Dddaaaammmnn. Again!
Good for you!
Good for you!
Hammer Hunter Load Data, (See page 1, Post 8)
- Thread starter GLTaylor
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Lrreloader
Well-Known Member
What kind of energy is that lightning bolt kicking of at that distance?
I never look at energy numbers, I concentrate on impact velocity but here is the StrelokPro calculation and why I don't put much faith in energy numbers
QuietTexan
Well-Known Member
So basically your velocity at 400 yards is like shooting an animal with a 30-30 pressed against the ribs. I bet it'll do the job.
I just ordered the 124s, looks like Steve will be getting an order for 110s later today....
I just ordered the 124s, looks like Steve will be getting an order for 110s later today....
ShoNuff, The FPS@ 400 is the same as the 175 SMK in the 308 that we shot in the military at the muzzle
My Sherman 7Max arrived last week and I'm finally getting a start on load development. It's got a 26" Proof Research Sendero barrel, 1in 8.44 twist, and a suppressor. Incidentally, I've been testing loads with and without the suppressor and not seeing any differences in speed or pressure, but POI usually changes. Using ADG brass and Fed 215 primers. Coal on this load was 3.05 Powder is H4831SC. Shooting the 131 grain hammer hunter, worked up to a slightly compressed load of 72.0 grains with a slight ejector mark and moderate bolt lift. It's running 3,541 FPS with that load. I'm going to back it down a bit and start playing with seating depth (make them jump a little more). Groups are sub moa but I know its capable of better.
I've also got some 120 Hammer hunters to try as well, will post results when I have them.
I've also got some 120 Hammer hunters to try as well, will post results when I have them.
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Just went out and ran the 120 Hammers in the 7 Max. Moved the Coal down to 2.95, everything else the same as the post above,
H4831SC. Started out with a slightly compressed load at 72.0 grains, three rounds averaged 3619 FPS, SD of 9.2. No signs of pressure.
Moved on to H4350. Started out at 63.0 grains for 3,450 FPS, moved up a grain at a time to find pressure. 67.0 was 3,624 FPS, no pressure. 68.0 was 3,706 with a stiff bolt and ejector mark. 69.0 was 3,732 FPS and the primer blew out.
H4831SC. Started out with a slightly compressed load at 72.0 grains, three rounds averaged 3619 FPS, SD of 9.2. No signs of pressure.
Moved on to H4350. Started out at 63.0 grains for 3,450 FPS, moved up a grain at a time to find pressure. 67.0 was 3,624 FPS, no pressure. 68.0 was 3,706 with a stiff bolt and ejector mark. 69.0 was 3,732 FPS and the primer blew out.
Thanks for setting the pace. (and all the help)
OK folks. Everybody went nuts this week. All the new data I could use?find is posted.
If I missed yours, send it to me.
If I missed yours, send it to me.
I did not see this on the updated document. Appreciate your efforts in compiling this data. It is a great resource for all us hammer nuts.
Now that I know where pressure is at on the 7 Max I worked a little on accuracy this morning.
For the 131 HH, I set the COAL to 2.945 and found the sweet spot pretty quickly. 70.7 grains of H4831SC produced 3,545 FPS and the group at 200 yards was less than 1/4 MOA. No signs of pressure with change to seating depth. I should add that all of my load data includes a Lee FCD.
For the 131 HH, I set the COAL to 2.945 and found the sweet spot pretty quickly. 70.7 grains of H4831SC produced 3,545 FPS and the group at 200 yards was less than 1/4 MOA. No signs of pressure with change to seating depth. I should add that all of my load data includes a Lee FCD.
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I had a limited supply of the 120 HH to test in the 7 Max, (Steve was generous enough to throw them in the box when he knew what I was up to). Yesterday's testing used up most of them, but I had a few left this morning to play with. The OAL gauge on these showed 3.078 so I moved the seating depth out from 2.950 to 3.028, giving a 0.05 jump and hoping I could squeeze a little more powder in. It's kind of close tolerances to get the bullet seated decent with these little pills, but it loaded up ok. The results weren't as good as the shorter loading from yesterday at 2.950. I had 3 bullets left, loaded 72.0, 72.5 and 73.0, found pressure immediately, with a stiff bolt and ejector mark for 72.0 grains for 3610 FPS , and a little more of the same at 72.5 for 3629 FPS, so I ended there. Yesterday's load at 2.950 COAL produced 3619 FPS with no signs of pressure, might be worth more testing. Temps have been the same the last couple days, mid 80's, high humidity. The powder is as stable as it gets. Seems like seating depth is the key.
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Lrreloader
Well-Known Member
I'm going to finish this ladder test now that I know the double ejector in my CA are showing false pressure, will stick to primer flattening amd bolt lift.
I have 70.0 70.5 71.0 71.5 72 yet to shoot.
Will update...
For now I have H1000 data
33 nosler, 26" carbon barrel 1-10 twist, 1x fired nosler brass, amp aztek annealed, shoulder bumped .004" from fired during full length sizing, all standard chamfers on brass. FED 215 primer, 260gr. Hammer hunters, COAL 3.580" 70° temp, elevation 900ft, shot over labradar.
Hodgdon book data for a 265gr and 250gr for reference
265gr. Start 74gr 2627
75gr 2650
76gr. 2675
77gr. 2697
78gr. 2756
78.5gr 2786
79gr. Failed to read
79.5gr
