Any 6mm ARC guys on here ?

[5.56×250]

Not the ARC, but I've shot the Whitely 6mmAR for over a dozen years with excellent success. Most used for mid-range competition, I run mostly 142 SMK's at 2750-2800FPS. Cleaned house with 300 yard Egg Shoots using my AR with a 24" Hart barrel. Shoots .25 MOA…At 300 yards, the width of an egg!
Best group…
View attachment 353148

Is that a typo on bullet weight ?

 

[Jason.N]

Just got my 6mm arc put together. 20" proof steel barrel on a bcm upper for a super tight fit. Put 45 rounds in it last week. One box of hornady black and the rest were handloads ( hornady 105s and varget). Everything shot decent. Biggest 5 shot group was about 1" +/- . Best was about .5. Pretty promising start. I did notice that the factory 105s were humming out the new barrel at 2700 fps which seems super fast out of a new 20" barrel.

 

[Greyfox]

Is that a typo on bullet weight ?

Yes….that is a typo….107gr SMK ….apologies…

 

[Eric H]

Running 88Gr HH over 30.5gr of Leverevolution in my 6ARC Bolt gun with great results. My new white tail gun.

 

[Aoudad shooter1975]

I just set up a 16.5in gas gun—don't have a lot of experience as of yet—

 

[Eric H]

I just set up a 16.5in gas gun—don't have a lot of experience as of yet—

Don't worry. You'll find it is very easy to load for using Hornady's load data.

 

[Jason.N]

I've got about 90 rounds down with mine. Picked up about 10-20 fps from the first trip. I loaded up some hornady 105s with varget and starline brass. 25-27 grain in .5 grain increments. I was g2g at 26.5 and hit good pressure and 2 of 5 blown primers at 27 grains. I did have to adjust the gas block up and down. At 26 grains the gas was just right and 27 where i hit obvious pressure it was also over gassed. I think both contributed to the pressure signs. Next round i will try 25.5-26.5 in .2 grain increments. Barrel is still speeding up so whatever node i find will likely change again. I have also have been loading them at factory legnth. Once fully sped up i will do a seating depth test. Another note - my sd's have been fluctuating from 5-20 on 5 shot groups. Hopefully i can find a solid speed and sd node along the way.

For those that have hundreds of rounds in there barrels- how many rounds til your speed plateau'd ?

 

[Dmagna]

I have around 500 down mine, i have an 18 inch proof carbon. Mine stopped gaining at about 75 down the tube. Also good luck with starline or lapua brass, I stopped using both after it all failed. The 6mm arc brass from Hornady is the only brass that didn't belt after 3 firings. Good luck.

 

[Eric H]

That's 4 shots.

 

[Mason Blackmon]

Y'all are making me want a bolt action 6mm arc in a bad kind of way. I have a 6x45 and a 6.5 Grendel already in bolt actions, trying to decide if I need one in the middle

 

[Eric H]

Very first load with 103gr Bison Ballistic Claymoor bullets.

 

[Darryle]

105gr VLD-H over LVR equals 5 dead pigs, 2 immediately inside the trap, 1 just inside the treeline to the rear and 2 in the yard, all got double taps after the initial shot. I didn't have time to take pictures afterwards, I had a service appointment for my truck. But Henrietta made sure I got at least one kill pic. She's considerate that way, plus she's a ham.

I used 14g electric fence wire to wrap each T-post 3 times, top, middle and bottom and I had the panels overlapping at each T-post and they still were able to break out, although at this point the damage had been done. Pigs are stronger than most people believe and more destructive once they have easy pickings. I built that trap and baited it last night after work, took maybe an hour tops, 6 panels and 13-14 T-post. Neighbors probably didn't like the 6am wake up call, but who cares.

 

[Darryle]

Here's a bucket full of dead 6mm ARC victims

 

[Aoudad shooter1975]

We have been dry, dry, dry—have not seen a pig in about 3 months —not one. The last 10 days we have had over 3 inches. I have seen over 30 pigs in 2 days—they are resilient—good hunting!