Re: .264 Win Mag Brass
Most fall between 132 to 136 grains, with heavies at 138 and lows at 130. I keep all and use the heavies or lights to work loads or sight in. When processed and weighed they perform very well.
I full length size new cases, check all for proper length, deburr the flashhole, true primer pockets and turn necks (shooting for 80% clean up), then weigh and bag them.
At least once a year I buy a new bag of 50.
After starting this process on brass, the groups got 50% better than before.
.264 Win. Mag. ; 257 Roberts; .223 Remington and many others.