What should 300 WSM brass weigh ?

[4bycamper]

After weighing each piece of Win WSM brass I was amazed.
The low weight was 225.2 g and the high weight was 231.7 g.
From the bag of 50, there was 22 pieces in the 220.0 to 220.9 range and 10 pieces in the 230.0 to 230.9 range. The rest were one of these and 4 of those.

And now the question, how do I judge this ? Do I want to stick with just 10 g difference in brass weight or can I expect "one hole target" results from 20 g range of brass weight ?
My ultimate goal is a heavy barrel 7mm/300 WSM target rifle,,if this calliber workes out).

Thanks ahead of time,

Al

 

[Liebetrau88]

before weighing the brass, did you debur the flash holes and trim the cases to ensure that they are all a uniform size, if not, do that, and then re-weigh all the cases

 

[4bycamper]

Thanks Liebetrau88

I already chamfered the case mouths. I just assumed that new cases would be of uniform length. Oops?

What is the best way, or at least a good way to de-burr and uniform the flash holes? This is new ground for me.

Al

 

[B]

I would recommend that you purchase a Flash hole de buring tool with the appropriate size pilot. This is available at http://www.midwayusa.com/ebrowse.ex...oryid=8937&categorystring=9315***731***695***
I think that you will see a slight improvement in accuracy by removing the bur on the flash hole. Good luck!

 

[4bycamper]

Thanks B,

I'm looking for one ASAP.


Al