Building a 6mm ARC Upper

[Lazyfaire]

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Ran a ladder with 108gr Hornady ELD-Match bullets. The pulled bullet in the top left was my fault. I have velocity data, but still need to get it from the ProChrono.

Very nice!

 

[Snip]

After shooting all 40 rounds, I did not see any swipe marks or anything resembling over pressure. Need to anneal the 40 rounds. Will reload another 10 round ladder of 28.5, 28.7, 28.9, and 29.1gr of CFE223. Will shoot from 100yds so I'd expect more drift.

 

[ctcruiser]

Finished the build. Waiting for some more silly crap to add on to it.

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Looks great!

 

[coyotecaller]

Why?

• @Nosferatu's point about better high BC bullets
• Across several forums, (Accurate Shooter, Sniper's Hide, LRH) the consensus is that the 6 ARC is much easier to tune a load for than the 6.5 G.
• Cool factor.

I love my Grendels, and I'll bet that the ARC would be an outstanding addition. One day.

@Snip -- cool thread, thanks for sharing!

After I assembled my 6mm ARC , I was very pleased and surprised by how well it did even past 1,000 yards! I went with the Ballistic Advantage 20" SPR contour barrel and so far have been shooting Hornady's 108gr. ELD-M ammo. I still want you to come out to the place where I shoot and you can test drive it for yourself. Below is a target that I engaged at 1,500 yards. I should say that half of the impacts are from my Howa 1500 6.5 Creedmoor. I'm using a NF NX8 2.5-20 and still have more room on the elevation to go a little farther

 

[Lazyfaire]

After I assembled my 6mm ARC , I was very pleased and surprised by how well it did even past 1,000 yards! I went with the Ballistic Advantage 20" SPR contour barrel and so far have been shooting Hornady's 108gr. ELD-M ammo. I still want you to come out to the place where I shoot and you can test drive it for yourself. Below is a target that I engaged at 1,500 yards. I should say that half of the impacts are from my Howa 1500 6.5 Creedmoor. I'm using a NF NX8 2.5-20 and still have more room on the elevation to go a little farther

View attachment 1909500 View attachment 1909501 View attachment 1909502

 

[Lazyfaire]

But the smaller hits are 6 ARC I'll bet and they are in the low middle

 

[P7M13]

After I assembled my 6mm ARC , I was very pleased and surprised by how well it did even past 1,000 yards! I went with the Ballistic Advantage 20" SPR contour barrel and so far have been shooting Hornady's 108gr. ELD-M ammo. I still want you to come out to the place where I shoot and you can test drive it for yourself. Below is a target that I engaged at 1,500 yards. I should say that half of the impacts are from my Howa 1500 6.5 Creedmoor. I'm using a NF NX8 2.5-20 and still have more room on the elevation to go a little farther

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Nice. Yes, I need to make that time.

 

[coyotecaller]

But the smaller hits are 6 ARC I'll bet and they are in the low middle

Correct
There's seven hits in the intended point of aim, vicinity of orange and one just under and one towards the left side. There were several other distances that I shot that day with a couple of friends. Here's some ideas of what the other steel look like and size in reference compared to a can of marking paint

 

[coyotecaller]

Nice. Yes, I need to make that time.

Let's make it happen once this heat wave passes. I've been meaning to get in touch with you to get some trigger therapy. Place isn't terribly far, about 45 minutes from Vancouver

 

[ryan300]

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Ran a ladder with 108gr Hornady ELD-Match bullets. The pulled bullet in the top left was my fault. I have velocity data, but still need to get it from the ProChrono. .
10 rounds. 27.8, 28.1, 28.4, and 28.7gr. At 50 yrds, there's not much difference between any of them. The last photo is with 28.7gr.

Hey snip, how long of a tube, velocity of these groups?

 

[Snip]

Hey snip, how long of a tube, velocity of these groups?

22" Shaw barrel. I have velocity data, but unsure if its the right data for the group.

 

[Sxsnuf]

Correct
There's seven hits in the intended point of aim, vicinity of orange and one just under and one towards the left side. There were several other distances that I shot that day with a couple of friends. Here's some ideas of what the other steel look like and size in reference compared to a can of marking paint

View attachment 1909548 View attachment 1909549 View attachment 1909550 View attachment 1909552 View attachment 1909553 View attachment 1909554 View attachment 1909563 View attachment 1909564 View attachment 1909566

I've been wondering if tie plates are suitable for shooting steel. It appears they are.

 

[coyotecaller]

I've been wondering if tie plates are suitable for shooting steel. It appears they are.

Long as your distance is 350 yards or more, you should be good. It's hardened steel but not AR 500