Absolute Hammer load data

[TimLee]

7mm-08 Rem
1:9.5 20"
119g AH
45g TAC
Fed 210m
Hornady Brass
COAL 2.890
3050 FPS

 

[jacob_strass]

Got some .257 117 grain load data:
25 creedmoor 1-7" twist 26" preferred prefit on a bighorn origin
Primer was CCI 450 SRP magnum
Virgin Peterson 25 creedmoor brass
COAL on velocity testing was 2.761" have since settled on 2.755". 2.810" is touching the lands in my chamber.
Only tested Staball 6.5 so far, have some IMR 4451 I might try yet.
43 - 2948
43.3 - 2945
43.6 - 2943
43.9 - 2972
44.2 - 3026
44.5 - 3030
44.8 - 3033
45.1 - 3082 slight ejector
45.4 - 3095
45.7 - 3115
46 - 3161
46.3 - 3154 slight ejector mark here to the end
46.6 - 3168
46.9 - 3173
47.2 - 3205
47.5 - 3215
Going to revisit some of the upper end charges once I get fireformed brass. Looks like my brass is a bit undersized for the chamber and I'm thinking that might be causing some of the ejector marks. Settled on 46 grains at 2.755" coal, average of 3149 SD 9.5 ES 25, shoots about .5 MOA. Might tune a bit more when the weather gets better. This is also the first shots down this barrel. So this could also go up when I get more rounds down the tube.

 

[Peter Morton]

I found some Staball 6.5. I want to use it for 280AI and the AH 140G. Do you guys shoot a single round until you find pressure, back off that, and then shoot groups of different seating depths? With the Abs Hammers, seating depth is not a big factor, as I understand it. So, I'm curious as to a best approach. I'm used to finding the best group in a ladder test and then tweaking the seating depth. These days, with components being so dear, I'd like to take the most efficient approach!

 

[ButterBean]

I found some Staball 6.5. I want to use it for 280AI and the AH 140G. Do you guys shoot a single round until you find pressure, back off that, and then shoot groups of different seating depths? With the Abs Hammers, seating depth is not a big factor, as I understand it. So, I'm curious as to a best approach. I'm used to finding the best group in a ladder test and then tweaking the seating depth. These days, with components being so dear, I'd like to take the most efficient approach!

shoot a single round until you find pressure,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This is correct, You most likely will not need to adjust your seating depth

 

[GLTaylor]

Look in the Absolute Hammer load data thread. Find your bullet and powder range. Go up in one grain increments until you get close to max charge, then go up in 1/2 gr increments til you find pressure. Drop back one grain below pressure. Shoot groups. Fine tune your charge wt. Probably won't have to mess with seating depth.

 

[dougduey]

I found some Staball 6.5. I want to use it for 280AI and the AH 140G. Do you guys shoot a single round until you find pressure, back off that, and then shoot groups of different seating depths? With the Abs Hammers, seating depth is not a big factor, as I understand it. So, I'm curious as to a best approach. I'm used to finding the best group in a ladder test and then tweaking the seating depth. These days, with components being so dear, I'd like to take the most efficient approach!

StaBall works really well with the 120 HH in the 280 AI. 3564 fps ain't too shabby.

 

[Peter Morton]

Thank you, gentlemen!

 

[Longtine88]

7MM SAUM
22" Proof Senderol 1:8 Twist
ADG New Brass
RL26 67.5 Grains 3,304 FPS avg ES 7
Hunter Hammer 143 Grain
0.106" off Lands

66.0 3215'
67.0 3265'
67.5 3306 3306 3299 3300 3302

0.140 MOA @ 100 Yards
0.205 MOA @ 200 Yards


Can Someone move this one to the Hunter Hammer Data Page please!!!

 

[Longtine88]

6.5 MAX
26" Proof Sendero 1:8 Twist
Sherman Brass
RL26 69.5 Grains 3,508 FPS avg ES 4
123 Absolute Hammer
2.795" COAL

68.0 3422
68.5 3454
69.0 3483
69.5 3510 3506 3505 3509 3508

0.22 MOA @ 100 Yards
0.29 MOA @ 200 Yards

 

[stevejfarms]

Finally got out and shot today.
257 Weatherby Vanguard 2, 26" 1:10, Fed 215, 3.173 COAL, Nosler brass 67 gr. Shock Hammer
IMR 4350
70 3776
71 3918
72 4024
73 4074
74 4119
75 4266
Didn't really find the limit but this group was all over the place , mainly vertically, don't think I'll waste any more components.

IMR 4064
65 4055
66 error
67 4174
68 4224
69 4316
70 4425 heavy bolt, time to quit, this grouped about 1 1/8" gonna load 5 each @ 68 & 68.5 and see what I've got.

 

[stevejfarms]

26 nosler m48 26" 1:8, Nosler brass WLRM primer COAL 3.395 H1000 109 absolute
80 3525
81 3613
82 3624
83 3648
84 3701
85 3750
86 3770 Slightly heavy bolt
87 3832. "
The faster this got the tighter the group, Gonna load 5 @ 85 & 85.5 and see how it shoots. All had ejector swipes, but so has every other round I've fired in this rifle.

 

[Mike D Texas]

26 nosler m48 26" 1:8, Nosler brass WLRM primer COAL 3.395 H1000
80 3525
81 3613
82 3624
83 3648
84 3701
85 3750
86 3770 Slightly heavy bolt
87 3832. "
The faster this got the tighter the group, Gonna load 5 @ 85 & 85.5 and see how it shoots. All had ejector swipes, but so has every other round I've fired in this rifle.

Which bullet for this one?

 

[Shane Lindsey]

26 nosler m48 26" 1:8, Nosler brass WLRM primer COAL 3.395 H1000
80 3525
81 3613
82 3624
83 3648
84 3701
85 3750
86 3770 Slightly heavy bolt
87 3832. "
The faster this got the tighter the group, Gonna load 5 @ 85 & 85.5 and see how it shoots. All had ejector swipes, but so has every other round I've fired in this rifle.

Do you get swipe without firing? I do on a few rifles.

Test by chambering and then unloading without firing it. I get swipe on virgin cases on some. I think this is from a short chamber, tight ejector spring, un-polished ejector pin, yada, yada....

 

[stevejfarms]

Which bullet for this one?

109 absolute, fixed it above