What brass usually has the smallest amount of weight different between cases?

[catgunguy]

I have been having a hard time finding cases in a box of brass that don't vary several grains. It seems that by the time I sort through it, I end up with as many different weight cases as came in the box. It is hard to have enough of the same weight cases to make a up a set for a match.
I would really appreciate any recommendations. Thank you.

I forgot to add that I am looking for 308 Win. Or 7.62x51 brass. I shoot a DPMS LR-308 with the 24" stainless barrel. Using my fired Fed. MatchKing cases and Hornady A-Max 178gr. I have gotten my groups down to a 1/4" at a hundred yards but need more brass.

 

[remiglockoholic]

Lapua

 

[Kirkd]

I buy Winchester and Lapua brass for precision rifle to use on F-class matches. Both are good. I bought 400 pieces of Win in 243 and has a couple that were outliers. Just bought 300 Lapau on 260 Remington. The weight range was from 171.4 - 172.6 grains all
In the same lot. Now to be fair with Winchester I had brass from 3 different lot numbers. I just bought 300
Pieces in Winchester in 7mm Rem Mag, all the same lot number. I haven't git around yet to weighing them. I usually sort by weight once I have completed the entire process of brass prep. Hope this helps.


Sent from my iPhone using Tapatalk Vp H cmhb

 

[lancetkenyon]

I bought 150 Nosler in .25-06, and all 150 were within 2.9 grains. From 184.1 to 187.0. Not bad in my opinion. Pretty close to Remington brass weight, but more consistent.

 

[SierraSR25]

Lapua for sure. My largest difference after prep was only 1.3gr and it was only a few. The majority of it was +\- .2

 

[catgunguy]

Lapua for sure. My largest difference after prep was only 1.3gr and it was only a few. The majority of it was +\- .2

That is what I am looking for. I try to keep all my brass sorted to .2 grs. or less. Thank you.

 

[zipollini]

I recently weighed 50 Norma 6XC cases with my analytical balance. I first weighed them dry and recorded the weights to .01 grains. I then water weighed them using the 21st Century primer pocket plugs.

Primer Pocket Plugs

What I found was that there was very little correlation between the dry weights and the water weights meaning that sorting cases by dry weighing them is a lousy way of trying to estimate internal case volume. Gotta sort by water weighing them which is a real pain in the ass but necessary if you are trying to wring out those low SD and ES numbers.

 

[catgunguy]

I recently weighed 50 Norma 6XC cases with my analytical balance. I first weighed them dry and recorded the weights to .01 grains. I then water weighed them using the 21st Century primer pocket plugs.

Primer Pocket Plugs

What I found was that there was very little correlation between the dry weights and the water weights meaning that sorting cases by dry weighing them is a lousy way of trying to estimate internal case volume. Gotta sort by water weighing them which is a real pain in the ass but necessary if you are trying to wring out those low SD and ES numbers.

Thanks to all that responded.
I learned that I need to buy better brass and give up on dry weighing them and go a head and start the water volume checks.

 

[samnev]

Another vote for Lapua.

 

[rduckwor]

I recently weighed 50 Norma 6XC cases with my analytical balance. I first weighed them dry and recorded the weights to .01 grains. I then water weighed them using the 21st Century primer pocket plugs.

Primer Pocket Plugs

What I found was that there was very little correlation between the dry weights and the water weights meaning that sorting cases by dry weighing them is a lousy way of trying to estimate internal case volume. Gotta sort by water weighing them which is a real pain in the ass but necessary if you are trying to wring out those low SD and ES numbers.

A MASSIVE PITA and probably not worth the effort unless you are among the top 0.1% OCD people in this shooting game.

I salute you sir. You win this thread!

 

[Keizer09]

I've been using Nosler and Norma brass for my 6.5 CM and 300 WM and both have been very good. Nosler is remarkably consistent. I understand that Norma might make Nosler's brass, but I don't know if that's true.

I have noticed that packing for the 500 lot of Norma brass was poor so some necks were misshapen. I use an expander mandrel and all is fine.

 

[Mad_Charlie]

A MASSIVE PITA and probably not worth the effort unless you are among the top 0.1% OCD people in this shooting game.

I salute you sir. You win this thread!

Gawd,,,wait'il he finds out about weighing primers,,dropped my SD by 3...

 

[BuzzBoss915]

What I find useful is segregating my cases. As an example, (say you have 200) and you weigh them, and align them on a board. The first thing I do is take the ten lightest and ten heaviest and use them for load development, sighters, etc. Then, I have (for instance) 40 light cases, 40 heavy cases and 100 that are right in the middle of the range and they will be very consistent, regardless of the method used.


I don't change the load for the heavy and light cases but I shoot them separately. I process all cases together but I scratch a mark on the headstamp so I can put them together after loading. A line marked with a carbide scratch awl in a certain place on the headstamp is very durable, better than a sharpie. Seems to work for me. BB

 

[IA Husker]

Winchester and lapua are both excellent.