo]

Ok, thanks. If I can get them, however, I'd rather not take the risk. Anyone know who carries them?

[John MH]

No, not much call for them in the UK.

If you are going to all this bother to replicate Milsurp ammo why not just buy Milsurp ammo?

[SevenSixTwo]

No, not much call for them in the UK.

Why isn't there?

http://www.cci-ammunition.com/products/ ... aspx?id=30

Military-style semi-auto rifles seldom have firing pin retraction springs. If care is not used in assembling ammunition, a “slam-fire” can occur before the bolt locks. The military arsenals accomplish this using different techniques and components—including different primer sensitivity specifications—from their commercial counterparts. CCI makes rifle primers for commercial sale that matches military sensitivity specs that reduce the chance of a slam-fire when other factors go out of control*. If you’re reloading for a military semi-auto, look to CCI Military primers.
*Effective slam-fire prevention requires more than special primers. Headspace, chamber condition, firing pin shape and protrusion, bolt velocity, cartridge case condition, and other factors can affect slam-fire potential.

If you are going to all this bother to replicate Milsurp ammo why not just buy Milsurp ammo?

[sigh]... :roll:

[John MH]

Because there isn't. But good luck in trying to get some.

[Andy632]

Does anyone have problems with using standard commercial primers in military (AR) actions? I've read that CCI have specialised primers to minimise slam fire:

http://www.cci-ammunition.com/products/ ... aspx?id=30

tesnews

Why not do a survey of all of us who actually use & reload for a straight pull AR and ask if we've ever experienced any slamfires????

I've never had one yet with any of the ARs I've had or have now!


(I have had one with my M14 though which went into the mantlet )

[Dark Skies]

No, not much call for them in the UK.

Why isn't there?

Because slam fires are predominantly an issue with military rifles that have selective fire and free-floating firing pins.
The momentum of a non-retarded firing pin slamming into a primer and causing the rifle to fire unintended isn't an issue with the straight pull bolt action versions of the AR we shoot in the UK.

[SevenSixTwo]

Why not do a survey of all of us who actually use & reload for a straight pull AR and ask if we've ever experienced any slamfires????

I thought I was doing just that!

No, not much call for them in the UK.

Why isn't there?

Because slam fires are predominantly an issue with military rifles that have selective fire and free-floating firing pins. The momentum of a non-retarded firing pin slamming into a primer and causing the rifle to fire unintended isn't an issue with the straight pull bolt action versions of the AR we shoot in the UK.

Why not? The pin is just as free-floaty in a straight-pull as one in a select fire rifle.

My concern piqued because CCI don't recommend use of SR 400s in the AR-15. Also just found this:

http://www.sksboards.com/smf/index.php?topic=56422.0

According to that, CCI 200 LR primers, contrary to CCI's advice, are good to go in .308 but reinforces that the 400s for .223 should not be used.