Load Specifications
Load data in caliber .284 Win. with .284 | 105gr | IBEX Viper bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Alliant Power Pro 2000-MR 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.
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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>> | 88% | 54,810 psi | 86% | 3146 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,392 psi | 90% | 3284 fps | 98% |
| Accurate 2460 | <<locked>> | 86% | 57,101 psi | 89% | 3222 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 56,550 psi | 89% | 3215 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,752 psi | 86% | 3222 fps | 99.9% |
| Accurate 4064 | <<locked>> | 96% | 56,101 psi | 88% | 3255 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 57,058 psi | 89% | 3130 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,377 psi | 90% | 3153 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,840 psi | 89% | 3274 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 98% | 57,334 psi | 90% | 3258 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 82% | 54,389 psi | 85% | 3209 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,869 psi | 88% | 3228 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 90% | 55,376 psi | 87% | 3222 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 57,522 psi | 90% | 3353 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,999 psi | 88% | 3376 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,942 psi | 89% | 3287 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,653 psi | 90% | 3209 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,375 psi | 85% | 3251 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,041 psi | 85% | 3337 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,231 psi | 88% | 3120 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,449 psi | 88% | 3278 fps | 97.8% |
| Bofors RP3 | <<locked>> | 96% | 54,215 psi | 85% | 3248 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,665 psi | 86% | 3159 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,998 psi | 86% | 3258 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,449 psi | 88% | 3356 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 86% | 56,362 psi | 88% | 3238 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,375 psi | 85% | 3212 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,666 psi | 87% | 3251 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 92% | 57,406 psi | 90% | 3291 fps | 99.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,294 psi | 68% | 3041 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,869 psi | 88% | 3314 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 55% | 2001 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,955 psi | 86% | 3228 fps | 98.8% |
| IMR 3031 | <<locked>> | 92% | 56,173 psi | 88% | 3284 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 57,014 psi | 89% | 3245 fps | 98.3% |
| IMR 4198 | <<locked>> | 86% | 57,305 psi | 90% | 3163 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 55,666 psi | 87% | 3287 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 90% | 55,869 psi | 88% | 3228 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 86% | 56,913 psi | 89% | 3225 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 56,478 psi | 89% | 3261 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,565 psi | 89% | 3192 fps | 98.6% |
| Lovex S062 | <<locked>> | 96% | 56,811 psi | 89% | 3248 fps | 99.5% |
| Norma 201 | <<locked>> | 92% | 55,941 psi | 88% | 3225 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 55,999 psi | 88% | 3235 fps | 100% |
| Norma 203B | <<locked>> | 96% | 57,000 psi | 89% | 3297 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 96% | 57,261 psi | 90% | 3314 fps | 98.6% |
| Ramshot TAC | <<locked>> | 90% | 56,579 psi | 89% | 3228 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,753 psi | 87% | 3258 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,508 psi | 90% | 3228 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,244 psi | 55% | 2047 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,753 psi | 87% | 3219 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 57,682 psi | 90% | 3383 fps | 98.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 3415 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 57,435 psi | 90% | 3222 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,188 psi | 88% | 3215 fps | 99.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3287 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,478 psi | 89% | 3261 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,811 psi | 89% | 3248 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,579 psi | 87% | 3179 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,058 psi | 89% | 2867 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,766 psi | 86% | 3212 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,448 psi | 87% | 3297 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,752 psi | 86% | 3176 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,998 psi | 86% | 3202 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,216 psi | 87% | 3238 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,609 psi | 90% | 3169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,942 psi | 89% | 3156 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 57,609 psi | 90% | 3271 fps | 99.6% |
| Somchem S335 | <<locked>> | 92% | 56,884 psi | 89% | 3166 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,911 psi | 84% | 3196 fps | 98.2% |
| Somchem S355 | <<locked>> | 98% | 54,476 psi | 85% | 3235 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,293 psi | 66% | 3094 fps | 97.7% |
| Vihtavuori N130 | <<locked>> | 88% | 57,377 psi | 90% | 3143 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,217 psi | 90% | 3156 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,897 psi | 86% | 3196 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 56,275 psi | 88% | 3205 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,825 psi | 87% | 3215 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,545 psi | 78% | 3153 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 90% | 56,507 psi | 89% | 3228 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 94% | 54,621 psi | 86% | 3196 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,024 psi | 80% | 3140 fps | 98.3% |
| Winchester 748 | <<locked>> | 90% | 55,564 psi | 87% | 3274 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,679 psi | 86% | 3245 fps | 98.9% |
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% | 43,178 psi | 68% | 2943 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,780 psi | 84% | 3222 fps | 97.4% |
| Accurate 2460 | <<locked>> | 80% | 47,036 psi | 74% | 3048 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 36,999 psi | 58% | 2858 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 42,163 psi | 66% | 2989 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 34,925 psi | 55% | 2828 fps | 97.9% |
| Accurate LT-30 | <<locked>> | 80% | 50,502 psi | 79% | 3025 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,894 psi | 80% | 3048 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 42,206 psi | 66% | 2986 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 42,873 psi | 67% | 2979 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 51,010 psi | 80% | 3153 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,394 psi | 65% | 2943 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 80% | 40,306 psi | 63% | 2966 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,601 psi | 75% | 3166 fps | 97.7% |
| Alliant Power Pro 2000-MR | 49.8 gr | 88% | 46,064 psi | 72% | 3173 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 37,405 psi | 59% | 2894 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,443 psi | 76% | 3058 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,801 psi | 67% | 3018 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,959 psi | 66% | 3081 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,690 psi | 78% | 3015 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 46,586 psi | 73% | 3094 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 37,202 psi | 58% | 2897 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,294 psi | 68% | 2943 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,958 psi | 63% | 2959 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,076 psi | 68% | 3087 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 46,644 psi | 73% | 3071 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 47,630 psi | 75% | 3091 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 49,023 psi | 77% | 3130 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 39,885 psi | 63% | 2940 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,901 psi | 64% | 2986 fps | 95.6% |
| Hodgdon LEVERevolution | 45.5 gr | 82% | 38,058 psi | 60% | 2946 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 41% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,276 psi | 60% | 2884 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 38,740 psi | 61% | 2959 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 42,279 psi | 66% | 2959 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 48,196 psi | 76% | 3018 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 41,089 psi | 64% | 2995 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 41,394 psi | 65% | 2943 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 80% | 46,891 psi | 73% | 3048 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,363 psi | 60% | 2913 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 40,030 psi | 63% | 2864 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 35,433 psi | 56% | 2808 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,407 psi | 62% | 2890 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 38,928 psi | 61% | 2904 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 42,192 psi | 66% | 3009 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 41,655 psi | 65% | 3012 fps | 95.2% |
| Ramshot TAC | <<locked>> | 88% | 53,272 psi | 83% | 3169 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,422 psi | 63% | 2949 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,875 psi | 70% | 2992 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,426 psi | 41% | 1837 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,151 psi | 72% | 3045 fps | 99% |
| ReloadSwiss RS 52 | 47.2 gr | 86% | 44,367 psi | 70% | 3127 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 34,722 psi | 54% | 2897 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 43,511 psi | 68% | 2966 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 37,623 psi | 59% | 2838 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 86% | 37,304 psi | 58% | 2890 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,363 psi | 60% | 2913 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 35,433 psi | 56% | 2808 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,921 psi | 77% | 3061 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,505 psi | 85% | 2835 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,547 psi | 81% | 3159 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 40,596 psi | 64% | 2995 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,602 psi | 76% | 3071 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 48,225 psi | 76% | 3081 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,553 psi | 64% | 2943 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,495 psi | 63% | 2858 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,489 psi | 52% | 2700 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 44,454 psi | 70% | 3028 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 40,277 psi | 63% | 2864 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 41,742 psi | 65% | 2956 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 38,218 psi | 60% | 2900 fps | 95% |
| Somchem S365 | <<locked>> | 94% | 35,520 psi | 56% | 2917 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 45,585 psi | 71% | 2953 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,393 psi | 63% | 2861 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 36,129 psi | 57% | 2838 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 36,738 psi | 58% | 2828 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 34,084 psi | 53% | 2772 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 98% | 46,731 psi | 73% | 3097 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 41,524 psi | 65% | 2940 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 35,607 psi | 56% | 2812 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 39,552 psi | 62% | 2900 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 40,248 psi | 63% | 2979 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 39,653 psi | 62% | 2943 fps | 95.6% |
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 83 powders for .284 Win. loaded with the .284 | 105gr | IBEX Viper. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,415 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,415 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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 52, Alliant Power Pro 2000-MR, Hodgdon LEVERevolution rank at the top here: for .284 Win. with the .284 | 105gr | IBEX Viper 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.