The kids were shooting a variety of 308 rifles the other day, using 308 Lapua Match ammo.

We prepared and sorted the fired brass as we usually do, ready for loading.

The cases were resize and trimmed to uniform size, and the primer pockets uniformed.

We weigh and segregate them according to weight.

I thought some of you might be interested in the weight variations.

Weight quantity
171.8 1
172.1 1
172.2 3
172.5 2
172.6 3
172.7 4
172.8 3
172.9 2

173.0 6
173.1 8
173.2 6
173.3 10
173.4 8
173.4 7
173.6 6
173.7 6
173.8 6
173.9 7
174.0 6
174.1 7
174.2 14
174.3 10
173.4 12
174.5 4
174.6 3
174.7 2
174.8 2

That's really consistent. I knew their brass was good, but I didn't realise it was that good.

Two grs in a case very good indeed.

The next test would be to fill the cases with water and weigh what each case holds. This will give you a true case volume. Volume will effect shot placement.
I do this with my Match brass for long range shooting and it has made a difference in group sizes.
I then mark the cases with a center-punch dot(s) on the bases and use the same volume cases by dot (s) for a leg of the match.
I learned this tip from shooters in the 70's while shooting in the Navy.
How much does it help? In my shooting about two inches at 300 yards. Not a lot,but it could mean a 9 or a ten -X if it was a score breaker.
Every little bit helps if you do your part shooting.