I have a box of CCI 400 small rifle primers.  I know the #41's are preferred, but should I be concerned using these in my 223 rounds?  Is there a real risk of slam fires?

never had a problem.

400's is all I've ever used.

i switched from 41's to 400's recently and im much happier. the 41's were seating very hard and i actually broke my auto prime lever trying to seat them after about 600 rounds. the 400's go in nice and smooth.

they are a very good primer for the .223

Same here!









 

I've had no problems.  I use both CCI 400 and CCI 450.  Speer #13 recommends both depending on powder used.

Even non-milspec CCI primers are quite a bit harder than other commercial primers.  Seat them properly and you shouldn't have an issue.

CCI/Speer Technical Services says:



You will have to decide for yourself on this one - but I would prefer to stick with the thicker cupped 450, BR4 or the mil-spec #41 myself if possible for a greater safety margin.

No problems with the 400's.  Developed my load for my AR with the 450's but ran real low in primers.  I was able to get some 400's and the group size is very similar.  Think 450's is a little more accuracte for my, but for 3 gunning, the 400's are more than good enough.

Thanks, I think I will give the 400's a try.  I have them and 223 is the only rifle cartridge I am currently loading, so I was hoping to be able to use them.  I also have some remington 7 1/2's which I know are good for 223.

The Remington 7 1/2 BR primer is a better choice than the CCI 400.

I don't see a problem using 450s.  I also don't see the point in paying Speer's ridiculous prices for their arsenal primers, much like many of their other products.

WOW.......someone actually asked CCI.

That is impressive.
______________________________

I wonder how CCI would have responded if they were asked?  

There aren't #41s (or #450) primers to be found.   So, can I use #400 primers to reload for .223 Rem/5.56?

I suspect that they may have given you the GREEN LIGHT.

That being said...........I've used CCI #400 (standard small primers) with .223 Rem/5.56 loads.

My SPEER manual uses them (CCI #400) along with #450 sm. mag primers.  The difference in the recommendations is mostly based on powder type (for that caliber).

The stuff about "slam fires"...............well, it's also appropriate to note that proper seating depth is important as well as the condition of your firearm, etc.........

CCI in their own website states (about the #41)............



I suspect...........that CCI responded the way they did..........in order to PROMOTE if not to BUILD and CREATE demand.  Besides, there are customer loyalty issues at stake.

Aloha, Mark

PS..........remember when we didn't have "military spec" primers offered by CCI?  

Prior to that.......it must have been "slam fire city" at ranges all across the country. LOL.

CCI 400 is all I use anymore for 223. They have not been a problem in my AR. You must decied for yourself.  
I will be trying Wolff's 223 SRP next time I see em on the shelf. I've heard they are also very good.

No problems with CCI 400's.  Just make sure they are seated correctly.

CCI-400  &   Winchester small rifle  for about 22yr now.... use what is available...

You buy new loaded  .223 at store, do you see a warning on the box for "do not use in AR-15 due to slam fires"...  I have not.

Things have changed.  Since non-fflform6 reloaders cannot obtain #41 CCI's other than at robber baron prices, assuming some additional risk is justified.  Just don't be banging the end of the muzzle on the concrete or releasing the BCG catch on an empty mag. with one unfired in the chamber.  Then, there are the Russian Wolf SRM's and SRM556's, still to be had at reasonable prices.

You want Wolf SRM , as in magnum primer. You will like them.

Since I have some Wolf small rifle magnum primers that I just received. Should I be worried?

Nope...........this is an old post of mine........

quote:

Then, as for WOLF primers.

On the Widener's web site......Widener's says that WOLF sm mag rifle primers were to be used when re-loading 5.56 ammo.



*The price has changed.
_______________________________________________

What you do or choose is your decision to make. Be safe.

Aloha, Mark

anyone ever notice indention marks from your primer seater rod while seating the cci 400's?