ULUL Stainless/Portless 6x45 16" AR15 Barrel Group Buy NOW CLOSED

Can you measure the necks on your fired rounds?

I chased a satern 6x45 chamber with a brand new reamer on my handi stub(which is going to shoot lights out based on early results), and I’m getting .269” on fired neck OD. I’m assuming we cleaned up the entire length of the neck as we had to cut the back of barrel off.

It confirms for me that the “barrel” from satern is good.

I’m curious to see what you have for chamber neck dimension. My reamer print shows .270” for chamber dimension of neck.
My neck diameter is about the same as Jesse's .258 for fresh, sized brass & between .2745 - .2750 in once fired brass (although, now I think about it, I didn't clean those necks before measuring)
Would soot make up 0.005"?
 
My neck diameter is about the same as Jesse's .258 for fresh, sized brass & between .2745 - .2750 in once fired brass (although, now I think about it, I didn't clean those necks before measuring)
Would soot make up 0.005"?

The ones I just measured that went through the handi were .269” not cleaned.
 
Has anyone shot their barrels? I haven't grouped mine; just sighted it in. I heard from one member who was having a hard time getting his to group - would like any other feedback you all have.

Also, anyone measure freebore?
I find they can be a little finicky. I had put a suppressor on it while hunting and shot it a couple times to re zero. Wasn’t real confident with point of impact so I pulled it out today (and put a different suppressor on it) and shot to sight in and verify accuracy. It seems to like this suppressor better.
2.28 COAL 87 gr v max with 24.2 grains of TAC. Pretty good quick 5 round group.

Will stick with this load til the bottle is gone.
 

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I find they can be a little finicky. I had put a suppressor on it while hunting and shot it a couple times to re zero. Wasn’t real confident with point of impact so I pulled it out today (and put a different suppressor on it) and shot to sight in and verify accuracy. It seems to like this suppressor better.
2.28 COAL 87 gr v max with 24.2 grains of TAC. Pretty good quick 5 round group.

Will stick with this load til the bottle is gone.
Any idea of your velocity? 24.5 was barely getting me 2450fps......
 
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