Load Specifications
Load data in caliber .25 WSSM with .257 | 80gr | CutEdge ESP Raptor bullet and 89 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.
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>> | 92% | 56,695 psi | 89% | 3346 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 57,638 psi | 90% | 3458 fps | 97.9% |
| Accurate 2230 | <<locked>> | 82% | 54,650 psi | 86% | 3396 fps | 97.8% |
| Accurate 2460 | <<locked>> | 88% | 55,695 psi | 87% | 3366 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 57,479 psi | 90% | 3402 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,288 psi | 87% | 3409 fps | 99.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 56,985 psi | 89% | 3438 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 57,145 psi | 90% | 3297 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 57,551 psi | 90% | 3323 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 56,086 psi | 88% | 3428 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 82% | 54,694 psi | 86% | 3274 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3415 fps | 98% |
| ADI AR 2219 | <<locked>> | 84% | 53,940 psi | 85% | 3369 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,550 psi | 87% | 3386 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 92% | 54,766 psi | 86% | 3379 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 56,681 psi | 89% | 3510 fps | 99% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 56,347 psi | 88% | 3547 fps | 97.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3435 fps | 99.1% |
| Alliant Reloder-10x | <<locked>> | 88% | 56,623 psi | 89% | 3366 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 57,363 psi | 90% | 3468 fps | 98.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 3422 fps | 98% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,898 psi | 88% | 3294 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,507 psi | 89% | 3284 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 56,202 psi | 88% | 3435 fps | 97.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 3451 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 92% | 57,725 psi | 90% | 3376 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,462 psi | 85% | 3409 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 90% | 56,188 psi | 88% | 3514 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 88% | 56,347 psi | 88% | 3406 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 57,667 psi | 90% | 3428 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 55,027 psi | 86% | 3402 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 82% | 55,535 psi | 87% | 3301 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 56,579 psi | 89% | 3442 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 55,303 psi | 87% | 3465 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,997 psi | 53% | 2110 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,926 psi | 86% | 3389 fps | 98.7% |
| IMR 3031 | <<locked>> | 94% | 55,288 psi | 87% | 3438 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,521 psi | 89% | 3399 fps | 98.1% |
| IMR 4198 | <<locked>> | 88% | 57,145 psi | 90% | 3330 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 54,795 psi | 86% | 3438 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 92% | 55,550 psi | 87% | 3386 fps | 99.2% |
| Lovex D073.4 | <<locked>> | 82% | 55,419 psi | 87% | 3383 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 88% | 55,637 psi | 87% | 3373 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 94% | 54,868 psi | 86% | 3399 fps | 99.9% |
| Lovex S060 | <<locked>> | 94% | 56,434 psi | 88% | 3353 fps | 98.5% |
| Lovex S062 | <<locked>> | 98% | 55,608 psi | 87% | 3396 fps | 99.3% |
| Norma 200 | <<locked>> | 84% | 56,289 psi | 88% | 3333 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,708 psi | 86% | 3369 fps | 99.2% |
| Norma 202 | <<locked>> | 94% | 55,056 psi | 86% | 3386 fps | 100% |
| Norma 203B | <<locked>> | 98% | 56,405 psi | 88% | 3451 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 98% | 57,159 psi | 90% | 3474 fps | 98.5% |
| Ramshot TAC | <<locked>> | 92% | 56,521 psi | 89% | 3386 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 92% | 55,419 psi | 87% | 3415 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 90% | 57,435 psi | 90% | 3389 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 54% | 2156 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,201 psi | 87% | 3376 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 57,305 psi | 90% | 3540 fps | 98.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 3510 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 92% | 55,100 psi | 86% | 3360 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 54,723 psi | 86% | 3360 fps | 99.2% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 3373 fps | 98.5% |
| Shooters World AR Plus | <<locked>> | 82% | 55,419 psi | 87% | 3383 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,868 psi | 86% | 3399 fps | 99.9% |
| Shooters World Precision | <<locked>> | 98% | 55,608 psi | 87% | 3396 fps | 99.3% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,492 psi | 87% | 3340 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 57,174 psi | 90% | 3035 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,360 psi | 85% | 3373 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3445 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,172 psi | 85% | 3337 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,317 psi | 85% | 3353 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,578 psi | 86% | 3386 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 56,956 psi | 89% | 3327 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 3314 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 57,014 psi | 89% | 3425 fps | 99.5% |
| Somchem S335 | <<locked>> | 94% | 56,072 psi | 88% | 3320 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 57,580 psi | 90% | 3415 fps | 98.6% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,359 psi | 84% | 3376 fps | 98.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,305 psi | 60% | 3146 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 82% | 54,534 psi | 85% | 3215 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 56,826 psi | 89% | 3304 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 56,782 psi | 89% | 3314 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 57,363 psi | 90% | 3396 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,869 psi | 88% | 3360 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 3304 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 92% | 56,101 psi | 88% | 3386 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 96% | 53,969 psi | 85% | 3346 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,195 psi | 74% | 3219 fps | 97.4% |
| Winchester 748 | <<locked>> | 92% | 55,434 psi | 87% | 3438 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,418 psi | 85% | 3399 fps | 98.7% |
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% | 38,537 psi | 60% | 3009 fps | 99.7% |
| Accurate 2200 | <<locked>> | 80% | 50,241 psi | 79% | 3320 fps | 96.5% |
| Accurate 2230 | <<locked>> | 80% | 50,778 psi | 80% | 3323 fps | 97% |
| Accurate 2460 | <<locked>> | 80% | 42,047 psi | 66% | 3114 fps | 98.8% |
| Accurate 2495 | <<locked>> | 80% | 30,647 psi | 48% | 2858 fps | 98.6% |
| Accurate 2520 | <<locked>> | 80% | 35,694 psi | 56% | 3005 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 28,993 psi | 45% | 2822 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 47,282 psi | 74% | 3130 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 80% | 47,645 psi | 75% | 3150 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 43,294 psi | 68% | 3173 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 51,605 psi | 81% | 3225 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 44,396 psi | 70% | 3169 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 46,934 psi | 74% | 3245 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,521 psi | 59% | 3009 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 35,984 psi | 56% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,178 psi | 68% | 3238 fps | 96.4% |
| Alliant Power Pro 2000-MR | 44.6 gr | 90% | 45,513 psi | 71% | 3317 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 38,014 psi | 60% | 3064 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,903 psi | 69% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 44,135 psi | 69% | 3209 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 40,901 psi | 64% | 3205 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,460 psi | 82% | 3241 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,340 psi | 73% | 3110 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 45,614 psi | 71% | 3228 fps | 95.2% |
| Bofors RP3 | <<locked>> | 88% | 37,347 psi | 59% | 3058 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,595 psi | 62% | 3018 fps | 96.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,404 psi | 55% | 3002 fps | 95.4% |
| Hodgdon CFE223 | <<locked>> | 84% | 45,339 psi | 71% | 3297 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 42,960 psi | 67% | 3163 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 80% | 43,787 psi | 69% | 3176 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 96% | 51,155 psi | 80% | 3330 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 52,112 psi | 82% | 3245 fps | 100% |
| Hodgdon H4895 | <<locked>> | 84% | 40,915 psi | 64% | 3127 fps | 95.7% |
| Hodgdon LEVERevolution | 41.8 gr | 86% | 39,291 psi | 62% | 3133 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,918 psi | 39% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 39,349 psi | 62% | 3068 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 34,418 psi | 54% | 3015 fps | 98.7% |
| IMR 4064 | <<locked>> | 90% | 43,729 psi | 69% | 3153 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 44,991 psi | 71% | 3127 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 42,090 psi | 66% | 3179 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 37,521 psi | 59% | 3009 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 51,474 psi | 81% | 3314 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 41,771 psi | 65% | 3107 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 80% | 33,344 psi | 52% | 2943 fps | 96% |
| Lovex S060 | <<locked>> | 84% | 41,452 psi | 65% | 3054 fps | 95.3% |
| Lovex S062 | <<locked>> | 86% | 37,855 psi | 59% | 3031 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 49,545 psi | 78% | 3225 fps | 100% |
| Norma 201 | <<locked>> | 82% | 36,970 psi | 58% | 2992 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 34,679 psi | 54% | 2956 fps | 97.2% |
| Norma 203B | <<locked>> | 90% | 43,337 psi | 68% | 3196 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 90% | 43,352 psi | 68% | 3205 fps | 95.6% |
| Ramshot TAC | <<locked>> | 90% | 52,837 psi | 83% | 3320 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 41,901 psi | 66% | 3140 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 43,816 psi | 69% | 3127 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,135 psi | 39% | 1932 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,206 psi | 66% | 3123 fps | 98.1% |
| ReloadSwiss RS 52 | 42.3 gr | 88% | 43,149 psi | 68% | 3261 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,433 psi | 56% | 3074 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 37,884 psi | 59% | 3009 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 84% | 37,492 psi | 59% | 2999 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 92% | 39,827 psi | 62% | 3110 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 51,474 psi | 81% | 3314 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,344 psi | 52% | 2943 fps | 96% |
| Shooters World Precision | <<locked>> | 86% | 37,855 psi | 59% | 3031 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,788 psi | 70% | 3136 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,155 psi | 80% | 2949 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,630 psi | 75% | 3251 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,032 psi | 66% | 3182 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,744 psi | 70% | 3166 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 50,517 psi | 79% | 3284 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 41,887 psi | 66% | 3133 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,506 psi | 57% | 2923 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,718 psi | 47% | 2749 fps | 96.5% |
| Somchem S321 | <<locked>> | 80% | 40,161 psi | 63% | 3094 fps | 96.7% |
| Somchem S335 | <<locked>> | 80% | 35,926 psi | 56% | 2923 fps | 98.3% |
| Somchem S341 | <<locked>> | 86% | 43,395 psi | 68% | 3146 fps | 95.7% |
| Somchem S355 | <<locked>> | 92% | 41,191 psi | 65% | 3130 fps | 95.8% |
| Somchem S365 | <<locked>> | 98% | 35,679 psi | 56% | 3074 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 51,517 psi | 81% | 3169 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,582 psi | 65% | 3038 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,593 psi | 57% | 2936 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 31,575 psi | 49% | 2881 fps | 98.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,764 psi | 51% | 2881 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 88% | 34,447 psi | 54% | 2933 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 37,333 psi | 59% | 2999 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 31,488 psi | 49% | 2854 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,133 psi | 64% | 3081 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 36,056 psi | 56% | 3031 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 86% | 41,205 psi | 65% | 3136 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 89 powders for .25 WSSM loaded with the .257 | 80gr | CutEdge ESP Raptor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,547 fps; across all powders the maximum-charge window runs from 2,110 fps to 3,547 fps. Accurate 4064 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.257" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 .25 WSSM with the .257 | 80gr | CutEdge ESP Raptor 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.