Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 175gr | Speer Grand Slam bullet and 95 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 ReloadSwiss RS 70.
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.
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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 2700 | <<locked>> | 86% | 57,363 psi | 88% | 2635 fps | 99.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 58,610 psi | 90% | 2730 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 55,941 psi | 86% | 2602 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,971 psi | 88% | 2720 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,580 psi | 89% | 2825 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 55,332 psi | 85% | 2631 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,522 psi | 89% | 2769 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 98% | 55,013 psi | 85% | 2766 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,985 psi | 58% | 2510 fps | 97.6% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,624 psi | 89% | 2762 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,521 psi | 87% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,550 psi | 87% | 2674 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,450 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,100 psi | 85% | 2736 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,840 psi | 87% | 2756 fps | 99.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 58,102 psi | 89% | 2815 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,216 psi | 85% | 2736 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,892 psi | 74% | 2690 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,477 psi | 85% | 2828 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,493 psi | 88% | 2730 fps | 95.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,243 psi | 82% | 2746 fps | 99% |
| Bofors RP3 | <<locked>> | 84% | 57,305 psi | 88% | 2667 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,700 psi | 67% | 2618 fps | 96.8% |
| Bofors RP5ᴾ | <<locked>> | 100% | 58,102 psi | 89% | 2815 fps | 99.6% |
| Bofors RP7 | <<locked>> | 88% | 56,507 psi | 87% | 2667 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,005 psi | 68% | 2572 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 84% | 57,682 psi | 89% | 2694 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 56,159 psi | 86% | 2733 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 90% | 56,565 psi | 87% | 2707 fps | 99.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,288 psi | 84% | 2697 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,769 psi | 89% | 2746 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,812 psi | 89% | 2690 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,760 psi | 72% | 2733 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 88% | 55,056 psi | 85% | 2753 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,811 psi | 57% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,523 psi | 90% | 2667 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 58,073 psi | 89% | 2631 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,957 psi | 89% | 2654 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,391 psi | 87% | 2641 fps | 99.9% |
| IMR 4350 | <<locked>> | 92% | 57,522 psi | 89% | 2700 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 58,189 psi | 90% | 2694 fps | 99.9% |
| IMR 4831 | <<locked>> | 96% | 58,073 psi | 89% | 2720 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 58,001 psi | 89% | 2697 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,652 psi | 87% | 2697 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 98% | 56,797 psi | 87% | 2805 fps | 98.7% |
| Lovex S062 | <<locked>> | 84% | 58,566 psi | 90% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 58,378 psi | 90% | 2687 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 56,376 psi | 87% | 2684 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,907 psi | 75% | 2595 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 55,869 psi | 86% | 2661 fps | 100% |
| Norma 204 | <<locked>> | 92% | 58,595 psi | 90% | 2756 fps | 99.4% |
| Norma MRP | <<locked>> | 98% | 57,914 psi | 89% | 2841 fps | 100% |
| Norma URP | <<locked>> | 90% | 55,376 psi | 85% | 2703 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,782 psi | 87% | 2690 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,521 psi | 87% | 2812 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 57,667 psi | 89% | 2756 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 57,522 psi | 89% | 2792 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 58% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,377 psi | 88% | 2680 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 58,566 psi | 90% | 2776 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,637 psi | 87% | 2740 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,781 psi | 84% | 2766 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,804 psi | 72% | 2730 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 57,217 psi | 88% | 2618 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,493 psi | 88% | 2667 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,347 psi | 85% | 2684 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 96% | 56,333 psi | 87% | 2743 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 88% | 56,507 psi | 87% | 2667 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 58,378 psi | 90% | 2687 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 58,566 psi | 90% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,376 psi | 87% | 2684 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,347 psi | 85% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,001 psi | 89% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 58,001 psi | 89% | 2644 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,854 psi | 86% | 2740 fps | 99.4% |
| Somchem S355 | <<locked>> | 86% | 57,421 psi | 88% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,232 psi | 88% | 2684 fps | 98% |
| Somchem S365 | <<locked>> | 94% | 58,682 psi | 90% | 2746 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,753 psi | 87% | 2717 fps | 99.7% |
| Unknown powder | <<locked>> | 88% | 55,869 psi | 86% | 2707 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 57,174 psi | 88% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 57,798 psi | 89% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,087 psi | 88% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,434 psi | 85% | 2598 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,362 psi | 87% | 2677 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,041 psi | 83% | 2667 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 56,449 psi | 87% | 2608 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 56,594 psi | 87% | 2720 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,914 psi | 89% | 2766 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 58,566 psi | 90% | 2844 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,835 psi | 77% | 2697 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,811 psi | 87% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,159 psi | 86% | 2733 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,082 psi | 79% | 2812 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,926 psi | 85% | 2687 fps | 99.1% |
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 2700 | <<locked>> | 80% | 47,224 psi | 73% | 2484 fps | 98.6% |
| Accurate 3100 | <<locked>> | 80% | 29,892 psi | 46% | 2221 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 52,489 psi | 81% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,451 psi | 62% | 2461 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 96% | 50,082 psi | 77% | 2707 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 48,950 psi | 75% | 2539 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,870 psi | 60% | 2444 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 90% | 42,163 psi | 65% | 2539 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 33,475 psi | 52% | 2398 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 36,666 psi | 56% | 2395 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,995 psi | 77% | 2566 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,055 psi | 82% | 2625 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,160 psi | 60% | 2467 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,730 psi | 69% | 2582 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,318 psi | 56% | 2388 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,492 psi | 56% | 2434 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,892 psi | 44% | 2251 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,747 psi | 44% | 2260 fps | 95.3% |
| Alliant Reloder-26 | 51 gr | 80% | 30,937 psi | 48% | 2362 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 54,244 psi | 83% | 2677 fps | 95.2% |
| Bofors RP15 | <<locked>> | 88% | 36,260 psi | 56% | 2428 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 50,299 psi | 77% | 2572 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 38,261 psi | 59% | 2507 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 36,492 psi | 56% | 2434 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 44,193 psi | 68% | 2470 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 96% | 38,754 psi | 60% | 2464 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 50,720 psi | 78% | 2592 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 46,021 psi | 71% | 2572 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 41,510 psi | 64% | 2451 fps | 97% |
| Hodgdon H4831 | <<locked>> | 94% | 44,976 psi | 69% | 2546 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,222 psi | 68% | 2530 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,811 psi | 57% | 2365 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,114 psi | 56% | 2497 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 41,249 psi | 63% | 2523 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 42% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,779 psi | 80% | 2575 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,607 psi | 84% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,283 psi | 74% | 2516 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,123 psi | 73% | 2497 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 39,755 psi | 61% | 2405 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,556 psi | 70% | 2493 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 35,244 psi | 54% | 2339 fps | 98.9% |
| IMR 4895 | <<locked>> | 80% | 54,447 psi | 84% | 2651 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,266 psi | 68% | 2493 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 90% | 43,236 psi | 67% | 2575 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 51,837 psi | 80% | 2562 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,062 psi | 66% | 2448 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 41,263 psi | 64% | 2434 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 29,385 psi | 45% | 2208 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 52,417 psi | 81% | 2612 fps | 100% |
| Norma 204 | <<locked>> | 80% | 39,262 psi | 60% | 2431 fps | 95.8% |
| Norma MRP | 50.7 gr | 82% | 33,330 psi | 51% | 2388 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 40,059 psi | 62% | 2451 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 80% | 52,997 psi | 82% | 2638 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 42,090 psi | 65% | 2566 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 38,928 psi | 60% | 2448 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 88% | 36,550 psi | 56% | 2431 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 43% | 1499 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,343 psi | 77% | 2575 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,529 psi | 73% | 2625 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,277 psi | 62% | 2480 fps | 99.5% |
| ReloadSwiss RS 70 | 50.5 gr | 80% | 38,754 psi | 60% | 2490 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,054 psi | 51% | 2415 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 53,650 psi | 83% | 2569 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,471 psi | 73% | 2526 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 40,451 psi | 62% | 2428 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 37,884 psi | 58% | 2425 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 44,193 psi | 68% | 2470 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,062 psi | 66% | 2448 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 51,837 psi | 80% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,263 psi | 63% | 2434 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,718 psi | 75% | 2582 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,501 psi | 75% | 2425 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,018 psi | 65% | 2398 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,536 psi | 58% | 2421 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 47,630 psi | 73% | 2523 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,903 psi | 68% | 2470 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,738 psi | 57% | 2415 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,736 psi | 52% | 2306 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 43,004 psi | 66% | 2503 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 53,911 psi | 83% | 2480 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 54,404 psi | 84% | 2533 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,519 psi | 82% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,075 psi | 63% | 2385 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,134 psi | 66% | 2474 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 34,389 psi | 53% | 2316 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 53,026 psi | 82% | 2562 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 43,801 psi | 67% | 2520 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 32,184 psi | 50% | 2320 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 92% | 44,701 psi | 69% | 2618 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 43,613 psi | 67% | 2589 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,321 psi | 62% | 2418 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,021 psi | 71% | 2572 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,556 psi | 39% | 2244 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,464 psi | 59% | 2408 fps | 95.7% |
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 95 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 175gr | Speer Grand Slam. Vihtavuori N560 delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,844 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 175.0 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 2225 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, ReloadSwiss RS 70 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 175gr | Speer Grand Slam 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.