Load Specifications
Load data in caliber .358 STA with .355 | 145gr | Winchester FMJ TC bullet and 91 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, ReloadSwiss RS 52 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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 57,914 psi | 89% | 3392 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 58,334 psi | 90% | 3474 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,317 psi | 85% | 3517 fps | 96.9% |
| Accurate 2230 | <<locked>> | 84% | 56,420 psi | 87% | 3527 fps | 97.5% |
| Accurate 2460 | <<locked>> | 90% | 57,261 psi | 88% | 3494 fps | 99.9% |
| Accurate 2495 | <<locked>> | 98% | 55,303 psi | 85% | 3474 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,027 psi | 85% | 3494 fps | 99.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,679 psi | 84% | 3507 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,347 psi | 85% | 3369 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,767 psi | 86% | 3396 fps | 99.7% |
| ADI APS 450 | <<locked>> | 82% | 58,450 psi | 90% | 2707 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 57,566 psi | 89% | 3553 fps | 98.2% |
| ADI AR 2207 | <<locked>> | 84% | 56,420 psi | 87% | 3409 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,969 psi | 85% | 3474 fps | 97.1% |
| ADI AR 2219 | <<locked>> | 86% | 55,579 psi | 86% | 3504 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 56,927 psi | 88% | 3510 fps | 99% |
| Alliant AR-Comp | <<locked>> | 94% | 55,811 psi | 86% | 3510 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 58,204 psi | 90% | 3645 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 57,537 psi | 89% | 3665 fps | 97.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,809 psi | 83% | 3497 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 90% | 58,247 psi | 90% | 3501 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 58,494 psi | 90% | 3586 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,080 psi | 74% | 3468 fps | 96.9% |
| Alliant Reloder-7 | <<locked>> | 84% | 57,609 psi | 89% | 3428 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 58,262 psi | 90% | 3409 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 57,856 psi | 89% | 3560 fps | 97.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,230 psi | 83% | 3514 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,883 psi | 86% | 3445 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,738 psi | 86% | 3533 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 92% | 57,624 psi | 89% | 3645 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 90% | 57,754 psi | 89% | 3537 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,390 psi | 85% | 3497 fps | 99.9% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,159 psi | 86% | 3517 fps | 96.2% |
| Hodgdon H4198 | <<locked>> | 84% | 57,261 psi | 88% | 3432 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 58,001 psi | 89% | 3570 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 56,579 psi | 87% | 3593 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,866 psi | 52% | 2175 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 56,115 psi | 86% | 3510 fps | 98.4% |
| IMR 3031 | <<locked>> | 96% | 56,507 psi | 87% | 3570 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 57,899 psi | 89% | 3520 fps | 97.8% |
| IMR 4198 | <<locked>> | 90% | 58,363 psi | 90% | 3458 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,115 psi | 86% | 3563 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 94% | 56,927 psi | 88% | 3510 fps | 99% |
| Lovex D073.4 | <<locked>> | 84% | 57,217 psi | 88% | 3514 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 90% | 57,566 psi | 89% | 3501 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 96% | 56,536 psi | 87% | 3530 fps | 99.8% |
| Lovex S053 | <<locked>> | 82% | 58,755 psi | 90% | 3346 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 58,088 psi | 89% | 3478 fps | 98.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 57,014 psi | 88% | 3520 fps | 99.1% |
| Norma 200 | <<locked>> | 86% | 58,320 psi | 90% | 3471 fps | 100% |
| Norma 201 | <<locked>> | 96% | 56,028 psi | 86% | 3494 fps | 99% |
| Norma 202 | <<locked>> | 96% | 56,434 psi | 87% | 3510 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 57,479 psi | 88% | 3573 fps | 98.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 58,624 psi | 90% | 3599 fps | 98.3% |
| Ramshot TAC | <<locked>> | 94% | 58,262 psi | 90% | 3510 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,927 psi | 88% | 3540 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,187 psi | 85% | 3445 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,881 psi | 52% | 2221 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 56,782 psi | 87% | 3507 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 58,407 psi | 90% | 3665 fps | 97.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,445 psi | 79% | 3566 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 94% | 56,811 psi | 87% | 3491 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 98% | 56,275 psi | 87% | 3484 fps | 99% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,256 psi | 77% | 3428 fps | 97.7% |
| Shooters World AR Plus | <<locked>> | 84% | 57,217 psi | 88% | 3514 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 56,536 psi | 87% | 3530 fps | 99.8% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 57,014 psi | 88% | 3520 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 57,363 psi | 88% | 3468 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 58,479 psi | 90% | 3153 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,057 psi | 86% | 3507 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,533 psi | 81% | 3501 fps | 97.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,506 psi | 85% | 3461 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,970 psi | 86% | 3478 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,144 psi | 86% | 3514 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 58,798 psi | 90% | 3451 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,520 psi | 84% | 3379 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 58,769 psi | 90% | 3556 fps | 99.4% |
| Somchem S335 | <<locked>> | 96% | 57,334 psi | 88% | 3442 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,085 psi | 85% | 3471 fps | 97.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,126 psi | 79% | 3432 fps | 97.6% |
| Vihtavuori N120 | <<locked>> | 84% | 56,289 psi | 87% | 3350 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 58,262 psi | 90% | 3432 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 58,334 psi | 90% | 3438 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 58,465 psi | 90% | 3520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 56,971 psi | 88% | 3481 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,487 psi | 76% | 3363 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 94% | 57,798 psi | 89% | 3514 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 98% | 55,274 psi | 85% | 3471 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,614 psi | 70% | 3268 fps | 96.3% |
| Winchester 748 | <<locked>> | 94% | 56,579 psi | 87% | 3563 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,695 psi | 86% | 3524 fps | 98.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 54,331 psi | 84% | 3337 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 37,362 psi | 57% | 3077 fps | 99.4% |
| Accurate 2200 | <<locked>> | 80% | 48,341 psi | 74% | 3379 fps | 95.4% |
| Accurate 2230 | <<locked>> | 80% | 48,892 psi | 75% | 3383 fps | 96% |
| Accurate 2460 | <<locked>> | 80% | 40,567 psi | 62% | 3173 fps | 98% |
| Accurate 2495 | <<locked>> | 80% | 29,979 psi | 46% | 2930 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 36,013 psi | 55% | 3097 fps | 96.4% |
| Accurate 4064 | <<locked>> | 82% | 30,240 psi | 47% | 2953 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 45,992 psi | 71% | 3202 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 80% | 46,340 psi | 71% | 3215 fps | 98.7% |
| ADI APS 450 | <<locked>> | 80% | 56,521 psi | 87% | 2677 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 44,570 psi | 69% | 3297 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 49,879 psi | 77% | 3307 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 48,573 psi | 75% | 3353 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 45,179 psi | 70% | 3310 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 38,812 psi | 60% | 3133 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 34,563 psi | 53% | 3104 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,510 psi | 64% | 3297 fps | 95.3% |
| Alliant Power Pro 2000-MR | 88.7 gr | 94% | 50,009 psi | 77% | 3514 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 41,539 psi | 64% | 3245 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,569 psi | 65% | 3219 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 45,092 psi | 69% | 3327 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 98% | 44,889 psi | 69% | 3392 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,894 psi | 78% | 3320 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,947 psi | 69% | 3179 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 50,256 psi | 77% | 3422 fps | 95.7% |
| Bofors RP3 | <<locked>> | 92% | 41,075 psi | 63% | 3245 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,522 psi | 59% | 3081 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 36,651 psi | 56% | 3130 fps | 95.2% |
| Hodgdon CFE223 | <<locked>> | 86% | 46,543 psi | 72% | 3422 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 41,191 psi | 63% | 3222 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 80% | 42,134 psi | 65% | 3238 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 98% | 52,504 psi | 81% | 3451 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 50,633 psi | 78% | 3317 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 86% | 42,003 psi | 65% | 3248 fps | 95.4% |
| Hodgdon LEVERevolution | 81.5 gr | 88% | 40,379 psi | 62% | 3255 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,990 psi | 38% | 1949 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 43,294 psi | 67% | 3258 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 32,982 psi | 51% | 3071 fps | 97.9% |
| IMR 4064 | <<locked>> | 92% | 44,918 psi | 69% | 3271 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 43,381 psi | 67% | 3199 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 43,366 psi | 67% | 3307 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 82% | 38,812 psi | 60% | 3133 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 49,574 psi | 76% | 3379 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 40,495 psi | 62% | 3169 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 82% | 34,650 psi | 53% | 3071 fps | 95.8% |
| Lovex S053 | <<locked>> | 80% | 55,419 psi | 85% | 3297 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 42,685 psi | 66% | 3173 fps | 95% |
| Lovex S062 | <<locked>> | 88% | 39,088 psi | 60% | 3153 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 48,211 psi | 74% | 3304 fps | 100% |
| Norma 201 | <<locked>> | 84% | 38,319 psi | 59% | 3120 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 33,518 psi | 52% | 3018 fps | 96.2% |
| Norma 203B | <<locked>> | 92% | 44,280 psi | 68% | 3314 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 92% | 44,411 psi | 68% | 3323 fps | 95.2% |
| Ramshot TAC | <<locked>> | 92% | 54,491 psi | 84% | 3445 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 43,250 psi | 67% | 3268 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 84% | 45,382 psi | 70% | 3251 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,135 psi | 39% | 1995 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,886 psi | 63% | 3189 fps | 97.3% |
| ReloadSwiss RS 52 | 84.2 gr | 92% | 47,253 psi | 73% | 3451 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 36,709 psi | 56% | 3196 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 37,275 psi | 57% | 3084 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 86% | 38,754 psi | 60% | 3120 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 94% | 40,973 psi | 63% | 3232 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 49,574 psi | 76% | 3379 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 34,650 psi | 53% | 3071 fps | 95.8% |
| Shooters World Precision | <<locked>> | 88% | 39,088 psi | 60% | 3153 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,323 psi | 67% | 3199 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,096 psi | 77% | 3031 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,847 psi | 71% | 3314 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 46,035 psi | 71% | 3369 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,004 psi | 66% | 3228 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 52,199 psi | 80% | 3409 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 43,047 psi | 66% | 3251 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,389 psi | 54% | 2982 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,761 psi | 44% | 2805 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 38,885 psi | 60% | 3153 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 34,998 psi | 54% | 2986 fps | 97.6% |
| Somchem S341 | <<locked>> | 88% | 44,730 psi | 69% | 3271 fps | 95.4% |
| Somchem S355 | <<locked>> | 94% | 42,192 psi | 65% | 3245 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 49,821 psi | 77% | 3248 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,219 psi | 62% | 3107 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 35,331 psi | 54% | 2999 fps | 99% |
| Vihtavuori N135 | <<locked>> | 80% | 30,414 psi | 47% | 2943 fps | 98% |
| Vihtavuori N140 | <<locked>> | 80% | 31,676 psi | 49% | 2940 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 92% | 37,797 psi | 58% | 3110 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 82% | 38,711 psi | 60% | 3127 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 82% | 32,590 psi | 50% | 2976 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 42,612 psi | 66% | 3199 fps | 95.3% |
| Winchester 748 | <<locked>> | 82% | 37,405 psi | 58% | 3163 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 42,264 psi | 65% | 3251 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 91 powders for .358 STA loaded with the .355 | 145gr | Winchester FMJ TC. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,665 fps; across all powders the maximum-charge window runs from 2,175 fps to 3,665 fps. Accurate 4064 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .358 STA with the .355 | 145gr | Winchester FMJ TC 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.