6 ARC gas gun loads

[steve101610]

Looking to start a 6 ARC gas gun load page. Post as much info as you can. I will start.
18” craddock 7 twist
58gr vmax .010 off lands
30.3gr of benchmark
CCI 450 and Hornady brass
3280 fps with single digit sd and consistent 3/4 moa.
Going to start playing with 105 hybrids and varget. These will be jumping about .130 to fit in the mag.

 

[db2000]

There’s plenty of pages already. A2230 is your friend.

Seekins AR Shaw 18” SS 1:7.5”
Magnetospeed V3

7/16/23
84F 56% 29.88 in

Hornady 58 gr VMAX
A2230 32.5
Hornady brass x 5
205M FGMM
BTO 1.6650
COL 1.4900
3501, 3494, 3496, 3486, 3503 SD 6.6 1” (4 were 0.5”) mild pressure
3501, 3494, 3496, 3486, 3503,
3500, 3512, 3505, 3496, 3518 SD 9.1 1.4” (6 were 0.7”)

32.5 gr A2230
3508, 3525, 3504, 3506, 3496
3532, 3510, 3522, 3513, 3513 SD 10.7 1.5” (7 were 1”)

 

[rlsmith1]

Anyone have a starting point for 75gr VMAX's? I'm mostly curious where I should set my BTO to have the best chance at success. I do have 65gr and 87gr flavors as well but would prefer to stick with the 75's as they will let me use up the pile of TAC I have sitting around.

@db2000 if there are pages of 6 ARC load data on here I'm missing it.

Thanks!

 

[Dogtown]

Running some experiments with powders that aren't LVR out of a 16" Proof carbon.

103 ELD-X
Starline Brass
GM205MAR
2.245" COAL

26.5gr N540
25.8gr TAC
Both shooting around 2350fps with low SD/ES

 

[db2000]

Anyone have a starting point for 75gr VMAX's? I'm mostly curious where I should set my BTO to have the best chance at success. I do have 65gr and 87gr flavors as well but would prefer to stick with the 75's as they will let me use up the pile of TAC I have sitting around.

@db2000 if there are pages of 6 ARC load data on here I'm missing it.

Thanks!

It might be in a different 6 ARC thread but they’re around.

 

[rlsmith1]

It might be in a different 6 ARC thread but they’re around.

If you stumble across it tag ya boi please

 

[AKGuide]

26” McGowan 1:7” 0.086” gas port, Odinworks adjustable gas block, JP BCG

Using 0.350” insert
Hornady comparator’s headspace 1.183”
Sized 6.5 Grendel Virgin Starline brass headspace 1.187”
Fired cases headspace 1.191”

1.720” CBTO Lands contact 100 TGK & 107 SMK
100 TGK~2.297” OAL
107 SMK~2.287” OAL

17FEB2021 34F, 99%H, 29.85inhg
Virgin Starline 1.480”, Rem 7 1/2, [email protected], 107 [email protected]” CBTO for 0.010” jump
2721avg, sd5; 0.85” 5-shot group

21MAR2021 27F, 86%H, 30.09inhg
Virgin Starline 1.480”, Rem 7 1/2, [email protected], 100 [email protected]” CBTO for 0.010” jump
29.0-2717avg, sd22
H4895 w/ GM205MAR 25.8-2718avg, sd4