LC .223 brass, does year matter?

[chrome_austex]

I have an assortment of LC brass from '03-09 (although most of it is 06,07,08). Are the different years known to have different properties?

In other words, should I sort this stuff by year, or can I treat it all the same?

Its going into my Wylde chambered AR15 for use in highpower competition.

thx

 

[rcmodel]

It is more or less all the same.

But with that said, you probably aren't going to win very many hi-power matches shooting mixed brass.

Sort it by year, and shoot it that way.

If you see any signs of having to change long range sight adjustments a click or two when changing from one year to another?
That is what we like to call a clue it is not exactly the same case capacity.

rc

 

[A and O]

Although I don't buy OFB in 223 it would seem self evident that "09" brass would have a better chance of being once fired. Another indicator would be whether the crimp is still there. Unless I knew the seller of OFB 223 I would want the crimp there for me to remove. If the crimp is still there the year does not matter.

 

[JDGray]

After weighing LC cases, year won't matter. I had piles of brass sorted by weight, and had the same year headstamp in all the piles. For the best accuracy, weigh the cases, shoot the same weight cases together.