556 vs 223 reloading.

[dennishoddy]

I can't say that I've ever seen 5.56 dies, but I've loaded thousands of .223. For me, it doesn't matter if the brass is .223 or 5.56 when I'm reloading. I always use .223 load data and I never load to max load.

The only time I have any concern about the differences is if I'm using actual factory loaded 5.56 ammo.

First Bolded part is true.
Second bolded part.....I always search for the max load that is most accurate.

 

[Fyrtwuck]

Max load is not always the most accurate. That's why it's so much fun to reload, experiment and tailor the load for your gun. I don't load very often just for accuracy anymore. I usually load in lots of 1000 at a time and shoot for fun more than accuracy.

 

[swampratt]

MoBoost wrote this..good reading

https://www.okshooters.com/showthread.php?170286-223-vs-556-personal-test-don-t-do-this-at-home