Absolute Hammer load data

[dougduey]

Got to the range this morning and have some new info.

172 gr Absolute Hammer in my 7 STW
26" Carbon Six barrel, 1:8 twist
COAL 3.700" (this is my max mag length)
RL26, CCI 250, 3-5x fired Nosler brass Annealed

74.0 3067 fps
75.0 3092
76.0. 3140
76.5. 3165
77.0 3191
77.5. 3206
78.0. 3248
78.5. 3267
79.0 3283. slightly compressed load, stiff bolt lift and very light ejector swipe.

Looks like I'll end up somewhere between 78.0 & 78.5 gr.

I have a load with the 177gr Hammer Hunter that shoots a one hole group at 3026 fps (74.0 gr RL26), so if I don't find accuracy with the Absolute, I'll just stay with the 177.

 

[JMW67]

Got to the range this morning and have some new info.

172 gr Absolute Hammer in my 7 STW
26" Carbon Six barrel, 1:8 twist
COAL 3.700" (this is my max mag length)
RL26, CCI 250, 3-5x fired Nosler brass Annealed

74.0 3067 fps
75.0 3092
76.0. 3140
76.5. 3165
77.0 3191
77.5. 3206
78.0. 3248
78.5. 3267
79.0 3283. slightly compressed load, stiff bolt lift and very light ejector swipe.

Looks like I'll end up somewhere between 78.0 & 78.5 gr.

I have a load with the 177gr Hammer Hunter that shoots a one hole group at 3026 fps (74.0 gr RL26), so if I don't find accuracy with the Absolute, I'll just stay with the 177.

curious do you think you could get anymore out of it with rl-23? or is it pretty much maxed out there

 

[dougduey]

6.5-284 Norma with the 109gr Absolute Hammer
27" Krieger, 1:8 twist
1x fired Nosler brass, body and neck sized
CCI 250, COAL 2.952"
HV100 powder

52.0 3239 fps
53.0 3325
54.0 3409
54.5 3408
55.0 3440
55.5 3447
56.0 3494
56.5 3523
57.0 3558 slight ejector mark, slightly flattened primer
I was hoping to get 3500 fps out of this, so I'm happy. Will see how it groups in the 56-56.5 gr area.

 

[dougduey]

curious do you think you could get anymore out of it with rl-23? or is it pretty much maxed out there

I'm sure I could have gotten more out of it if I could run a longer COAL. This bullet is soooo long and it's seated very deep. I haven't tried RL23

 

[JMW67]

I got ya just curious I put my stw up about 4 years ago and have been thinking about pulling it back out

 

[dougduey]

I got ya just curious I put my stw up about 4 years ago and have been thinking about pulling it back out

RL26 and 23 seem to run neck and neck with velocity in the STW.
Pull it back out and I guarantee you'll wonder why you ever left it.

 

[RogerPA]

First of all, I'd again like to thank GLTaylor for all the work he has been doing building the Absolute Hammer spreadsheet! Experimenting with several different Absolute Hammer calibers, along with powders/bullet weights, etc., has become almost a daily part of my Covid mental health therapy. I can't think of too many better better ways to pass the time away!
Now for today's range report: After working with the .257 Roberts the other day and getting the 90 gr. AH to a comfortable 3450 FPS with H335, I decided to try a ball powder with the .25-06. H414 is listed in the Hodgdon data with a 90 gr. SieHPBT, at a max of 51 gr. @ 3315 FPS. That's not a lot slower than I was able to get the 90 gr. AH running without pressure signs during my first experiment using Hybrid 100V in the .25-06, so that's why I started here.

.25-06 w/90 gr. AH. H414, CCI 200, 24" Christensen, Hornady Brass 2x, .003 neck tension/no crimp, 37F & snowing.
50 gr. 3239 FPS
51 gr. 3255 FPS
52 gr. 3313 FPS
52.5 gr. 3357 FPS
53 gr 3397 FPS
53.5 gr. 3401 FPS
54 gr. 3407 FPS
Absolutely (pun) no pressure signs with any of the above, with outstanding accuracy! (How they all shoot in a 1/2" group at 100 yds., with the MagnetoSpeed hanging off the barrel and 4 grains variation in powder, is beyond me?)
Nonetheless, I know there's room in the case for an additional 5 or 6 grains of this powder before I get to the base of the neck. Next time I'll carefully see where it goes from this point and report back.

 

[ButterBean]

First of all, I'd again like to thank GLTaylor for all the work he has been doing building the Absolute Hammer spreadsheet! Experimenting with several different Absolute Hammer calibers, along with powders/bullet weights, etc., has become almost a daily part of my Covid mental health therapy. I can't think of too many better better ways to pass the time away!
Now for today's range report: After working with the .257 Roberts the other day and getting the 90 gr. AH to a comfortable 3450 FPS with H335, I decided to try a ball powder with the .25-06. H414 is listed in the Hodgdon data with a 90 gr. SieHPBT, at a max of 51 gr. @ 3315 FPS. That's not a lot slower than I was able to get the 90 gr. AH running without pressure signs during my first experiment using Hybrid 100V in the .25-06, so that's why I started here.

.25-06 w/90 gr. AH. H414, CCI 200, 24" Christensen, Hornady Brass 2x, .003 neck tension/no crimp, 37F & snowing.
50 gr. 3239 FPS
51 gr. 3255 FPS
52 gr. 3313 FPS
52.5 gr. 3357 FPS
53 gr 3397 FPS
53.5 gr. 3401 FPS
54 gr. 3407 FPS
Absolutely (pun) no pressure signs with any of the above, with outstanding accuracy! (How they all shoot in a 1/2" group at 100 yds., with the MagnetoSpeed hanging off the barrel and 4 grains variation in powder, is beyond me?)
Nonetheless, I know there's room in the case for an additional 5 or 6 grains of this powder before I get to the base of the neck. Next time I'll carefully see where it goes from this point and report back.

That's awesome, I love 414 and use it a bunch

 

[GLTaylor]

I can't find H414 on my burn rate chart? Do they still make it? Where does it fall?

 

[19 Badger]

H414 is also known as W760

 

[19 Badger]

I had heard that Hodgdon was going to stop selling H414, time will tell.

 

[ButterBean]

I can't find H414 on my burn rate chart? Do they still make it? Where does it fall?

They discontinued 414, W760 is the same thing

 

[RogerPA]

#148 on the attached burn rate chart.

 

[cooperjd]

Just found this thread, and forum really.

I will add my 6.5creedmoor experience

All velocities measured with a magnetospeed

My first outing:
6.5 creedmoor
tikka t3x, 1:8", 24".

1x fired lapua brass, cci-450s and 123gr AH
IMR-4166, the new enduron line to approximate varget's burn rate; approx 15thou jump

36.0gr --2654 fps
37.0gr --2757 fps
38.0gr --2808 fps
39.0gr --2864 fps
40.0gr --2955 fps
41.0gr --3032 fps

My second outing:

41.5gr--3,065
42.0gr--3,121
42.5gr-3,146
42.8gr--3,158; bolt may have been a tad stiff
43.0gr--3,181; bolt definitely stiff, shiny ejector mark
43.3gr--3,233 ---BLEW A PRIMER.

I would be comfortable saying that 42 to 42.3gr or so would be my max for this rifle.