184-f 7 SAUM Load Development. Advice Wanted

[Pudgy]

I couldn't find any load data for the 184-f 7Saum so decided to do my own work. This is posted for informational purposes and may not work for you. Please work up your own loads carefully.

Please give your suggestions what load's you would explore. Like 2 from each of the 3 powders.

Pictures and data included.

Couldn't find 180 hybrids, but lots of 184-f. Not much load data for the 184 so I started playing with load development. Here's what I have so far.

Rifle. SAAMI chamber / Defiance anti x SA / proof elevation MTR stock, TT Diamond, Wyatt's box, TI pro brake , NX8 4x32- 22" 1:8 TW proof. 800ish rounds shot.

Brass ADG started 3x ended 4x, amp annealed, Henderson trimmed, bumped .0015 SAC Modular Die, 2815 mandrel.

Bullet 184-f. COAL 2,9640

Radar: Andiscan a2 (within 3-4fps Labradar and magneto speed)

Powder dispenser: SuperTrickler. Loaded +/- .02

Powders: / charge.

H4831sc 1 shot 57 grain 2703 - 3 at 57.75
2730 ish. 1" group clickers, heavy bolt, extractor marks. Didn't explore further.

N560 - 34 degrees
57-59.75 / 2646 to 2785 Pressure at 59.25 heavy pressure 59.75.

N565 41-degrees
61-62.75 / 2717 to 2888. Light clicker 62.5. Extractor mark at 62.75.

H1000 45-degrees.
60.1-63 / 2724 - 2805 light clicker 62.77 moderate clicker 63.

I was up and down with young boys throughout the test, so multiple cold bore shots and constant mounting.

H1000 groups were impacted by loose brake I didn't notice until 5th round of N565. So take that into account.

Interesting, bullets across the powders seemed to have same POI at a given velocity.

Seems like the best balance of node/SD/ES/accuracy was between 2695-2750.

thoughts, comments, and suggestions welcome.

 

[Pudgy]

I couldn't find any load data for the 184-f 7Saum so decided to do my own work. This is posted for informational purposes and may not work for you. Please work up your own loads carefully.

Please give your suggestions what load's you would explore. Like 2 from each of the 3 powders.

Pictures and data included.

Couldn't find 180 hybrids, but lots of 184-f. Not much load data for the 184 so I started playing with load development. Here's what I have so far.

Rifle. SAAMI chamber / Defiance anti x SA / proof elevation MTR stock, TT Diamond, Wyatt's box, TI pro brake , NX8 4x32- 22" 1:8 TW proof. 800ish rounds shot.

Brass ADG started 3x ended 4x, amp annealed, Henderson trimmed, bumped .0015 SAC Modular Die, 2815 mandrel.

Bullet 184-f. COAL 2,9640

Radar: Andiscan a2 (within 3-4fps Labradar and magneto speed)

Powder dispenser: SuperTrickler. Loaded +/- .02

Powders: / charge.

H4831sc 1 shot 57 grain 2703 - 3 at 57.75
2730 ish. 1" group clickers, heavy bolt, extractor marks. Didn't explore further.

N560 - 34 degrees
57-59.75 / 2646 to 2785 Pressure at 59.25 heavy pressure 59.75.

N565 41-degrees
61-62.75 / 2717 to 2888. Light clicker 62.5. Extractor mark at 62.75.

H1000 45-degrees.
60.1-63 / 2724 - 2805 light clicker 62.77 moderate clicker 63.

I was up and down with young boys throughout the test, so multiple cold bore shots and constant mounting.

H1000 groups were impacted by loose brake I didn't notice until 5th round of N565. So take that into account.

Interesting, bullets across the powders seemed to have same POI at a given velocity.

Seems like the best balance of node/SD/ES/accuracy was between 2695-2750.

thoughts, comments, and suggestions welcome.

Doesn't seem to be much interest it the 184-f, but I thought I'd post my results.
Went with 59.95 H1000. I shot at 385 yards today. Winds were gusting 5-25 quartering from my left. Only shot 3. Drop/vertical was good but I was off .25 MOA right. (Pic 1)
Went shot 4 confirmed off right (pic 2).
Adjusted.25 - shot 9 (pic 3)

Happy with the load so far. 20 shot SD 4.8 /es 13. 2728 average. Going to take it out to 1k and see if it holds up.

 

[Bob Wright]

Doesn't seem to be much interest it the 184-f, but I thought I'd post my results.
Went with 59.95 H1000. I shot at 385 yards today. Winds were gusting 5-25 quartering from my left. Only shot 3. Drop/vertical was good but I was off .25 MOA right. (Pic 1)
Went shot 4 confirmed off right (pic 2).
Adjusted.25 - shot 9 (pic 3)

Happy with the load so far. 20 shot SD 4.8 /es 13. 2728 average. Going to take it out to 1k and see if it holds up.

I think you figured out that load. Hoping you get good results at 1k.