[russmerle]

I picked up a few Winchester white box 300aac, 147 grn to see how they group and for the brass. I’m also working on my own loads, these have decent muzzle velocity for what I’m looking for.

1) I noticed these at LC brass.
2) there’s an odd, almost octagonal, crimp at the bullet

Is this normal?

These were purchased as new from sportsman’s supply.

 

[russmerle]

They used a collet-type crimper for that... very similar to a Lee Factory Crimp die.

Is it normal on factory ammo? Or are these reloads? I haven’t seen it before on my commercial stuff

 

[russmerle]

The crimp does not bother me as much as the color of the cases. Can you get a pic of the whole sleeve of rounds? Notice how the primer stands out compared to the case? While some of this is normal those cases look a bit like reloads to me. Any extractor marks on the cases?

You can see an imprint just below the rim but it doesn’t have any ejector marks on the rim. The cases look to be slightly corroded with the brown spots. The brass could be DoD rejects too, I don’t know

 

[russmerle]

Winchester is now running the military's Lake City ammunition plant. The crimp and blotches on the brass are normal for Lake City ammo over the past few decades. There is a video on YouTube showing the high-speed loading equipment used at LC.

It’s all coming together now, thanks for the info. I’ll look up the video, I enjoy those.

 

[russmerle]

Thanks for the second look. I believe these now to be factory ammo that just has some grung and odd crimping. Also, I do not think those primers are crimped.

Do they fire well?

Haven’t had a chance, I wasn’t sure if it’s be a return or not. I think I’ll keep them based on what’s been provided here. I think the one ding, just below the case head, is due to the loading machines. It doesn’t line up with my other 300/.223 once fired brass indents so i think it’s ok. Thanks for all the input!!

 

[russmerle]

Thanks for that info. Are you using something like this to cut them down?

2 in. Mini Benchtop Cut-Off Saw

Amazing deals on this 2In Mini Bench Top Cut-Off Saw at Harbor Freight. Quality tools & low prices.

www.harborfreight.com

I’d look up the brass you’ll be trying. Some brass thickness can be a problem. I’m sure the poster knows and does it accurately. My buddy and I tried it and dug up some good info on what brass is best for sizing/necking for 300aac

 

[russmerle]

FLIGHT762 said it. I’m not sure how to tell accept others folks experience with reloading. I went with my buddy telling me what not to use.

 

[russmerle]

Ok great. Can you tell me what brass not to use? Is LC , and SSA brass to try if those are ok for conversion.

This was about 4 years ago. XTAC (I had a bunch of it) and something else. We loaded them at his place and shot together. I see it’s on the list in Flatfoots sticky. That sticky has measurements too, that’s awesome.