Load Specifications
Load data in caliber .243 WSSM with .243 | 66gr | SUS-TAC HPT bullet and 89 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 60 and ReloadSwiss RS 52.
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% | 55,637 psi | 87% | 3474 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,940 psi | 85% | 3481 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,319 psi | 90% | 3537 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,173 psi | 88% | 3553 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 56,913 psi | 89% | 3576 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,197 psi | 77% | 3488 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 82% | 54,491 psi | 85% | 3409 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,853 psi | 86% | 3435 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 90% | 54,781 psi | 86% | 3553 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 96% | 55,970 psi | 88% | 3543 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 82% | 55,738 psi | 87% | 3547 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,493 psi | 90% | 3570 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 90% | 57,377 psi | 90% | 3560 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,245 psi | 87% | 3635 fps | 99% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,447 psi | 85% | 3665 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,172 psi | 86% | 3566 fps | 99.2% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,172 psi | 86% | 3491 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,927 psi | 88% | 3589 fps | 98.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,269 psi | 76% | 3494 fps | 96.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,521 psi | 89% | 3694 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,969 psi | 85% | 3386 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,911 psi | 86% | 3556 fps | 97.7% |
| Bofors RP3 | <<locked>> | 96% | 56,246 psi | 88% | 3589 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,796 psi | 87% | 3497 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,797 psi | 89% | 3593 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,607 psi | 86% | 3635 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 84% | 54,186 psi | 85% | 3520 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,898 psi | 88% | 3547 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,377 psi | 90% | 3593 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 90% | 55,332 psi | 87% | 3570 fps | 99% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,353 psi | 70% | 3353 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,244 psi | 85% | 3593 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 54% | 2254 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,869 psi | 89% | 3576 fps | 99.1% |
| IMR 3031 | <<locked>> | 90% | 54,607 psi | 86% | 3573 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,969 psi | 86% | 3524 fps | 98.2% |
| IMR 4198 | <<locked>> | 84% | 54,926 psi | 86% | 3448 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 57,406 psi | 90% | 3635 fps | 99% |
| IMR 8208 XBR | <<locked>> | 90% | 57,493 psi | 90% | 3570 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 84% | 53,954 psi | 85% | 3488 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 90% | 53,940 psi | 85% | 3524 fps | 99.9% |
| Lovex S060 | <<locked>> | 90% | 54,563 psi | 86% | 3474 fps | 98.5% |
| Lovex S062 | <<locked>> | 94% | 54,549 psi | 85% | 3520 fps | 99.4% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3494 fps | 95.9% |
| Norma 201 | <<locked>> | 92% | 56,971 psi | 89% | 3560 fps | 99.6% |
| Norma 202 | <<locked>> | 92% | 57,377 psi | 90% | 3570 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,085 psi | 86% | 3576 fps | 98.6% |
| Norma URPᴾ | <<locked>> | 100% | 48,776 psi | 76% | 3478 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 94% | 56,086 psi | 88% | 3599 fps | 98.7% |
| Ramshot TAC | <<locked>> | 88% | 54,447 psi | 85% | 3501 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,421 psi | 90% | 3596 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,216 psi | 87% | 3501 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,795 psi | 55% | 2303 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,029 psi | 89% | 3556 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,217 psi | 88% | 3668 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,202 psi | 88% | 3707 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,298 psi | 77% | 3510 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 88% | 54,302 psi | 85% | 3494 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,450 psi | 90% | 3553 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 98% | 55,608 psi | 87% | 3566 fps | 99.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3494 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 53,940 psi | 85% | 3524 fps | 99.9% |
| Shooters World Precision | <<locked>> | 94% | 54,549 psi | 85% | 3520 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,913 psi | 89% | 3517 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,580 psi | 90% | 3189 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,333 psi | 88% | 3553 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,983 psi | 85% | 3570 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,651 psi | 87% | 3510 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,449 psi | 88% | 3537 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,855 psi | 89% | 3576 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,317 psi | 87% | 3448 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,143 psi | 86% | 3432 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,550 psi | 87% | 3547 fps | 99.6% |
| Somchem S335 | <<locked>> | 90% | 54,679 psi | 86% | 3442 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,101 psi | 88% | 3537 fps | 98.7% |
| Somchem S355 | <<locked>> | 98% | 56,101 psi | 88% | 3570 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,656 psi | 68% | 3415 fps | 98.3% |
| Vihtavuori N130 | <<locked>> | 86% | 54,824 psi | 86% | 3419 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,259 psi | 87% | 3438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,594 psi | 89% | 3527 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,230 psi | 85% | 3478 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,273 psi | 85% | 3491 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,401 psi | 81% | 3484 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 88% | 54,520 psi | 85% | 3507 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 94% | 56,420 psi | 88% | 3527 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,618 psi | 79% | 3484 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,127 psi | 83% | 3474 fps | 98.9% |
| Winchester 748 | <<locked>> | 90% | 57,609 psi | 90% | 3619 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,652 psi | 89% | 3583 fps | 99.2% |
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% | 43,004 psi | 67% | 3238 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,166 psi | 74% | 3353 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 35,607 psi | 56% | 3107 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 42,134 psi | 66% | 3278 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 33,649 psi | 53% | 3074 fps | 97.4% |
| Accurate 4350 | <<locked>> | 98% | 45,876 psi | 72% | 3419 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 51,169 psi | 80% | 3350 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,532 psi | 81% | 3376 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 42,148 psi | 66% | 3284 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 43,308 psi | 68% | 3284 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 51,880 psi | 81% | 3481 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,568 psi | 65% | 3241 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 80% | 40,741 psi | 64% | 3268 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,124 psi | 75% | 3494 fps | 97.8% |
| Alliant Power Pro 2000-MR | 42.7 gr | 86% | 44,077 psi | 69% | 3428 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 37,376 psi | 59% | 3173 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,501 psi | 76% | 3373 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,207 psi | 68% | 3323 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,353 psi | 71% | 3425 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 90% | 39,972 psi | 63% | 3317 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,575 psi | 79% | 3327 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,672 psi | 70% | 3346 fps | 95.2% |
| Bofors RP3 | <<locked>> | 84% | 37,028 psi | 58% | 3173 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,453 psi | 68% | 3248 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,987 psi | 63% | 3248 fps | 97.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,034 psi | 69% | 3409 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 47,572 psi | 75% | 3399 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,631 psi | 76% | 3412 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 46,978 psi | 74% | 3386 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,827 psi | 62% | 3232 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 38,972 psi | 61% | 3222 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 38,305 psi | 60% | 3238 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 40% | 2024 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,406 psi | 60% | 3176 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 38,624 psi | 61% | 3248 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 42,670 psi | 67% | 3264 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 48,965 psi | 77% | 3346 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 41,524 psi | 65% | 3297 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 41,568 psi | 65% | 3241 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 80% | 46,891 psi | 73% | 3350 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,029 psi | 60% | 3189 fps | 97.7% |
| Lovex S060 | <<locked>> | 80% | 40,118 psi | 63% | 3159 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 37,333 psi | 59% | 3143 fps | 95.7% |
| Lovex S065 | <<locked>> | 98% | 50,763 psi | 80% | 3428 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 38,783 psi | 61% | 3169 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 38,870 psi | 61% | 3192 fps | 98.5% |
| Norma 203B | <<locked>> | 84% | 39,885 psi | 63% | 3241 fps | 95% |
| Norma URP | <<locked>> | 98% | 45,701 psi | 72% | 3412 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 86% | 42,322 psi | 66% | 3317 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 50,952 psi | 80% | 3428 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,988 psi | 64% | 3251 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,208 psi | 71% | 3297 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,773 psi | 40% | 2067 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,615 psi | 73% | 3360 fps | 99.1% |
| ReloadSwiss RS 52 | 41.4 gr | 86% | 45,353 psi | 71% | 3448 fps | 96% |
| ReloadSwiss RS 60 | 41.1 gr | 84% | 34,838 psi | 55% | 3186 fps | 96% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 45,861 psi | 72% | 3435 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 42,366 psi | 66% | 3248 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 36,927 psi | 58% | 3110 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 88% | 39,740 psi | 62% | 3235 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 50,763 psi | 80% | 3428 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,029 psi | 60% | 3189 fps | 97.7% |
| Shooters World Precision | <<locked>> | 82% | 37,333 psi | 59% | 3143 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,400 psi | 77% | 3376 fps | 98.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,491 psi | 85% | 3143 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,620 psi | 82% | 3488 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,321 psi | 65% | 3301 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,197 psi | 77% | 3396 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,008 psi | 77% | 3396 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,901 psi | 64% | 3238 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,306 psi | 63% | 3150 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,199 psi | 52% | 2969 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 44,846 psi | 70% | 3333 fps | 98.1% |
| Somchem S335 | <<locked>> | 80% | 39,929 psi | 63% | 3150 fps | 99.2% |
| Somchem S341 | <<locked>> | 82% | 42,148 psi | 66% | 3255 fps | 95.7% |
| Somchem S355 | <<locked>> | 86% | 38,058 psi | 60% | 3179 fps | 95% |
| Somchem S365 | <<locked>> | 94% | 35,708 psi | 56% | 3202 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 45,701 psi | 72% | 3258 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,451 psi | 63% | 3159 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 35,810 psi | 56% | 3117 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 36,724 psi | 58% | 3110 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 33,924 psi | 53% | 3038 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 96% | 45,107 psi | 71% | 3356 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,524 psi | 65% | 3238 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 35,447 psi | 56% | 3087 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 98% | 47,442 psi | 74% | 3419 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,364 psi | 63% | 3199 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 40,596 psi | 64% | 3278 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 40,118 psi | 63% | 3238 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 89 powders for .243 WSSM loaded with the .243 | 66gr | SUS-TAC HPT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,707 fps; across all powders the maximum-charge window runs from 2,254 fps to 3,707 fps. Accurate 4350 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 54–90 %, leaving at least 10 % headroom. The 66.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 60, ReloadSwiss RS 52 rank at the top here: for .243 WSSM with the .243 | 66gr | SUS-TAC HPT 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.