Load Specifications
Load data in caliber .284 Win. with .284 | 120gr | AERO SB.HSD 2.0 ,- smax:15.20 bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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>> | 90% | 57,392 psi | 90% | 3009 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,551 psi | 90% | 3117 fps | 99% |
| Accurate 2460 | <<locked>> | 86% | 55,680 psi | 87% | 3031 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,389 psi | 85% | 3015 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 57,696 psi | 90% | 3097 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 57,711 psi | 90% | 3107 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2999 fps | 97% |
| Accurate LT-30 | <<locked>> | 84% | 57,188 psi | 90% | 2959 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,624 psi | 90% | 2986 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,347 psi | 88% | 3100 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 98% | 57,696 psi | 90% | 3097 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 54,172 psi | 85% | 3028 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,767 psi | 87% | 3058 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 55,753 psi | 87% | 3041 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 57,319 psi | 90% | 3173 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,405 psi | 88% | 3222 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,753 psi | 89% | 3114 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,087 psi | 89% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 57,667 psi | 90% | 3140 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,398 psi | 73% | 3005 fps | 97.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 3176 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,362 psi | 88% | 2949 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,681 psi | 89% | 3117 fps | 98.8% |
| Bofors RP3 | <<locked>> | 98% | 57,363 psi | 90% | 3133 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,592 psi | 86% | 2995 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,549 psi | 85% | 3081 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,869 psi | 89% | 3189 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 86% | 56,652 psi | 89% | 3064 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,143 psi | 85% | 3035 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,274 psi | 87% | 3084 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 92% | 56,840 psi | 89% | 3114 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,583 psi | 67% | 2884 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,825 psi | 87% | 3140 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,432 psi | 54% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,114 psi | 86% | 3064 fps | 99.6% |
| IMR 3031 | <<locked>> | 92% | 56,217 psi | 88% | 3104 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,797 psi | 89% | 3077 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,638 psi | 90% | 3054 fps | 96.3% |
| IMR 4198 | <<locked>> | 86% | 57,450 psi | 90% | 2979 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,956 psi | 89% | 3074 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,512 psi | 70% | 2933 fps | 96.6% |
| IMR 4895 | <<locked>> | 94% | 55,593 psi | 87% | 3120 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 55,767 psi | 87% | 3058 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 55,985 psi | 88% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,695 psi | 87% | 3077 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,492 psi | 89% | 3028 fps | 99.4% |
| Lovex S062 | <<locked>> | 96% | 56,362 psi | 88% | 3074 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,083 psi | 82% | 3002 fps | 96.7% |
| Norma 200 | <<locked>> | 82% | 56,637 psi | 89% | 2986 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,969 psi | 86% | 3045 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 55,332 psi | 87% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,753 psi | 89% | 3127 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 46,673 psi | 73% | 2992 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 54,027 psi | 85% | 3097 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 56,347 psi | 88% | 3064 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,666 psi | 87% | 3091 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,116 psi | 90% | 3058 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,853 psi | 55% | 1913 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,477 psi | 87% | 3045 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,927 psi | 88% | 3064 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,186 psi | 85% | 3153 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,824 psi | 84% | 3186 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,717 psi | 73% | 3018 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,892 psi | 75% | 3041 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 90% | 55,550 psi | 87% | 3028 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,274 psi | 87% | 3038 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 3114 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,083 psi | 82% | 3002 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,695 psi | 87% | 3077 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,362 psi | 88% | 3074 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,288 psi | 87% | 3009 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,956 psi | 89% | 2694 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,433 psi | 85% | 3035 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,506 psi | 87% | 3130 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,708 psi | 86% | 2995 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,418 psi | 85% | 3038 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,955 psi | 86% | 3071 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,145 psi | 90% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 57,130 psi | 90% | 2986 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 57,101 psi | 89% | 3094 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 56,217 psi | 88% | 2989 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,809 psi | 84% | 3031 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 57,653 psi | 90% | 3120 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,495 psi | 65% | 2933 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 88% | 57,087 psi | 89% | 2963 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,130 psi | 90% | 2976 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,462 psi | 85% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,970 psi | 88% | 3028 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 3045 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2999 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 90% | 56,405 psi | 88% | 3058 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 54,186 psi | 85% | 3022 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,341 psi | 76% | 2999 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,546 psi | 79% | 2986 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 55,840 psi | 88% | 3107 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,563 psi | 86% | 3077 fps | 99.6% |
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% | 41,669 psi | 65% | 2759 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,650 psi | 84% | 3051 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 45,426 psi | 71% | 2864 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 33,750 psi | 53% | 2644 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 40,451 psi | 63% | 2805 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 31,937 psi | 50% | 2621 fps | 98.2% |
| Accurate 4350 | <<locked>> | 96% | 40,379 psi | 63% | 2871 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,502 psi | 79% | 2861 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,879 psi | 80% | 2884 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,363 psi | 60% | 2756 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 39,508 psi | 62% | 2762 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 50,473 psi | 79% | 2972 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,422 psi | 63% | 2776 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 80% | 39,363 psi | 62% | 2782 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,862 psi | 73% | 2989 fps | 98.7% |
| Alliant Power Pro 2000-MR | 46.5 gr | 84% | 39,697 psi | 62% | 2881 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 33,707 psi | 53% | 2664 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,152 psi | 74% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 39,146 psi | 61% | 2792 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,017 psi | 64% | 2887 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,882 psi | 56% | 2792 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,603 psi | 78% | 2848 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,118 psi | 63% | 2812 fps | 95.3% |
| Bofors RP3 | <<locked>> | 82% | 33,011 psi | 52% | 2657 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,569 psi | 67% | 2782 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,551 psi | 60% | 2785 fps | 98% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,395 psi | 66% | 2923 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 80% | 46,093 psi | 72% | 2897 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,949 psi | 74% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 41,959 psi | 66% | 2841 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 38,624 psi | 61% | 2769 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,085 psi | 55% | 2710 fps | 95.3% |
| Hodgdon LEVERevolution | 43.4 gr | 80% | 34,490 psi | 54% | 2717 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,469 psi | 40% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,376 psi | 59% | 2723 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 37,579 psi | 59% | 2779 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 38,928 psi | 61% | 2743 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,273 psi | 85% | 2999 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 48,051 psi | 75% | 2841 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,272 psi | 83% | 3012 fps | 95.3% |
| IMR 4831 | <<locked>> | 98% | 41,655 psi | 65% | 2877 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 34,998 psi | 55% | 2707 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 40,422 psi | 63% | 2776 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 80% | 45,165 psi | 71% | 2864 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 36,709 psi | 58% | 2733 fps | 98.5% |
| Lovex S060 | <<locked>> | 80% | 39,160 psi | 61% | 2703 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 33,837 psi | 53% | 2635 fps | 96.1% |
| Lovex S065 | <<locked>> | 96% | 45,774 psi | 72% | 2887 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 53,200 psi | 83% | 2936 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,420 psi | 59% | 2710 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 37,565 psi | 59% | 2726 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 35,839 psi | 56% | 2720 fps | 95.3% |
| Norma URP | <<locked>> | 96% | 41,017 psi | 64% | 2877 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 37,985 psi | 60% | 2789 fps | 95.7% |
| Ramshot TAC | <<locked>> | 84% | 46,282 psi | 73% | 2887 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,378 psi | 62% | 2785 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,903 psi | 69% | 2828 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 40% | 1709 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,455 psi | 71% | 2874 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,124 psi | 77% | 2949 fps | 95.2% |
| ReloadSwiss RS 52 | 44 gr | 82% | 37,855 psi | 59% | 2831 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 31,212 psi | 49% | 2671 fps | 96.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,497 psi | 68% | 2956 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,686 psi | 70% | 2972 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 40,973 psi | 64% | 2769 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 35,520 psi | 56% | 2657 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 84% | 33,156 psi | 52% | 2654 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 45,774 psi | 72% | 2887 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,709 psi | 58% | 2733 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 33,837 psi | 53% | 2635 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,182 psi | 76% | 2894 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,882 psi | 84% | 2654 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,908 psi | 80% | 2979 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 37,188 psi | 58% | 2776 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,066 psi | 75% | 2890 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 43,859 psi | 69% | 2848 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,854 psi | 58% | 2717 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,117 psi | 61% | 2684 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,053 psi | 50% | 2533 fps | 98.8% |
| Somchem S321 | <<locked>> | 80% | 43,569 psi | 68% | 2861 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 38,682 psi | 61% | 2687 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 38,145 psi | 60% | 2736 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 34,272 psi | 54% | 2667 fps | 95.2% |
| Somchem S365 | <<locked>> | 92% | 31,908 psi | 50% | 2690 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 44,454 psi | 70% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,305 psi | 62% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,461 psi | 54% | 2657 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 35,433 psi | 56% | 2657 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 30,560 psi | 48% | 2549 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 94% | 40,451 psi | 63% | 2825 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 40,190 psi | 63% | 2769 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 34,171 psi | 54% | 2641 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 96% | 42,279 psi | 66% | 2881 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,926 psi | 56% | 2687 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,276 psi | 62% | 2808 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,984 psi | 56% | 2713 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 96 powders for .284 Win. loaded with the .284 | 120gr | AERO SB.HSD 2.0 ,- smax:15.20. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,222 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,222 fps. Accurate 4350 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 (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .284 Win. with the .284 | 120gr | AERO SB.HSD 2.0 ,- smax:15.20 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.