Lot to Lot Brass Variations

[HARV6]

So I recently received a boat load of 30-06 ammo and some empty brass from a buddy. He said it's stuff that didn't shoot well in his rifle. And wanted to know if I could use it to make some custom stuff for him. When I got home to sort through it, a bunch of it is mixed up in different boxes. Like a box that says Remington Express 150 corelokt psp, contains Remington 30-06 brass, but 3 different headstamp variations. Is this something Remington does to different lots? Or maybe just different bullet weights? And what is your experience with mixing headstamp variations from the same manufacturer? Without having a chance to weigh them or check H20 capacity, should I assume that they're different enough to cause accuracy problems. I'm not looking for bench rest accuracy, but MOA or better is the goal.

 

[rcmodel]

No, not different lots.

Different eras would be closer to the truth.

Just sort it by haedstamp first, and see if you have enough of anything the same to get started working up an accurate load.

You can re-size, trim and weigh the cases without worrying to much about H2O capacity.

If they weigh the same, they are the same for all practical purposes.

rc

 

[gamestalker]

I deal with this quite often, mostly because I use a lot of once fired brass. Much like RC said, with the first loading, before they've been formed to your chamber, I first sort by H.S.. Then I resize, trim, then weigh them. Most of the time the weights will be in the same ball park, which is good enough for decent MOA paper punching, not BR quality obviously. Then once they've been fired through your chamber, you can get a better idea after resizing and trimming which one's make the best batch by weight, as there will be a bit difference in sized, trimmed weights once the brass has been blown out to the chamber.

GS