Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 162gr | RWS ID Classic bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 57,174 psi | 88% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 58,320 psi | 90% | 2766 fps | 99.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,536 psi | 87% | 2812 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 57,624 psi | 89% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,755 psi | 90% | 2858 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 58,726 psi | 90% | 2959 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 86% | 57,377 psi | 88% | 2772 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,622 psi | 86% | 2848 fps | 98.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,188 psi | 88% | 2904 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,666 psi | 56% | 2566 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,203 psi | 88% | 2900 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 58,450 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 58,537 psi | 90% | 2815 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,492 psi | 85% | 2854 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,000 psi | 88% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,798 psi | 90% | 2894 fps | 99.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 2900 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,272 psi | 82% | 2825 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,238 psi | 71% | 2766 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,421 psi | 88% | 2969 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 2822 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 55,811 psi | 86% | 2762 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 2900 fps | 99.1% |
| Bofors RP7 | <<locked>> | 90% | 58,581 psi | 90% | 2805 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,774 psi | 70% | 2700 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 55,898 psi | 86% | 2782 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,898 psi | 88% | 2854 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 56,420 psi | 87% | 2812 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 98% | 57,217 psi | 88% | 2848 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,985 psi | 86% | 2828 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,086 psi | 86% | 2782 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,246 psi | 88% | 2812 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,092 psi | 69% | 2799 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 90% | 57,508 psi | 88% | 2897 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,682 psi | 89% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,826 psi | 87% | 2756 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,883 psi | 86% | 2743 fps | 99.6% |
| IMR 4350 | <<locked>> | 92% | 56,028 psi | 86% | 2789 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,492 psi | 87% | 2779 fps | 99.6% |
| IMR 4831 | <<locked>> | 92% | 55,158 psi | 85% | 2792 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,463 psi | 87% | 2792 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,494 psi | 90% | 2828 fps | 97.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,592 psi | 84% | 2877 fps | 97.8% |
| Lovex S060 | <<locked>> | 82% | 58,088 psi | 89% | 2733 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 57,043 psi | 88% | 2746 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,768 psi | 87% | 2776 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 58,189 psi | 90% | 2818 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,108 psi | 72% | 2671 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 58,392 psi | 90% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,827 psi | 89% | 2802 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,782 psi | 87% | 2841 fps | 98.8% |
| Norma MRP | <<locked>> | 98% | 55,927 psi | 86% | 2927 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 57,145 psi | 88% | 2838 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,172 psi | 85% | 2782 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,911 psi | 84% | 2894 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 92% | 55,782 psi | 86% | 2841 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,153 psi | 76% | 2772 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,347 psi | 57% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,912 psi | 86% | 2769 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,405 psi | 87% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 58,581 psi | 90% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,000 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,991 psi | 69% | 2792 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 55,637 psi | 86% | 2710 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,970 psi | 86% | 2762 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,319 psi | 88% | 2818 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 98% | 58,059 psi | 89% | 2877 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 90% | 58,581 psi | 90% | 2805 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,768 psi | 87% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,043 psi | 88% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 58,189 psi | 90% | 2818 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,551 psi | 89% | 2818 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 58,088 psi | 89% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,608 psi | 87% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,391 psi | 87% | 2730 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,566 psi | 89% | 2874 fps | 99.2% |
| Somchem S335 | <<locked>> | 82% | 58,697 psi | 90% | 2677 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 55,724 psi | 86% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,550 psi | 85% | 2762 fps | 97.1% |
| Somchem S365 | <<locked>> | 94% | 56,652 psi | 87% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,653 psi | 90% | 2851 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 82% | 56,173 psi | 86% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,318 psi | 87% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,058 psi | 88% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,680 psi | 86% | 2782 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,346 psi | 84% | 2776 fps | 99% |
| Vihtavuori N540 | <<locked>> | 84% | 57,812 psi | 89% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 58,233 psi | 90% | 2838 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,724 psi | 86% | 2851 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,115 psi | 86% | 2917 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,066 psi | 74% | 2769 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,172 psi | 85% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,232 psi | 88% | 2861 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,588 psi | 75% | 2894 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,450 psi | 90% | 2795 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,984 psi | 85% | 2792 fps | 98.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 53,664 psi | 83% | 2638 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,039 psi | 79% | 2654 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 30,792 psi | 47% | 2333 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 50,836 psi | 78% | 2644 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,131 psi | 60% | 2533 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 47,747 psi | 73% | 2779 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,645 psi | 73% | 2625 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,321 psi | 62% | 2572 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 46,818 psi | 72% | 2726 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 98% | 34,505 psi | 53% | 2510 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,301 psi | 82% | 2841 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,486 psi | 75% | 2651 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,692 psi | 80% | 2717 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,869 psi | 58% | 2543 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,120 psi | 66% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,914 psi | 61% | 2562 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,292 psi | 62% | 2615 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,862 psi | 43% | 2310 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,575 psi | 49% | 2431 fps | 95.9% |
| Alliant Reloder-26 | 52.5 gr | 80% | 29,704 psi | 46% | 2415 fps | 95.9% |
| Bofors RP15 | <<locked>> | 92% | 39,755 psi | 61% | 2602 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 48,834 psi | 75% | 2661 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,292 psi | 62% | 2615 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,931 psi | 66% | 2546 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 42,888 psi | 66% | 2644 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 49,037 psi | 75% | 2674 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,017 psi | 63% | 2582 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,787 psi | 67% | 2595 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 46,818 psi | 72% | 2674 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,818 psi | 70% | 2657 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,505 psi | 55% | 2438 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,809 psi | 83% | 2762 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,798 psi | 61% | 2677 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,856 psi | 61% | 2592 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,230 psi | 83% | 2723 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,125 psi | 77% | 2654 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,547 psi | 81% | 2690 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 38,464 psi | 59% | 2474 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,280 psi | 68% | 2572 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 37,594 psi | 58% | 2490 fps | 98.9% |
| IMR 4895 | <<locked>> | 80% | 53,055 psi | 82% | 2743 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,730 psi | 70% | 2621 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 44,657 psi | 69% | 2700 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 54,694 psi | 84% | 2687 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,401 psi | 78% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,785 psi | 64% | 2523 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 39,972 psi | 61% | 2507 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 31,995 psi | 49% | 2362 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 54,897 psi | 84% | 2707 fps | 100% |
| Norma 203B | <<locked>> | 80% | 51,068 psi | 79% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,524 psi | 62% | 2556 fps | 95.4% |
| Norma MRP | 53.6 gr | 84% | 34,505 psi | 53% | 2513 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 38,667 psi | 59% | 2526 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,547 psi | 79% | 2730 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,338 psi | 68% | 2707 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,579 psi | 58% | 2516 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 36,738 psi | 57% | 2526 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 43% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,936 psi | 75% | 2657 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,803 psi | 70% | 2710 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,754 psi | 60% | 2549 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,594 psi | 58% | 2559 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,593 psi | 56% | 2598 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 52,272 psi | 80% | 2661 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,963 psi | 71% | 2608 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,541 psi | 69% | 2605 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 39,030 psi | 60% | 2546 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 42,931 psi | 66% | 2546 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,785 psi | 64% | 2523 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,401 psi | 78% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,972 psi | 61% | 2507 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,253 psi | 73% | 2667 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,694 psi | 84% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,050 psi | 72% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,944 psi | 63% | 2474 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,667 psi | 59% | 2539 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 55,274 psi | 85% | 2635 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,238 psi | 71% | 2608 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,675 psi | 75% | 2651 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 35,230 psi | 54% | 2487 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,275 psi | 57% | 2480 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 52,663 psi | 81% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,678 psi | 81% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,077 psi | 68% | 2539 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,205 psi | 62% | 2526 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,680 psi | 56% | 2461 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 50,908 psi | 78% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,508 psi | 61% | 2526 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 30,879 psi | 48% | 2382 fps | 97.5% |
| Vihtavuori N560 | 58.7 gr | 92% | 45,803 psi | 70% | 2736 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 44,773 psi | 69% | 2710 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,160 psi | 60% | 2493 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,017 psi | 63% | 2582 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,671 psi | 38% | 2290 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,679 psi | 84% | 2743 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,030 psi | 60% | 2516 fps | 95.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 97 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 162gr | RWS ID Classic. Alliant Reloder-26 delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,969 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 162.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 162gr | RWS ID Classic they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.