Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 128gr | IBEX TRD bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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 2015 | <<locked>> | 82% | 56,753 psi | 87% | 2956 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,840 psi | 87% | 2992 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,464 psi | 88% | 3048 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,798 psi | 89% | 3028 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,905 psi | 72% | 2936 fps | 97.1% |
| Accurate 4064 | <<locked>> | 88% | 56,840 psi | 87% | 3041 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,260 psi | 87% | 3123 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 55,564 psi | 85% | 3058 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,362 psi | 87% | 3054 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,754 psi | 89% | 3058 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,680 psi | 86% | 2982 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,288 psi | 85% | 3182 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,942 psi | 88% | 3084 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,450 psi | 88% | 3107 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,623 psi | 87% | 3179 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 58,146 psi | 89% | 3215 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,034 psi | 68% | 2963 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,676 psi | 76% | 3143 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,434 psi | 85% | 3074 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 58,204 psi | 90% | 3104 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,624 psi | 89% | 3071 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,927 psi | 86% | 2989 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,798 psi | 89% | 3091 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 58,711 psi | 90% | 3117 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 96% | 58,349 psi | 90% | 3169 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 94% | 58,537 psi | 90% | 3127 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 84% | 56,159 psi | 86% | 3068 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,869 psi | 87% | 3100 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,767 psi | 86% | 3104 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,259 psi | 85% | 3146 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 56% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,246 psi | 88% | 3071 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,420 psi | 87% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,173 psi | 86% | 3041 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,579 psi | 86% | 3015 fps | 97.8% |
| IMR 4350 | <<locked>> | 98% | 57,783 psi | 89% | 3094 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,825 psi | 86% | 3048 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 56,637 psi | 87% | 3114 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 55,405 psi | 85% | 3084 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,754 psi | 89% | 3058 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,130 psi | 86% | 3038 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,972 psi | 89% | 3031 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,449 psi | 87% | 3041 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,724 psi | 86% | 3045 fps | 98.9% |
| Lovex S070 | <<locked>> | 96% | 56,768 psi | 87% | 3081 fps | 98.2% |
| Norma 201 | <<locked>> | 86% | 58,131 psi | 89% | 3058 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,581 psi | 90% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,724 psi | 87% | 3094 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,984 psi | 85% | 3087 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,414 psi | 76% | 3094 fps | 96.6% |
| Norma URP | <<locked>> | 98% | 58,392 psi | 90% | 3163 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 57,406 psi | 88% | 3117 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,232 psi | 88% | 3159 fps | 98.9% |
| Ramshot TAC | <<locked>> | 84% | 58,233 psi | 90% | 3081 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,030 psi | 89% | 3100 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,479 psi | 90% | 3054 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 57% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 58,726 psi | 90% | 3094 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,175 psi | 89% | 3179 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,667 psi | 89% | 3212 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,811 psi | 86% | 3143 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 58,595 psi | 90% | 3232 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 55,840 psi | 86% | 2989 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,595 psi | 90% | 3054 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,972 psi | 89% | 3097 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 57,624 psi | 89% | 3071 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,724 psi | 86% | 3045 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,130 psi | 86% | 3038 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,449 psi | 87% | 3041 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,768 psi | 87% | 3081 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,738 psi | 86% | 3100 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,058 psi | 88% | 3061 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,406 psi | 88% | 3081 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,666 psi | 86% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,057 psi | 86% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,927 psi | 86% | 2992 fps | 97.8% |
| Somchem S335 | <<locked>> | 86% | 58,639 psi | 90% | 2982 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,536 psi | 87% | 3048 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,972 psi | 89% | 3091 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 3163 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,779 psi | 81% | 3038 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 82% | 58,436 psi | 90% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 55,941 psi | 86% | 2923 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,349 psi | 90% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 58,813 psi | 90% | 3025 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,753 psi | 86% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,072 psi | 88% | 3097 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 58,508 psi | 90% | 3061 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,276 psi | 88% | 3028 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,391 psi | 87% | 3107 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,139 psi | 76% | 3048 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,087 psi | 88% | 3071 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 58,798 psi | 90% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 58,697 psi | 90% | 3173 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,929 psi | 61% | 2986 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,464 psi | 88% | 3087 fps | 100% |
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 2015 | <<locked>> | 80% | 53,345 psi | 82% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,282 psi | 73% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,693 psi | 83% | 2992 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,892 psi | 74% | 2858 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 41,133 psi | 63% | 2822 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 44,599 psi | 69% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,433 psi | 55% | 2713 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,211 psi | 76% | 2949 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 41,916 psi | 64% | 2789 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,126 psi | 79% | 2949 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,170 psi | 80% | 2933 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,020 psi | 69% | 2986 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,003 psi | 65% | 2815 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,918 psi | 69% | 2884 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,853 psi | 54% | 2713 fps | 95.4% |
| Alliant Reloder-17 | 50.5 gr | 80% | 36,695 psi | 56% | 2792 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,908 psi | 48% | 2625 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 37,898 psi | 58% | 2877 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,602 psi | 75% | 2953 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 42,235 psi | 65% | 2828 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 47,935 psi | 74% | 2900 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,678 psi | 81% | 2936 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,618 psi | 78% | 2979 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,830 psi | 66% | 2828 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 88% | 45,223 psi | 70% | 2933 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 48,718 psi | 75% | 2953 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,705 psi | 76% | 2959 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,400 psi | 47% | 2556 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,977 psi | 71% | 2936 fps | 99.7% |
| Hodgdon Superformance | 60 gr | 90% | 47,979 psi | 74% | 3012 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 42% | 1699 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,616 psi | 73% | 2907 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 49,821 psi | 77% | 2953 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,048 psi | 68% | 2825 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,369 psi | 71% | 2844 fps | 95.9% |
| IMR 4350 | <<locked>> | 92% | 48,196 psi | 74% | 2927 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,874 psi | 67% | 2822 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 34,171 psi | 53% | 2664 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 46,050 psi | 71% | 2917 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 51,126 psi | 79% | 2949 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,255 psi | 76% | 2930 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,617 psi | 75% | 2874 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 44,396 psi | 68% | 2835 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 38,957 psi | 60% | 2717 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 44,541 psi | 69% | 2858 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 48,631 psi | 75% | 2904 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 48,689 psi | 75% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,324 psi | 68% | 2874 fps | 99% |
| Norma 204 | <<locked>> | 94% | 51,634 psi | 79% | 3028 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 46,166 psi | 71% | 3028 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 35,302 psi | 54% | 2707 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 43,903 psi | 68% | 2884 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 41,408 psi | 64% | 2858 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 51,198 psi | 79% | 2963 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,966 psi | 78% | 2982 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 55,172 psi | 85% | 3005 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 42% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,728 psi | 66% | 2802 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,776 psi | 74% | 2999 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,885 psi | 60% | 2861 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 37,246 psi | 57% | 2782 fps | 95.9% |
| ReloadSwiss RS 70 | 55.1 gr | 86% | 39,349 psi | 61% | 2844 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 52,794 psi | 81% | 2943 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,340 psi | 71% | 2851 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 39,943 psi | 61% | 2772 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 47,935 psi | 74% | 2900 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,957 psi | 60% | 2717 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,255 psi | 76% | 2930 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,396 psi | 68% | 2835 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 44,541 psi | 69% | 2858 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,437 psi | 62% | 2815 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,937 psi | 77% | 2940 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,674 psi | 73% | 2917 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,327 psi | 76% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,495 psi | 64% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,395 psi | 67% | 2769 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,240 psi | 76% | 2844 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,516 psi | 76% | 2933 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 40,480 psi | 62% | 2776 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 29,878 psi | 46% | 2602 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 46,528 psi | 72% | 2927 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 55,230 psi | 85% | 2897 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,632 psi | 76% | 2828 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,905 psi | 71% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,195 psi | 71% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,464 psi | 59% | 2700 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 36,637 psi | 56% | 2707 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 51,343 psi | 79% | 2946 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,773 psi | 69% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,303 psi | 56% | 2710 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 33,562 psi | 52% | 2710 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,055 psi | 52% | 2621 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 51,677 psi | 80% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 45,440 psi | 70% | 2940 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,096 psi | 48% | 2713 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,326 psi | 73% | 2920 fps | 99.7% |
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 96 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 128gr | IBEX TRD. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,903 fps to 3,232 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 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 128.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 128gr | IBEX TRD 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.