Lots of soot on spent cases

[bultinkle]

Heavier buffer

 

[FireFlyFishing]

When I do size my brass, I'll run them through a wet tumbler for a bit to get them clean. With my AR brass, I clean them before and after sizing.
I've got a Superlative Arms adjustable block but installed the normal gas block first just to see if I could use it and save the adjustable for a different build, but I'm definitely not opposed to swapping it out.

I run adjustable gas blocks on all my auto loaders. It allows flexibility for any changes you enter into the system…like a suppressor or a change in ammo. It allows you to dial the rifle into proper/optimal operation.

I clean all my auto loaders' brass well. 1. I don't want malfunctions. 2. I do high volume loading on these cartridges, so I want longevity on my dies.

 

[Zen Archery]

Just realized I left out the part about the brass. My reloads you see there are virgin Starline brass—expanded, chamfered, and primer pockets uniformed. I do anneal but not on this first firing.

My experience with virgin starline cases grow 1.0-2.5gr H20. The bigger the case the more expansion. Not saying that's the issue. But I've never considered dirty cases a problem if it's accurate and running.

 

[Shankedit]

A little follow up on this.
I tried some Superformance and it seemed to reduce the soot on the cases. I also got more velocity and better SD out of it too. I'll probably settle on 46.0 grains which gave me 2875fps with the 130 ELD-M. All of my loads working up to 46.0 grains gave me accuracy I'm mostly satisfied with considering how lousy I felt my form was that day. Every one of those "fliers" was me and I felt it. Just couldn't get comfortable behind the gun trying to make sure my brass hit my makeshift "collection point" in my range box.

 

[FireFlyFishing]

Every one of those "fliers" was me and I felt it. Just couldn't get comfortable behind the gun trying to make sure my brass hit my makeshift "collection point" in my range box.