Load Specifications
Bullet Manufacturer:Geco
Bullet Weight:165 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:.284 Win. load data
Case Length (l3):2.17"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:66 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.5
Load data in caliber .284 Win. with .284 | 165gr | Geco SOFTPOINT bullet and 108 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-16.
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 2495 | <<locked>> | 86% | 57,624 psi | 90% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,854 psi | 88% | 2625 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,472 psi | 76% | 2605 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 54,302 psi | 85% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,404 psi | 85% | 2710 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 52,808 psi | 83% | 2789 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 84% | 57,450 psi | 90% | 2687 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,911 psi | 86% | 2644 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 2746 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,999 psi | 88% | 2631 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,667 psi | 90% | 2815 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,593 psi | 87% | 2743 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,376 psi | 87% | 2664 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,724 psi | 87% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,492 psi | 87% | 2762 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,898 psi | 89% | 2792 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 2736 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,399 psi | 76% | 2684 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,687 psi | 72% | 2628 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,914 psi | 63% | 2546 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,924 psi | 81% | 2805 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,130 psi | 90% | 2707 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 44,338 psi | 69% | 2608 fps | 95.8% |
| Bofors RP3 | <<locked>> | 88% | 56,260 psi | 88% | 2680 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,399 psi | 76% | 2684 fps | 97.1% |
| Bofors RP7 | <<locked>> | 92% | 55,811 psi | 87% | 2664 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,580 psi | 90% | 2615 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,724 psi | 87% | 2664 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,869 psi | 89% | 2697 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 56,913 psi | 89% | 2759 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 57,072 psi | 89% | 2720 fps | 98.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 53,476 psi | 84% | 2687 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 82% | 54,433 psi | 85% | 2644 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,651 psi | 87% | 2690 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,172 psi | 85% | 2680 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,276 psi | 90% | 2799 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 57% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,419 psi | 87% | 2648 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,085 psi | 86% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,491 psi | 85% | 2628 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,450 psi | 90% | 2661 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 56,289 psi | 88% | 2690 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,493 psi | 90% | 2690 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 55,100 psi | 86% | 2703 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,174 psi | 90% | 2710 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,332 psi | 87% | 2680 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 82% | 55,999 psi | 88% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,624 psi | 90% | 2661 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,434 psi | 88% | 2615 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,607 psi | 86% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,392 psi | 90% | 2687 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 54,969 psi | 86% | 2677 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,176 psi | 63% | 2467 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 56,057 psi | 88% | 2631 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,869 psi | 89% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,998 psi | 86% | 2671 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,043 psi | 89% | 2743 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 51,097 psi | 80% | 2759 fps | 98.8% |
| Norma URP | <<locked>> | 96% | 56,797 psi | 89% | 2743 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,782 psi | 87% | 2700 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,535 psi | 87% | 2746 fps | 99.7% |
| Ramshot TAC | <<locked>> | 82% | 56,159 psi | 88% | 2664 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,231 psi | 88% | 2677 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 58% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,695 psi | 89% | 2680 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,681 psi | 89% | 2749 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,521 psi | 89% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,215 psi | 85% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,869 psi | 89% | 2812 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,101 psi | 89% | 2608 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,681 psi | 89% | 2631 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,144 psi | 88% | 2674 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2720 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 2720 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 92% | 55,811 psi | 87% | 2664 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,392 psi | 90% | 2687 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,624 psi | 90% | 2661 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,607 psi | 86% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,969 psi | 86% | 2677 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,230 psi | 85% | 2684 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,027 psi | 86% | 2644 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,651 psi | 87% | 2661 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,246 psi | 90% | 2566 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,476 psi | 85% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,537 psi | 90% | 2644 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,374 psi | 84% | 2717 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 56,608 psi | 89% | 2562 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,534 psi | 85% | 2631 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,231 psi | 88% | 2671 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 55,811 psi | 87% | 2664 fps | 96.2% |
| Somchem S365 | <<locked>> | 98% | 55,767 psi | 87% | 2746 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 2700 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 84% | 57,667 psi | 90% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,956 psi | 89% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,130 psi | 90% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,056 psi | 85% | 2602 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,608 psi | 87% | 2687 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,050 psi | 74% | 2572 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 82% | 56,608 psi | 89% | 2635 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,332 psi | 87% | 2608 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,679 psi | 86% | 2697 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 2700 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,332 psi | 87% | 2664 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,927 psi | 89% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,232 psi | 90% | 2762 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,930 psi | 64% | 2667 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,869 psi | 88% | 2671 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 2641 fps | 97.3% |
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 2495 | <<locked>> | 80% | 47,587 psi | 75% | 2474 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,948 psi | 72% | 2474 fps | 97% |
| Accurate 3100 | <<locked>> | 90% | 34,461 psi | 54% | 2349 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,020 psi | 71% | 2477 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,910 psi | 53% | 2346 fps | 97.3% |
| Accurate High Country | <<locked>> | 96% | 45,977 psi | 72% | 2674 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,705 psi | 79% | 2592 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,975 psi | 67% | 2454 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 43,047 psi | 67% | 2533 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,823 psi | 83% | 2589 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,717 psi | 73% | 2644 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 43,105 psi | 68% | 2536 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,294 psi | 68% | 2480 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,311 psi | 73% | 2543 fps | 99.8% |
| Alliant Reloder-16 | 41.1 gr | 80% | 33,634 psi | 53% | 2359 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,550 psi | 59% | 2470 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 42,598 psi | 67% | 2530 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,308 psi | 66% | 2569 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,049 psi | 41% | 2178 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,257 psi | 52% | 2388 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,531 psi | 49% | 2388 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,241 psi | 79% | 2605 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 41,727 psi | 65% | 2556 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 43,178 psi | 68% | 2487 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,308 psi | 66% | 2569 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 38,493 psi | 60% | 2365 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,983 psi | 85% | 2566 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,243 psi | 82% | 2615 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,816 psi | 69% | 2493 fps | 99% |
| Hodgdon H414 | <<locked>> | 80% | 35,998 psi | 56% | 2392 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 41,669 psi | 65% | 2464 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 98% | 50,285 psi | 79% | 2635 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,285 psi | 80% | 2602 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,053 psi | 49% | 2260 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,427 psi | 74% | 2582 fps | 100% |
| Hodgdon Superformance | 47.9 gr | 82% | 37,405 psi | 59% | 2448 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 42% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,863 psi | 77% | 2552 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,416 psi | 81% | 2575 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,194 psi | 71% | 2484 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,645 psi | 75% | 2510 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 38,783 psi | 61% | 2395 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,972 psi | 63% | 2395 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 32,779 psi | 51% | 2306 fps | 97% |
| IMR 4895 | <<locked>> | 80% | 47,500 psi | 74% | 2569 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,156 psi | 82% | 2631 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 52,823 psi | 83% | 2589 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,386 psi | 79% | 2566 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,893 psi | 78% | 2520 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,324 psi | 71% | 2484 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,304 psi | 58% | 2349 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 35,607 psi | 56% | 2329 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 33,388 psi | 52% | 2323 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 49,414 psi | 77% | 2536 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,140 psi | 79% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,687 psi | 72% | 2530 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 43,743 psi | 69% | 2530 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 39,001 psi | 61% | 2533 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,924 psi | 53% | 2343 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 45,469 psi | 71% | 2546 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 35,114 psi | 55% | 2379 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 52,707 psi | 83% | 2612 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,721 psi | 83% | 2628 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 43% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,019 psi | 69% | 2480 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,414 psi | 77% | 2644 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,943 psi | 63% | 2523 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,518 psi | 53% | 2362 fps | 96.8% |
| ReloadSwiss RS 70 | 44.9 gr | 80% | 32,996 psi | 52% | 2362 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 53,838 psi | 84% | 2566 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,355 psi | 74% | 2497 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,698 psi | 64% | 2438 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 47,514 psi | 74% | 2562 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 41,365 psi | 65% | 2510 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 38,493 psi | 60% | 2365 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,304 psi | 58% | 2349 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,386 psi | 79% | 2566 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,324 psi | 71% | 2484 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,607 psi | 56% | 2329 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,597 psi | 65% | 2484 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,227 psi | 80% | 2589 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,936 psi | 77% | 2562 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,647 psi | 79% | 2480 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,598 psi | 67% | 2359 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,680 psi | 57% | 2297 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 40,973 psi | 64% | 2503 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,140 psi | 79% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,126 psi | 80% | 2582 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,133 psi | 64% | 2434 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 52,286 psi | 82% | 2612 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 30,429 psi | 48% | 2303 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 39,566 psi | 62% | 2448 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 51,126 psi | 80% | 2467 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,326 psi | 74% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,456 psi | 74% | 2477 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,320 psi | 62% | 2372 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,389 psi | 55% | 2346 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 41,350 psi | 65% | 2470 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 52,939 psi | 83% | 2585 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,818 psi | 72% | 2474 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,809 psi | 55% | 2346 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 28,282 psi | 44% | 2251 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,708 psi | 54% | 2320 fps | 99.2% |
| Winchester 748 | <<locked>> | 80% | 53,243 psi | 83% | 2631 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 35,998 psi | 56% | 2392 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,034 psi | 41% | 2257 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,008 psi | 77% | 2572 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,744 psi | 70% | 2536 fps | 95.8% |
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 108 powders for .284 Win. loaded with the .284 | 165gr | Geco SOFTPOINT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,815 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,815 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.284" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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-16 rank at the top here: for .284 Win. with the .284 | 165gr | Geco SOFTPOINT 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.