Load Specifications
Load data in caliber .284 Win. with .284 | 120gr | Barnes TTSX BT 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% | 57,087 psi | 89% | 3005 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,246 psi | 90% | 3110 fps | 99% |
| Accurate 2460 | <<locked>> | 86% | 55,709 psi | 87% | 3031 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,070 psi | 85% | 3012 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 57,421 psi | 90% | 3091 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 57,435 psi | 90% | 3104 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,485 psi | 73% | 2992 fps | 97% |
| Accurate LT-30 | <<locked>> | 84% | 56,869 psi | 89% | 2953 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,290 psi | 90% | 2979 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,086 psi | 88% | 3094 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 98% | 57,450 psi | 90% | 3091 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 53,896 psi | 84% | 3025 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,550 psi | 87% | 3051 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 90% | 55,405 psi | 87% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,971 psi | 89% | 3166 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,825 psi | 87% | 3209 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,492 psi | 89% | 3110 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,782 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 57,421 psi | 90% | 3133 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2999 fps | 97% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,809 psi | 84% | 3173 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,130 psi | 88% | 2946 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,434 psi | 88% | 3110 fps | 98.8% |
| Bofors RP3 | <<locked>> | 98% | 57,116 psi | 90% | 3127 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 57,725 psi | 90% | 3041 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,302 psi | 85% | 3077 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,594 psi | 89% | 3182 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 86% | 56,362 psi | 88% | 3061 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 57,667 psi | 90% | 3087 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,042 psi | 86% | 3081 fps | 98% |
| Hodgdon H4895 | <<locked>> | 92% | 56,637 psi | 89% | 3107 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,380 psi | 66% | 2877 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,579 psi | 87% | 3136 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,330 psi | 54% | 1864 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,868 psi | 86% | 3058 fps | 99.5% |
| IMR 3031 | <<locked>> | 92% | 55,883 psi | 88% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,565 psi | 89% | 3071 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,406 psi | 90% | 3048 fps | 96.2% |
| IMR 4198 | <<locked>> | 86% | 57,130 psi | 90% | 2972 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,753 psi | 89% | 3068 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,295 psi | 69% | 2930 fps | 96.5% |
| IMR 4895 | <<locked>> | 94% | 55,332 psi | 87% | 3114 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 55,550 psi | 87% | 3051 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 55,709 psi | 87% | 3038 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,434 psi | 87% | 3074 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,231 psi | 88% | 3025 fps | 99.4% |
| Lovex S062 | <<locked>> | 96% | 56,173 psi | 88% | 3071 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,880 psi | 81% | 2995 fps | 96.6% |
| Norma 200 | <<locked>> | 82% | 56,333 psi | 88% | 2982 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,694 psi | 86% | 3038 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 55,419 psi | 87% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,507 psi | 89% | 3120 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 46,470 psi | 73% | 2986 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 96% | 57,276 psi | 90% | 3146 fps | 99.4% |
| Ramshot TAC | <<locked>> | 90% | 56,130 psi | 88% | 3061 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,434 psi | 87% | 3084 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,884 psi | 89% | 3051 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,737 psi | 54% | 1909 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,216 psi | 87% | 3038 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,724 psi | 87% | 3061 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,911 psi | 84% | 3146 fps | 98.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3245 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,543 psi | 73% | 3012 fps | 96.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 3038 fps | 96% |
| Rottweil R 901 | <<locked>> | 90% | 55,564 psi | 87% | 3028 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,998 psi | 86% | 3035 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,565 psi | 89% | 3110 fps | 99.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,880 psi | 81% | 2995 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,434 psi | 87% | 3074 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,173 psi | 88% | 3071 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,085 psi | 86% | 3005 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,579 psi | 89% | 2687 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,491 psi | 85% | 3035 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,288 psi | 87% | 3123 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,375 psi | 85% | 2989 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,186 psi | 85% | 3035 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,723 psi | 86% | 3064 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,898 psi | 89% | 2986 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,869 psi | 89% | 2982 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 56,913 psi | 89% | 3087 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,941 psi | 88% | 2982 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 57,711 psi | 90% | 3091 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3114 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,307 psi | 65% | 2930 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 88% | 56,768 psi | 89% | 2959 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,826 psi | 89% | 2972 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,186 psi | 85% | 3005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,738 psi | 87% | 3022 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,434 psi | 87% | 3041 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 2992 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 90% | 56,188 psi | 88% | 3054 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 53,954 psi | 85% | 3018 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,109 psi | 75% | 2995 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,415 psi | 79% | 2979 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 55,608 psi | 87% | 3104 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,331 psi | 85% | 3071 fps | 99.5% |
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% | 41,394 psi | 65% | 2756 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,679 psi | 84% | 3051 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 45,194 psi | 71% | 2861 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 33,489 psi | 52% | 2638 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 40,466 psi | 63% | 2802 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 31,705 psi | 50% | 2615 fps | 98.2% |
| Accurate 4350 | <<locked>> | 96% | 40,132 psi | 63% | 2864 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 50,241 psi | 79% | 2854 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,618 psi | 79% | 2877 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,116 psi | 60% | 2749 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 39,305 psi | 62% | 2756 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 50,502 psi | 79% | 2969 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,190 psi | 63% | 2772 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 39,349 psi | 62% | 2782 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,572 psi | 73% | 2982 fps | 98.6% |
| Alliant Power Pro 2000-MR | 46.3 gr | 84% | 39,479 psi | 62% | 2874 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 33,707 psi | 53% | 2661 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,152 psi | 74% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 38,885 psi | 61% | 2785 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,828 psi | 64% | 2881 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,694 psi | 56% | 2785 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,371 psi | 77% | 2844 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,885 psi | 63% | 2802 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 32,793 psi | 51% | 2651 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,308 psi | 66% | 2776 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,290 psi | 60% | 2779 fps | 98% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,424 psi | 66% | 2923 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 80% | 46,108 psi | 72% | 2897 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,978 psi | 74% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 42,003 psi | 66% | 2841 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 38,363 psi | 60% | 2762 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,896 psi | 55% | 2707 fps | 95.2% |
| Hodgdon LEVERevolution | 43.3 gr | 80% | 34,505 psi | 54% | 2717 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,585 psi | 40% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,130 psi | 58% | 2713 fps | 96.2% |
| IMR 3031 | <<locked>> | 80% | 37,318 psi | 58% | 2772 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 38,711 psi | 61% | 2736 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,041 psi | 85% | 2992 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 47,703 psi | 75% | 2835 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,069 psi | 83% | 3005 fps | 95.2% |
| IMR 4831 | <<locked>> | 98% | 41,437 psi | 65% | 2871 fps | 95.7% |
| IMR 4895 | <<locked>> | 82% | 37,347 psi | 59% | 2766 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 40,190 psi | 63% | 2772 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 80% | 44,875 psi | 70% | 2858 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 36,448 psi | 57% | 2726 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 38,957 psi | 61% | 2700 fps | 96.3% |
| Lovex S062 | <<locked>> | 80% | 33,591 psi | 53% | 2628 fps | 96% |
| Lovex S065 | <<locked>> | 96% | 45,556 psi | 71% | 2884 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 52,924 psi | 83% | 2933 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,202 psi | 58% | 2703 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 37,318 psi | 58% | 2723 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 35,810 psi | 56% | 2717 fps | 95.2% |
| Norma URP | <<locked>> | 96% | 40,814 psi | 64% | 2871 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 37,826 psi | 59% | 2782 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 46,050 psi | 72% | 2884 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,421 psi | 62% | 2785 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,671 psi | 68% | 2822 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,585 psi | 40% | 1706 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,208 psi | 71% | 2871 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,907 psi | 77% | 2943 fps | 95.1% |
| ReloadSwiss RS 52 | 43.8 gr | 82% | 37,608 psi | 59% | 2822 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 31,038 psi | 49% | 2664 fps | 95.9% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,294 psi | 68% | 2949 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,556 psi | 70% | 2969 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,930 psi | 64% | 2769 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 35,302 psi | 55% | 2648 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 84% | 32,938 psi | 52% | 2648 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 96% | 45,556 psi | 71% | 2884 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,448 psi | 57% | 2726 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 33,591 psi | 53% | 2628 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,906 psi | 75% | 2887 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,867 psi | 84% | 2654 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,952 psi | 80% | 2979 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,970 psi | 58% | 2769 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,051 psi | 75% | 2890 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 43,932 psi | 69% | 2851 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,825 psi | 58% | 2713 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 | 98.7% |
| Somchem S321 | <<locked>> | 80% | 43,308 psi | 68% | 2854 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 38,435 psi | 60% | 2680 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 37,913 psi | 59% | 2730 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 34,055 psi | 53% | 2661 fps | 95.1% |
| Somchem S365 | <<locked>> | 92% | 31,778 psi | 50% | 2687 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 44,440 psi | 70% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,305 psi | 62% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,447 psi | 54% | 2654 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 35,433 psi | 56% | 2657 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 30,385 psi | 48% | 2543 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 96% | 42,902 psi | 67% | 2877 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 40,205 psi | 63% | 2766 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 33,968 psi | 53% | 2635 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 96% | 42,090 psi | 66% | 2874 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,766 psi | 56% | 2680 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 39,305 psi | 62% | 2808 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,984 psi | 56% | 2713 fps | 95.9% |
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 111 powders for .284 Win. loaded with the .284 | 120gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,245 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,245 fps. Accurate 4350 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, 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 | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 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.