6 ARC vs 6.5 Grendel Pistol

[Bee3440]

Got some velocity data on this pistol the other day. 20 rounds of factory Hornady 108 grs gave an average 2430 FPS. Also got 3 of 5 to connect on a silhouette at 500 yds.

 

[SG4247]

Here is my 6AR pistol.
Have several records with it.
It bangs 10” gongs at 547 yards and knocks down 52lb steel rams as well.

 

[skyrep]

This is breaking in my 12" 6mm ARC Pistol.

 

[Bee3440]

Got out and shot some handloads today, got some decent results and some horrendous results.

87 gr VMAX with CFE 223
30.1 GR FPS: 2574, 2598, 2600 AVG: 2590 ES: 26 SD: 11
30.4 GR FPS: 2629, 2630, 2641 AVG: 2633 ES: 12 SD: 5
30.7 GR FPS: 2681, 2692, 2680 AVG: 2684 ES: 12 SD: 5
31.0 GR FPS: 2686, 2695, 2705 AVG: 2695 ES: 19 SD: 7

85 gr GameKing with ACCURATE 2520
29.6 GR FPS: 2574, 2598, 2600 AVG: 2590 ES: 26 SD: 11
29.9 GR FPS: 2588, 2613, 2650 AVG: 2617 ES: 62 SD: 25
30.2 GR FPS: 2589, 2606, 2677 AVG: 2624 ES: 88 SD: 38
30.5 GR FPS: 2609, 2647, 2656 AVG: 2637 ES: 47 SD: 20

 

[Bee3440]

Got out and shot some handloads today, got some decent results and some horrendous results.

87 gr VMAX with CFE 223
30.1 GR FPS: 2574, 2598, 2600 AVG: 2590 ES: 26 SD: 11
30.4 GR FPS: 2629, 2630, 2641 AVG: 2633 ES: 12 SD: 5
30.7 GR FPS: 2681, 2692, 2680 AVG: 2684 ES: 12 SD: 5
31.0 GR FPS: 2686, 2695, 2705 AVG: 2695 ES: 19 SD: 7

85 gr GameKing with ACCURATE 2520
29.6 GR FPS: 2574, 2598, 2600 AVG: 2590 ES: 26 SD: 11
29.9 GR FPS: 2588, 2613, 2650 AVG: 2617 ES: 62 SD: 25
30.2 GR FPS: 2589, 2606, 2677 AVG: 2624 ES: 88 SD: 38
30.5 GR FPS: 2609, 2647, 2656 AVG: 2637 ES: 47 SD: 20

 

[Badbrad1013]

Have you tried any other powders?

I just built a 12" , 1:7.5 twist. It doesn't like any factory ammo(which sucks)...the 105 or 108s.

 

[Badbrad1013]

87vmax behind 27gr of 4166 was better than all factory.