Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 120gr | Barnes X BT bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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% | 56,608 psi | 87% | 3045 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,072 psi | 88% | 3084 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,637 psi | 86% | 3123 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,637 psi | 86% | 3123 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,303 psi | 85% | 3058 fps | 96.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,225 psi | 74% | 3031 fps | 96.8% |
| Accurate 4064 | <<locked>> | 88% | 58,349 psi | 90% | 3146 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,522 psi | 89% | 3225 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 56,405 psi | 87% | 3156 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 57,159 psi | 88% | 3153 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,421 psi | 90% | 3153 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,405 psi | 87% | 3081 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,883 psi | 86% | 3278 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,870 psi | 89% | 3182 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 58,421 psi | 90% | 3205 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,101 psi | 88% | 3268 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,143 psi | 85% | 3255 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,107 psi | 69% | 3058 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,662 psi | 78% | 3238 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,854 psi | 86% | 3163 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 55,622 psi | 86% | 3150 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 58,508 psi | 90% | 3163 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,449 psi | 87% | 3081 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,667 psi | 89% | 3179 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 58,334 psi | 90% | 3136 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,956 psi | 86% | 3156 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 92% | 57,087 psi | 88% | 3232 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 96% | 56,275 psi | 87% | 3176 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 56,956 psi | 88% | 3169 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,290 psi | 88% | 3192 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,477 psi | 85% | 3189 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,796 psi | 86% | 3235 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 56% | 1972 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,782 psi | 86% | 3140 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,869 psi | 86% | 3133 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,941 psi | 86% | 3123 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 58,349 psi | 90% | 3140 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 58,537 psi | 90% | 3186 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 58,624 psi | 90% | 3176 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,607 psi | 84% | 3163 fps | 99.3% |
| IMR 4895 | <<locked>> | 86% | 56,173 psi | 86% | 3182 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 58,421 psi | 90% | 3153 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,174 psi | 88% | 3140 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,595 psi | 90% | 3127 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,348 psi | 88% | 3140 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,637 psi | 87% | 3136 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 57,566 psi | 89% | 3176 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 55,825 psi | 86% | 3107 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,970 psi | 86% | 3104 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,711 psi | 89% | 3192 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,169 psi | 77% | 3186 fps | 96.1% |
| Norma URP | <<locked>> | 96% | 55,448 psi | 85% | 3199 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 58,044 psi | 89% | 3215 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 57,856 psi | 89% | 3251 fps | 98.6% |
| Ramshot TAC | <<locked>> | 84% | 58,624 psi | 90% | 3169 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,508 psi | 90% | 3192 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 57% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,796 psi | 86% | 3127 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,740 psi | 90% | 3274 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,378 psi | 90% | 3310 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,565 psi | 87% | 3238 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,332 psi | 85% | 3258 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 57,014 psi | 88% | 3091 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,275 psi | 87% | 3104 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,680 psi | 86% | 3146 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 58,508 psi | 90% | 3163 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,637 psi | 87% | 3136 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,174 psi | 88% | 3140 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,348 psi | 88% | 3140 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,449 psi | 87% | 3159 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,420 psi | 87% | 3196 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 58,044 psi | 89% | 3159 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,957 psi | 89% | 3173 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,304 psi | 87% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,724 psi | 87% | 3031 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,797 psi | 87% | 3084 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 56,246 psi | 87% | 3035 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,000 psi | 88% | 3140 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 55,593 psi | 86% | 3136 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,551 psi | 89% | 3264 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,693 psi | 83% | 3133 fps | 96.4% |
| Unknown powder | <<locked>> | 94% | 56,188 psi | 86% | 3202 fps | 99% |
| Vihtavuori N130 | <<locked>> | 82% | 58,204 psi | 90% | 3028 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,796 psi | 86% | 3012 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,146 psi | 89% | 3104 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,521 psi | 85% | 3068 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,565 psi | 87% | 3114 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,840 psi | 87% | 3173 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 58,030 psi | 89% | 3159 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 58,581 psi | 90% | 3146 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,508 psi | 89% | 3228 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,038 psi | 77% | 3143 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,856 psi | 89% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,087 psi | 88% | 3232 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,002 psi | 63% | 3077 fps | 99.4% |
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% | 53,287 psi | 82% | 2995 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,485 psi | 73% | 2936 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,098 psi | 80% | 3064 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,098 psi | 80% | 3064 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,895 psi | 80% | 2999 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 42,627 psi | 66% | 2920 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,311 psi | 71% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 36,956 psi | 57% | 2815 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,995 psi | 77% | 3045 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 42,685 psi | 66% | 2877 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,764 psi | 80% | 3045 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 52,953 psi | 81% | 3031 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,803 psi | 70% | 3081 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,047 psi | 66% | 2910 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,832 psi | 71% | 2979 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 82% | 35,926 psi | 55% | 2808 fps | 95.1% |
| Alliant Reloder-17 | 51.5 gr | 80% | 37,507 psi | 58% | 2884 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 32,039 psi | 49% | 2720 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,943 psi | 60% | 2969 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,327 psi | 76% | 3048 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 43,656 psi | 67% | 2930 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 49,153 psi | 76% | 2999 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,272 psi | 82% | 3028 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,459 psi | 78% | 3061 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 54,911 psi | 85% | 3084 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,816 psi | 67% | 2923 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 86% | 47,050 psi | 72% | 3045 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 53,084 psi | 82% | 3117 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,546 psi | 78% | 3054 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,546 psi | 49% | 2651 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,629 psi | 70% | 3012 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 90% | 48,805 psi | 75% | 3104 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 42% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,888 psi | 68% | 2917 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 46,615 psi | 72% | 2982 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,047 psi | 65% | 2858 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,586 psi | 72% | 2923 fps | 95.2% |
| IMR 4350 | <<locked>> | 92% | 48,907 psi | 75% | 3015 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,412 psi | 71% | 2953 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 36,347 psi | 56% | 2785 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 46,934 psi | 72% | 3012 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 51,764 psi | 80% | 3045 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 50,256 psi | 77% | 3028 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,356 psi | 76% | 2966 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 45,469 psi | 70% | 2930 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 42,612 psi | 66% | 2867 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 45,788 psi | 70% | 2956 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 49,719 psi | 77% | 3002 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 49,559 psi | 76% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,266 psi | 70% | 2966 fps | 98.8% |
| Norma MRP | <<locked>> | 98% | 47,050 psi | 72% | 3120 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 36,332 psi | 56% | 2802 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 44,730 psi | 69% | 2976 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 42,351 psi | 65% | 2953 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 51,895 psi | 80% | 3054 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,663 psi | 80% | 3077 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 43% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,772 psi | 67% | 2897 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,443 psi | 75% | 3094 fps | 98.9% |
| ReloadSwiss RS 60 | 51.5 gr | 80% | 39,682 psi | 61% | 2953 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 38,551 psi | 59% | 2881 fps | 95.6% |
| ReloadSwiss RS 70 | 56.3 gr | 86% | 40,321 psi | 62% | 2936 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 54,172 psi | 83% | 3045 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,500 psi | 73% | 2949 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 41,191 psi | 63% | 2871 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 49,153 psi | 76% | 2999 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 42,612 psi | 66% | 2867 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,256 psi | 77% | 3028 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,469 psi | 70% | 2930 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 44,657 psi | 69% | 2936 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,249 psi | 63% | 2907 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,923 psi | 78% | 3035 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,356 psi | 74% | 3005 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,227 psi | 77% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,395 psi | 65% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 47,384 psi | 73% | 2917 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 50,241 psi | 77% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,270 psi | 77% | 3025 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 41,582 psi | 64% | 2871 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 31,227 psi | 48% | 2703 fps | 96.8% |
| Somchem S385 | <<locked>> | 98% | 50,575 psi | 78% | 3074 fps | 95.6% |
| Unknown powder | <<locked>> | 82% | 39,030 psi | 60% | 2858 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 54,853 psi | 84% | 2979 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,355 psi | 73% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,905 psi | 71% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,528 psi | 72% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,882 psi | 55% | 2713 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 80% | 36,825 psi | 57% | 2776 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 54,636 psi | 84% | 3104 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,311 psi | 71% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,521 psi | 58% | 2825 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 34,867 psi | 54% | 2808 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,027 psi | 54% | 2713 fps | 97% |
| Winchester 760 | <<locked>> | 86% | 47,050 psi | 72% | 3045 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 32,445 psi | 50% | 2815 fps | 96% |
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 115 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 120gr | Barnes X BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,310 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,310 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 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 120.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 120gr | Barnes X BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.