Load Specifications
Load data in caliber .284 Win. with .284 | 150gr | Prvi Partizan HP BT bullet and 99 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, 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.
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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 2015 | <<locked>> | 84% | 56,594 psi | 89% | 2674 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,347 psi | 87% | 2700 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,145 psi | 90% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,114 psi | 85% | 2700 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,163 psi | 66% | 2605 fps | 96.6% |
| Accurate 4064 | <<locked>> | 90% | 55,274 psi | 87% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,114 psi | 86% | 2835 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 55,695 psi | 87% | 2779 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,724 psi | 89% | 2779 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,404 psi | 85% | 2726 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,419 psi | 87% | 2697 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,158 psi | 86% | 2894 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,826 psi | 89% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,203 psi | 90% | 2822 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 57,711 psi | 90% | 2927 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,234 psi | 63% | 2635 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,194 psi | 71% | 2799 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,332 psi | 87% | 2795 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 57,276 psi | 90% | 2815 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,421 psi | 90% | 2792 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,217 psi | 88% | 2710 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,479 psi | 90% | 2805 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,927 psi | 88% | 2854 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,621 psi | 86% | 2779 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 54,389 psi | 85% | 2831 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 54,998 psi | 86% | 2795 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 86% | 56,246 psi | 88% | 2789 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2766 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,666 psi | 87% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,708 psi | 86% | 2864 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 56% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,188 psi | 90% | 2789 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,333 psi | 88% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,188 psi | 88% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,854 psi | 88% | 2743 fps | 98.3% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,725 psi | 90% | 2818 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,796 psi | 87% | 2769 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2825 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 55,187 psi | 86% | 2802 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,404 psi | 85% | 2726 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,448 psi | 87% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,114 psi | 86% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 56,057 psi | 88% | 2759 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,085 psi | 86% | 2762 fps | 99.1% |
| Lovex S070 | <<locked>> | 98% | 56,188 psi | 88% | 2799 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 54,331 psi | 85% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,752 psi | 86% | 2723 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,362 psi | 88% | 2808 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,520 psi | 85% | 2808 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 45,150 psi | 71% | 2753 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 54,230 psi | 85% | 2822 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 90% | 57,058 psi | 89% | 2835 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2871 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 54,665 psi | 86% | 2749 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,433 psi | 85% | 2766 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,114 psi | 86% | 2726 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1722 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,290 psi | 90% | 2753 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,056 psi | 86% | 2762 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,186 psi | 85% | 2835 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,377 psi | 90% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,694 psi | 86% | 2854 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,331 psi | 85% | 2884 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 55,361 psi | 87% | 2703 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,955 psi | 86% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,145 psi | 90% | 2805 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,421 psi | 90% | 2792 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,085 psi | 86% | 2762 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,448 psi | 87% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,057 psi | 88% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,188 psi | 88% | 2799 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,463 psi | 87% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,029 psi | 89% | 2782 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,653 psi | 90% | 2802 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,869 psi | 88% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,130 psi | 88% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,477 psi | 87% | 2717 fps | 98.2% |
| Somchem S321 | <<locked>> | 82% | 55,695 psi | 87% | 2759 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,129 psi | 86% | 2661 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,420 psi | 88% | 2769 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,377 psi | 90% | 2802 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,243 psi | 82% | 2825 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,399 psi | 76% | 2707 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 55,376 psi | 87% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,144 psi | 88% | 2648 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,505 psi | 85% | 2684 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,405 psi | 87% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,274 psi | 87% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,637 psi | 89% | 2815 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 54,984 psi | 86% | 2726 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,985 psi | 89% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,593 psi | 87% | 2822 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,280 psi | 69% | 2707 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,811 psi | 89% | 2792 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,839 psi | 86% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,389 psi | 85% | 2831 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,056 psi | 56% | 2644 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,363 psi | 90% | 2805 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% | 49,951 psi | 78% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,728 psi | 67% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,748 psi | 78% | 2664 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,527 psi | 70% | 2539 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 36,883 psi | 58% | 2500 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,422 psi | 63% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,763 psi | 50% | 2398 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,093 psi | 72% | 2628 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,189 psi | 61% | 2480 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,124 psi | 75% | 2631 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,921 psi | 77% | 2612 fps | 100% |
| Alliant Power Pro 2000-MR | 43.7 gr | 80% | 42,090 psi | 66% | 2664 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,870 psi | 61% | 2503 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,785 psi | 65% | 2566 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,169 psi | 50% | 2411 fps | 95.2% |
| Alliant Reloder-17 | 43 gr | 80% | 33,634 psi | 53% | 2477 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,646 psi | 46% | 2372 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,185 psi | 54% | 2546 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,281 psi | 71% | 2631 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 38,566 psi | 60% | 2507 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 44,889 psi | 70% | 2585 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,893 psi | 78% | 2618 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,253 psi | 74% | 2657 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,185 psi | 82% | 2802 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 39,450 psi | 62% | 2513 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 41,771 psi | 65% | 2612 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 90% | 48,399 psi | 76% | 2687 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 46,528 psi | 73% | 2638 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,804 psi | 44% | 2264 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,525 psi | 67% | 2612 fps | 99.7% |
| Hodgdon Superformance | 51.1 gr | 90% | 44,193 psi | 69% | 2680 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 42% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,701 psi | 70% | 2592 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 46,325 psi | 73% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,162 psi | 65% | 2513 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,613 psi | 68% | 2533 fps | 95.8% |
| IMR 4350 | <<locked>> | 92% | 44,976 psi | 70% | 2612 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,598 psi | 68% | 2562 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 33,127 psi | 52% | 2415 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 42,801 psi | 67% | 2595 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 48,124 psi | 75% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,266 psi | 71% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,006 psi | 72% | 2562 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 41,191 psi | 65% | 2520 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 35,955 psi | 56% | 2411 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 41,147 psi | 64% | 2543 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,121 psi | 71% | 2579 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 45,397 psi | 71% | 2582 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,147 psi | 64% | 2556 fps | 99% |
| Norma 204 | <<locked>> | 96% | 51,169 psi | 80% | 2756 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 42,119 psi | 66% | 2690 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 32,300 psi | 51% | 2402 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 40,785 psi | 64% | 2569 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 38,290 psi | 60% | 2549 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 48,037 psi | 75% | 2641 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,630 psi | 75% | 2661 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,663 psi | 81% | 2677 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,992 psi | 42% | 1539 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,896 psi | 84% | 2707 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,639 psi | 62% | 2493 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,034 psi | 69% | 2667 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,766 psi | 56% | 2543 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,779 psi | 53% | 2467 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,085 psi | 57% | 2526 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 49,052 psi | 77% | 2612 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,917 psi | 67% | 2530 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 36,274 psi | 57% | 2454 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 44,889 psi | 70% | 2585 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,955 psi | 56% | 2411 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,266 psi | 71% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,191 psi | 65% | 2520 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 41,147 psi | 64% | 2543 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,231 psi | 58% | 2500 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,514 psi | 73% | 2618 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,440 psi | 70% | 2595 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,514 psi | 73% | 2530 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,812 psi | 61% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,815 psi | 67% | 2513 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 52,069 psi | 82% | 2707 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,050 psi | 72% | 2530 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,108 psi | 72% | 2612 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,144 psi | 58% | 2461 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 27,093 psi | 42% | 2300 fps | 96.5% |
| Somchem S385 | <<locked>> | 98% | 45,411 psi | 71% | 2654 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 52,388 psi | 82% | 2582 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,876 psi | 73% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,670 psi | 67% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,931 psi | 67% | 2520 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,215 psi | 55% | 2395 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 33,562 psi | 53% | 2402 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 48,153 psi | 75% | 2625 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,524 psi | 65% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,025 psi | 52% | 2402 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 29,921 psi | 47% | 2395 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,227 psi | 49% | 2326 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 48,066 psi | 75% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 41,771 psi | 65% | 2612 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,992 psi | 44% | 2392 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,048 psi | 69% | 2602 fps | 99.6% |
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 99 powders for .284 Win. loaded with the .284 | 150gr | Prvi Partizan HP BT. Alliant Reloder-17 delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,927 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .284 Win. with the .284 | 150gr | Prvi Partizan HP BT 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.