Military vs. Commerical Brass Debate

[Jocko]

After talking with some fellow shooters locally and reading on the net I must
ask this question again.

Any difference between military 5.56 brass and commerical .223 ?

Most the shooters in my high power circle say they use the same loads - i.e. powder charge - for commerical or military brass, there is no significate volume difference in 223 brass. I read this as well in a couple articles on the net, but also read that when using military brass reduce powder charge 2 grains from a previously used load with commerical brass. But did not specify
what calibers.

I weighed some cases and the weight difference is around 5 grains.

Any and all comments and experience would be appreciated on this topic.

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[jmoore]

My experience has been the same. Just check the lot of brass if using max or near max loads if you get a fresh infusion of supplies. I still segregate my brass by mfg. (and year) just to keep things consistent.

ETA Oh, BTW I haven't had to reduce charge weights w/ either brass type.

[duggaboy]

Both new brass, sorted by weight, mouth of cases beveled, sized at neck, and trimmed to same length. Could not tell a difference in accuracy using any powder and bullet combo. I think that I like the Lapua cause it says Match on the base. Oh well. the price is really up there for the lapua, and so I really will stick to the LC new brass.: