6mm ARC Velocities

[The Guide]

Anyone see the new Federal Factory 108 Berger Target load that is coming out in the Gold Metal Match line? Midway has it as coming soon but doesn't have a velocity number with it yet.

Jay

 

[General RE LEE]

Anyone see the new Federal Factory 108 Berger Target load that is coming out in the Gold Metal Match line? Midway has it as coming soon but doesn't have a velocity number with it yet.

Jay

Interesting. I might get a box and if I my rifle likes it, I’ll try to reverse engineer it.

 

[The Guide]

Interesting. I might get a box and if I my rifle likes it, I’ll try to reverse engineer it.

I'm glad to see options other than the big red H. I just hope that it isn't anemic gas gun speeds. A 2750 fps 108 grain factory load would be a game changer.

Jay

 

[Mtnmilsurp]

I average 2578 FPS from a 20 inch Faxon-barreled AR with factory 108 ELDM after 40 rounds.

UPDATE: I added a suppressor and swapped out the MagnetoSpeed Sporter for a Garmin Xero C1 and averaged 2652 FPS with that 20" faxon barrelled AR for rounds 70-90 on the barrel. Same lot ammo

 

[Mtaylor]

Didn’t see a threads specifically for 6 ARC, so figured I’d get this going for people to share velocities and barrel lengths on their 6 ARC. This should help folks get a baseline of what to expect when they are considering building one.

16” Proof stainless AR barrel, suppressor, factory ammo. Accuracy was about equal between the factory 108 eldm and factory 103 eldx. These are the first shots down the barrel so I am expecting them to speed up and settle in a little.


View attachment 781251

View attachment 781247
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Just curious which gas block did you go with? Adjustable?

 

[TxLite]

Just curious which gas block did you go with? Adjustable?

Yes. The superlative arms adjustable

 

[plbour]

RTR 11.5" CPO gas.
108 - 2289.8
105 - 2308.5
103 - 2291.4
Druid Hill 90 ELDx - 2355.2
80 - 2597.1
Druid Hill 75 Vmax - 2613.9
Druid Hill 58 Vmax - 2924.7

RTR 11.5" CPO gas, silencerco 46M
108 - 2301
105 - 2321.3
103 - 2322.5
Druid Hill 90 ELDx - 2346.5
Druid Hill 75 Vmax - 2660.3
Druid Hill 58 Vmax - 2986.7

Sanders 18" Rifle Gas
108 - 2599.4
105 - 2654.6
103 - 2603.7
Druid 90 - 2734.5
80 - 2919.8
Druid 75 - 3030.8
Druid 58 - 3381.3

I'm still trying to get the sanders upper working, having some bcg sticking issues. I have an 18" BSF carbon fiber coming for light weight build.

 

[douglasfir]

Any more data on 6mm ARC velocities with factory ammo and 16" barrels?

 

[UnckleBob]

18 inch proof steel 1-7.5 twist gasser.

Factory hornady 108 ELD.View attachment 840722

Factory hornady 80 ELD VT.View attachment 840727

Mild 30 grains lever 95 VLD Hunting.View attachment 840720

New craddock precision RTR 14.7 1-7 twist 6 ARC gasser during break in. 120 rounds on it now. I don't believe it's speed up all the way.

Mild 30 grains Lever 95 VLD Hunting.View attachment 840721

Factory hornady 80 ELD VT. Forgot to takes a picture. 2779 fps SD 20.5 10 shots.

28.4 grains AR Comp 75 Vmax.View attachment 840726

Factory hornady 108 ELD.View attachment 840725

29.6 Lever 105 hybrid. My go to load. View attachment 840724

What kind of case do you have on your chrono?

 

[4th_point]

What kind of case do you have on your chrono?

FYI - Looks like a Gray Ops.

 

[Bigwilly556]

What kind of case do you have on your chrono?

Garmin Xero Bump Cover – Gray Ops CNC

grayopscnc.com