PRIMERS
- Thread starter Shooter74
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DWalt
Member
Why would there be any issues? Any SR primer will be good to use in .223.
All the time and without issues. Before CCI came out with their MIL spec primers, all we had were ordinary small rifle primers.
Edited to add: Do you mean Remington 6 1/2 primers? If so, they're not recommended for .223 or 5.56mm. Use 7 1/2 instead. I've used Remington 7 1/2 primers in AR's for years without a problem.
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OOPS!
A thorough study of primers and best practices will reveal some AR's require an extra hard cup to prevent slam fires! I don't have the data in front of me but a Google search might be interesting since there are primers specific to AR-.223 Rem reloading!
Smiles,
P.S. See post #8 for above mentioned Primer on Primers!
A thorough study of primers and best practices will reveal some AR's require an extra hard cup to prevent slam fires! I don't have the data in front of me but a Google search might be interesting since there are primers specific to AR-.223 Rem reloading!
Smiles,
P.S. See post #8 for above mentioned Primer on Primers!
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Johnrh
Member
Never heard of a slam fire with an AR. Garand, very rarely.
I've used the 7 1/2s for years with no problems. They often seem to give a little better accuracy than the CCI 41s.
Cdog
Member
Don't use Remington 6 1/2's in .223. Too much of a chance of a pierced primer and gas and debris in your face. Plus too great of a chance of a slam fire. Remington 7 1/2's are great AR primers. Best article ever for choosing primers especially for AR's. Scroll through the entire post. Copy and paste if this forum doesn't redirect you there or click on the tab to redirect you. It is a safe link.
Primer Info & Chart + Milspec Primers for Semi-Autos & Other Primer Applications
Primer Info & Chart + Milspec Primers for Semi-Autos & Other Primer Applications
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NJM15
Member
ArchAngelCD
Moderator, SWCA Member, Absent Comrade
The Rem 6 1/2 primers are a bad idea in the .223, pierced primers at a real possibility.
Use Rem 7 1/2 primers, CCI #41 as your first 2 choices then CCI-450, Federal #205 AR Match primers.
There are others made by offshore manufacturers too.
Use Rem 7 1/2 primers, CCI #41 as your first 2 choices then CCI-450, Federal #205 AR Match primers.
There are others made by offshore manufacturers too.
Hair Trigger
US Veteran
My preferred primer is the Winchester Small or Winchester Large in either pistol or rifle primer for all my firearms except my magnum revolvers. I use WLR in my M1A ammo, and WSR for both my AR's, never had an issue with either one for piercing or slam-fire. For the M1A the issue is more for a "proud" seated primer, they need to be recessed below the case head surface, and just seat them as far as they will go in your AR ammo.
Right now, considering the dearth of any brand primer, I'm trying to figure out how to convert my guns to flintlocks until primers become available again.
old&slow
Member
Moe Mentum
Member
Basically, I use any brand SR primer in my .223's , never a problem.
Good to know. I have plenty of Winchester small rifle primers.
CCI 400 no good for ARs?
mmb617
Member
I've used hundreds of those in my Sport 2 without any problems. Actually looking over my reload records it's more like thousands of them.
gmiller0737
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CCI-400s work in ARs. I've used many of them without problem. The reason a "magnum" type primer like a CCI-450 or Remington 7 1/2 is better in an AR is because the cups are a little thicker, making them less prone to piercing or slam fires. They handle the higher pressures of 5.56 loads better than CCI-400s and don't flatten nearly as much as the 400s if using 5.56 loads as opposed to .223 loads.
If you're using only moderate to maximum .223 loads, CCI-400s are likely fine. If you're going to use warmer 5.56 data for your loads, there is an added safety margin with the magnum-type primers.
Experts on the subject can probably provide additional information.
