6mm ARC Velocities

[schwint11]

Good write up I appreciate the info. Been looking into 6arc

 

[Bigwilly556]

I hated on the 6 arc ever since coming out. Found 2 proof 18" stainless barrels at my local dealer for a steal. Started looking into it further and ended up buying both. Sold one to a buddy. I'm hooked and plan on building a 14.5-16 for thermal use. So easy to load for and factory ammo everywhere. First group 10 rounds in with 95 SMK blems. A mild load of varget approximately 2600 fps.
Took it out on some steel with the same load 5 rds @411 yards. Should have bought all the 95 SMK blems at $14/100.
95 berger classic hunter. Not the best BCs but do they shoot. 5rd groups @100 30 grains of lever @ 2725 fps 9.6 SD and 30.2 grains of lever @ 2772 fps 14.6 SD 20 thousands off. Im at 120 rounds thus far and I don't believe it's speed up all the way.
My buddy's shoots just as good. I'm hooked and this cartridge is just plain fun to shoot and load for. I did shoot some 75 grain vmax with AR Comp with a top load I was getting just over 3000 fps and my buddy ran some 58 vmax with benchmark at 3200 fps ( I dont have my notes in front of me ). 105 hybrids up next.

 

[General RE LEE]

Whelp

I bought a lb of Leverevolution. Might as well try it with some 103 ELDX. Might pick up 150 FPS over my current load which helps with bullet drop in a hunting scenario.

If I hit 2800 FPS out of my 22” Howa with ~ 1 MOA accuracy, I’ll call it good for a hunting load.

 

[PsRpOiGrRiAtM]

Whelp

I bought a lb of Leverevolution. Might as well try it with some 103 ELDX. Might pick up 150 FPS over my current load which helps with bullet drop in a hunting scenario.

If I hit 2800 FPS out of my 22” Howa with ~ 1 MOA accuracy, I’ll call it good for a hunting load.

I think this is a very achievable goal.

 

[VuduDoc]

For those with experience, estimating and hoping to get 2550-2600fps out of a 16” AR with factory Hornady 108M. From what I’ve read here, seems reasonable? Considering a Howa or Tikka build in the same barrel length. Would be 1800fps out to 500yrds locally.

 

[TxLite]

For those with experience, estimating and hoping to get 2550-2600fps out of a 16” AR with factory Hornady 108M. From what I’ve read here, seems reasonable? Considering a Howa or Tikka build in the same barrel length. Would be 1800fps out to 500yrds locally.

It seems possible but likely barrel dependent. Mine is sitting around 2538 with a brand new barrel. I’m expecting it to speed up though. At my elevation (400’) my velocities in my 16” get me just past 500 yards.

 

[peaches]

17 inch Howa: 87 Vmax 2850 fps and 80 TTSX 3000 fps both with TAC.

 

[_S_R_]

Odin works 18” factory Hornady
105 ELD-X 2550 fps
103 BTHP 2525 fps

 

[TX_Diver]

Anyone loading 108 eld-m with staball match?

 

[TxLite]

Adding another range session with the 16” proof barrel. Overall velocities were down 30-40fps across the board from the last range trip. Not sure why. Even when considering small sample sizes, every group was slower than last trip. Aside from the range being ~10-15 degrees cooler and changing brakes between range trips (lantac dragon asr is too long for sico scythe btw, the brake touches the first baffle) no other changes were made. Using the same lot #’s as the previous trip, but different boxes.

Looking at today’s session vs last session, this session averaged 2588 (with 1 shot over 2600) and last session averaged 2615 (with no shots under 2600) with the eldx.

 

[HNTR918]

New Bear Creek 16” barrel in AR side charge upper. 108 ELDM factory. Shots 1-7 over the LabRadar averaged 2480 fps and my drops seemed to line up well to 571 yards.

I shot the 103 ELDx as well and agree accuracy was similar but didn’t put that velocity in my app because the 108 shot so well.

What are your 3 round, 5 round, and 10 round group sizes?

 

[doverpack12]

What are your 3 round, 5 round, and 10 round group sizes?

I’ve only shot a 5 round and then checked zero a few times and the zero check fell in the bull so I called it good. Used the 6 ARC Sunday to shoot a whitetail buck.
5 shot group, as shots 2-6 on the barrel, adjusted and shot the one in the diamond bull as shot 7. Took it to distance after that, I believe 3 distances the furthest being 540 or 560.


I’ll get some higher round groups over the winter but at this point it’s been very consistent, predictable and hits what I shoot at. Those rifles are hard to find and I’m still less than 2 boxes of factory ammo run through it

 

[TxLite]

Took the ARC back out today. Did a 10 shot “group” (2 groups of 5 at the same target). Took it out to 350 afterwards and sent 3.

Mirage was killer today but overall happy with it.

 

[KyleR1985]

Red and green Christmas colors!

Average speed on a box of hornady 108’s.


Loaded up 95TMK’s No pressure up to max load, loaded 10 at 29.5 to see what a group looks like at 100.


16” faxon, I believe it had 100 rounds or so when I got it. So speed should be what it is.

 

[Bigwilly556]

18 inch proof stainless gasser.
105 berger hybrids
1.670 CBTO .065 off
29.6 lever
24*
2570
SD 11.7
.1 grain over max with no pressure signs.

 

[KChunter71]

Next AR build

 

[BasicUtahrd95]

I have a Howa Mini with a 22” sporter barrel shooting factory 108 ELD-M’s at 2620 fps. I have put roughly 180 rounds through it so far and the MV has been very consistent the whole time. I am new to the chronograph game, but I have heard that muzzle velocity should increase a bit after the first 100 rounds or so. I haven’t seen any change so far. Anyone have any experience/data with this, especially with the 6 arc in a howa mini? How much of a MV difference is there one the barrel “settles in”? Or have I heard wrong?

 

[General RE LEE]

I have a Howa Mini with a 22” sporter barrel shooting factory 108 ELD-M’s at 2620 fps. I have put roughly 180 rounds through it so far and the MV has been very consistent the whole time. I am new to the chronograph game, but I have heard that muzzle velocity should increase a bit after the first 100 rounds or so. I haven’t seen any change so far. Anyone have any experience/data with this, especially with the 6 arc in a howa mini? How much of a MV difference is there one the barrel “settles in”? Or have I heard wrong?

I have same set up and with my suppressor, it’s about 2650 FPS. I shoot 108 ELDM handloads with Varget. Very accurate and low SDs/ES. I have about 1500 rounds on bore.

 

[MEdude]

I have a Howa Mini with a 22” sporter barrel shooting factory 108 ELD-M’s at 2620 fps. I have put roughly 180 rounds through it so far and the MV has been very consistent the whole time. I am new to the chronograph game, but I have heard that muzzle velocity should increase a bit after the first 100 rounds or so. I haven’t seen any change so far. Anyone have any experience/data with this, especially with the 6 arc in a howa mini? How much of a MV difference is there one the barrel “settles in”? Or have I heard wrong?

Factory ammo, or handload?
If hand…. Powder? Charge weight?
Please & thanks

I just bought the same. Waiting on rings, etc. Trying to accumulate data at the moment.

 

[BasicUtahrd95]

Factory ammo, or handload?
If hand…. Powder? Charge weight?
Please & thanks

I just bought the same. Waiting on rings, etc. Trying to accumulate data at the moment.

Factory ammo. I don’t hand load…… yet…..