Load Specifications
Bullet Manufacturer:Prvi Partizan
Bullet Weight:158 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:1:11.0
Load data in caliber .284 Win. with .284 | 158gr | Prvi Partizan Grom bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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% | 54,462 psi | 85% | 2572 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,101 psi | 89% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,984 psi | 86% | 2664 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,724 psi | 87% | 2657 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,121 psi | 69% | 2575 fps | 97.6% |
| Accurate 4064 | <<locked>> | 90% | 57,101 psi | 89% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,985 psi | 89% | 2785 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 57,232 psi | 90% | 2726 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,839 psi | 86% | 2684 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,677 psi | 81% | 2717 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,173 psi | 88% | 2677 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,435 psi | 90% | 2644 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,116 psi | 90% | 2851 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,488 psi | 81% | 2717 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,071 psi | 86% | 2703 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,448 psi | 87% | 2723 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,650 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,593 psi | 87% | 2822 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 2707 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,829 psi | 66% | 2602 fps | 99.7% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,840 psi | 58% | 2503 fps | 96% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,007 psi | 74% | 2766 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,058 psi | 89% | 2746 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 55,579 psi | 87% | 2717 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,288 psi | 87% | 2694 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,522 psi | 90% | 2654 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,463 psi | 87% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,405 psi | 88% | 2733 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 56,086 psi | 88% | 2785 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 56,478 psi | 89% | 2746 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 84% | 54,389 psi | 85% | 2690 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,346 psi | 85% | 2717 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,537 psi | 90% | 2772 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,608 psi | 89% | 2825 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 56% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,274 psi | 87% | 2687 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,389 psi | 85% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,317 psi | 85% | 2664 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,348 psi | 90% | 2694 fps | 98.9% |
| IMR 4350 | <<locked>> | 98% | 55,825 psi | 87% | 2720 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,406 psi | 90% | 2723 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 2776 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 56,884 psi | 89% | 2749 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,173 psi | 88% | 2677 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,174 psi | 90% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,434 psi | 88% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,682 psi | 90% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,826 psi | 89% | 2717 fps | 99.6% |
| Lovex S070 | <<locked>> | 96% | 54,302 psi | 85% | 2703 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 55,753 psi | 87% | 2671 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,579 psi | 89% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,650 psi | 86% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,594 psi | 89% | 2772 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 46,775 psi | 73% | 2723 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 55,898 psi | 88% | 2772 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,172 psi | 86% | 2736 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,795 psi | 86% | 2776 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 56,231 psi | 88% | 2700 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,057 psi | 88% | 2717 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,565 psi | 89% | 2677 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,361 psi | 57% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,463 psi | 88% | 2713 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,086 psi | 88% | 2789 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,521 psi | 87% | 2822 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,782 psi | 89% | 2812 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,130 psi | 88% | 2841 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 56,710 psi | 89% | 2648 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,420 psi | 88% | 2671 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,463 psi | 87% | 2710 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,443 psi | 77% | 2690 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 55,288 psi | 87% | 2694 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,826 psi | 89% | 2717 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,174 psi | 90% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,682 psi | 90% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,302 psi | 85% | 2703 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,072 psi | 89% | 2769 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,926 psi | 86% | 2684 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,521 psi | 87% | 2700 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,174 psi | 90% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,624 psi | 90% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,884 psi | 89% | 2671 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,979 psi | 77% | 2684 fps | 96.3% |
| Somchem S321 | <<locked>> | 82% | 57,305 psi | 90% | 2707 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,536 psi | 89% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,404 psi | 85% | 2671 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,680 psi | 87% | 2707 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2776 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 2667 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 82% | 56,913 psi | 89% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,464 psi | 90% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,478 psi | 89% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,971 psi | 89% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,072 psi | 89% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,723 psi | 86% | 2720 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 56,449 psi | 88% | 2674 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,882 psi | 86% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,363 psi | 90% | 2776 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 2674 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,708 psi | 86% | 2697 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,521 psi | 89% | 2720 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,492 psi | 89% | 2792 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,391 psi | 59% | 2621 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,347 psi | 87% | 2707 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% | 51,445 psi | 81% | 2533 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,990 psi | 69% | 2467 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,300 psi | 80% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,018 psi | 67% | 2451 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 35,781 psi | 56% | 2415 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 41,640 psi | 65% | 2467 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,806 psi | 48% | 2313 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 47,253 psi | 74% | 2579 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,176 psi | 63% | 2438 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 98% | 48,486 psi | 76% | 2661 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,356 psi | 77% | 2579 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,328 psi | 79% | 2556 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,395 psi | 68% | 2625 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 45,107 psi | 71% | 2605 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,234 psi | 63% | 2464 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,931 psi | 67% | 2523 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,241 psi | 49% | 2326 fps | 95.5% |
| Alliant Reloder-17 | 42.5 gr | 80% | 34,693 psi | 54% | 2444 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,340 psi | 74% | 2651 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,137 psi | 43% | 2244 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,679 psi | 54% | 2451 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,025 psi | 52% | 2461 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,673 psi | 73% | 2589 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 40,045 psi | 63% | 2470 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 40,741 psi | 64% | 2444 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,981 psi | 80% | 2562 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,675 psi | 76% | 2608 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,625 psi | 64% | 2474 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 86% | 40,350 psi | 63% | 2520 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 43,845 psi | 69% | 2539 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,761 psi | 75% | 2589 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,660 psi | 45% | 2231 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,874 psi | 69% | 2566 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,569 psi | 67% | 2589 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 42% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,832 psi | 72% | 2543 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,964 psi | 75% | 2575 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,206 psi | 66% | 2467 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,643 psi | 70% | 2490 fps | 96.7% |
| IMR 4350 | <<locked>> | 88% | 40,785 psi | 64% | 2470 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,595 psi | 62% | 2421 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 30,066 psi | 47% | 2277 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,019 psi | 69% | 2549 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 49,356 psi | 77% | 2579 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,978 psi | 74% | 2559 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,978 psi | 74% | 2513 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 42,279 psi | 66% | 2474 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,751 psi | 54% | 2326 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 39,885 psi | 63% | 2454 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 46,253 psi | 72% | 2530 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,905 psi | 74% | 2536 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,322 psi | 66% | 2510 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 46,108 psi | 72% | 2605 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 40,669 psi | 64% | 2602 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 31,227 psi | 49% | 2316 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 42,119 psi | 66% | 2530 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 37,028 psi | 58% | 2457 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 49,327 psi | 77% | 2598 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,008 psi | 77% | 2612 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,330 psi | 84% | 2631 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,050 psi | 42% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,060 psi | 64% | 2457 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,513 psi | 71% | 2625 fps | 99.5% |
| ReloadSwiss RS 60 | 42.5 gr | 80% | 36,883 psi | 58% | 2503 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,692 psi | 51% | 2382 fps | 95.7% |
| ReloadSwiss RS 70 | 45.3 gr | 84% | 34,882 psi | 55% | 2441 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 50,473 psi | 79% | 2562 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,251 psi | 69% | 2487 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 37,652 psi | 59% | 2418 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 98% | 46,282 psi | 73% | 2638 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 40,741 psi | 64% | 2444 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,751 psi | 54% | 2326 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,978 psi | 74% | 2559 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,279 psi | 66% | 2474 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 39,885 psi | 63% | 2454 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,421 psi | 60% | 2461 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,877 psi | 75% | 2575 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,658 psi | 72% | 2549 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,529 psi | 74% | 2477 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,740 psi | 62% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,595 psi | 60% | 2369 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,847 psi | 72% | 2631 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 53,534 psi | 84% | 2657 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,108 psi | 74% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,485 psi | 74% | 2569 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 38,203 psi | 60% | 2418 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 27,992 psi | 44% | 2274 fps | 97.6% |
| Somchem S385 | <<locked>> | 94% | 41,089 psi | 64% | 2513 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 53,476 psi | 84% | 2523 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,935 psi | 75% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,859 psi | 69% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,382 psi | 70% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,506 psi | 57% | 2359 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 32,489 psi | 51% | 2316 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 49,734 psi | 78% | 2582 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,685 psi | 67% | 2467 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,039 psi | 50% | 2320 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 29,167 psi | 46% | 2313 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,155 psi | 50% | 2293 fps | 97.9% |
| Winchester 748 | <<locked>> | 80% | 49,530 psi | 78% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,582 psi | 64% | 2523 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,180 psi | 43% | 2316 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,353 psi | 71% | 2556 fps | 99.9% |
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 103 powders for .284 Win. loaded with the .284 | 158gr | Prvi Partizan Grom. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,851 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,851 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 158.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .284 Win. with the .284 | 158gr | Prvi Partizan Grom 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.