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6mm ARC Gas Gun speeds

Finished up a 6mm ARC, small frame AR build with a 20" barrel. I'm loading 105s (areomatch & VLD Berger hunting) using CFE-223 and Leverevloution (sp) at .5 gr. less than max chg. wt. I'm seeing 2500 fps, with 9 fps sd with one powder and about the same with +20 fps increase with the other powder. I don't remember which was faster. To me 20 fps. doesn't really matter.
Both loads shot around 1.25 MOA @ 100 yards, both loads are set to COL 2.260.
Is this what you 6mm arc gas gun shooters are experiencing OR is my rifle running a little slow? Have you learned any tips and tricks?
This is turning out to be a Cool little gun/cartridge combo. I believe with a small amount of tuning ,maybe a new barrel, or not, this little ar is going to be the one to grab on the way out the door.

Thanks to all ahead of time for your insight!!!!!!!!!!!!!!!!!!
 
I have an AR in 6ARC with a 24 inch barrel. Using Hornady 105s I am getting mv in the low 2600s. I wasn't getting the speed and accuracy I wanted with 105s so now I am testing loads using 87 grain V-Max.

I also have a bolt gun with a 30 inch barrel. Using Berger 105s I am getting mv in high 2700s to low 2800s with N140 powder.
 
I shoot a Wilson Combat 18 inch barrel on a rifle I put together. I use this rifle to hunt hogs and yotes. It's also suppressed. I use the max of Leverevolution for AR15's with the 108 ELD-M and CCI-450 primers. My average speed is 2700 fps.
It's a hammer. Killed one hog at 295 yds. This is a 1 mil hold on my thermal scope
 
I shoot a Wilson Combat 18 inch barrel on a rifle I put together. I use this rifle to hunt hogs and yotes. It's also suppressed. I use the max of Leverevolution for AR15's with the 108 ELD-M and CCI-450 primers. My average speed is 2700 fps.
It's a hammer. Killed one hog at 295 yds. This is a 1 mil hold on my thermal scope
Id be surprised if you are in the normal operating pressure. Pushing a heavier bullet 200 fps faster than a lighter bullet from a shorter barrel is suspect.
 
I've had no issues with the rife so far. I inspect everything after each time I shoot the rifle. It's been very consistent. Dropped 17 hogs and 11 yotes this past year. I built this rifle cuz I was tire of carrying my AR-10. Only time will tell.
 
I am shooting a 22inch Shilen in 6ARC and I am getting 2785fps with great accuracy. I am shooting the Berger 105 Hybrids, Starline brass, CCI-450s and N540. I am north of 28 grains and could go higher but I found this fps/group and it's shooting great for me.
 

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