Load Specifications
Load data in caliber .243 WSSM with .243 | 76gr | Norma Tipstrike bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
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>> | 86% | 57,232 psi | 90% | 3291 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,434 psi | 87% | 3307 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,608 psi | 87% | 3304 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,114 psi | 85% | 3320 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 55,898 psi | 88% | 3356 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3428 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 88% | 56,202 psi | 88% | 3386 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 57,261 psi | 90% | 3383 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,288 psi | 87% | 3340 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 55,912 psi | 88% | 3320 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,826 psi | 89% | 3461 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,275 psi | 88% | 3517 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,913 psi | 89% | 3402 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,363 psi | 90% | 3409 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,521 psi | 89% | 3297 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,578 psi | 86% | 3373 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,490 psi | 84% | 3428 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,752 psi | 86% | 3474 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,232 psi | 60% | 3100 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,275 psi | 88% | 3396 fps | 99% |
| Bofors RP3 | <<locked>> | 92% | 54,288 psi | 85% | 3363 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,058 psi | 89% | 3323 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,795 psi | 86% | 3363 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,811 psi | 89% | 3478 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 82% | 55,782 psi | 87% | 3340 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,898 psi | 89% | 3363 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,506 psi | 87% | 3376 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 98% | 55,303 psi | 87% | 3422 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 56,782 psi | 89% | 3402 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,690 psi | 78% | 3291 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,376 psi | 88% | 3432 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 56,318 psi | 88% | 3455 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 55% | 2119 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,708 psi | 86% | 3346 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 56,449 psi | 88% | 3389 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,710 psi | 89% | 3366 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,203 psi | 90% | 3340 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 56,260 psi | 88% | 3255 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,637 psi | 89% | 3356 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,692 psi | 83% | 3353 fps | 98.5% |
| IMR 4895 | <<locked>> | 90% | 55,970 psi | 88% | 3415 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 86% | 55,288 psi | 87% | 3340 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 55,535 psi | 87% | 3320 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,289 psi | 88% | 3366 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,782 psi | 87% | 3307 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 56,507 psi | 89% | 3363 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,072 psi | 88% | 3353 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 3386 fps | 96.9% |
| Norma 201 | <<locked>> | 88% | 54,853 psi | 86% | 3327 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 55,695 psi | 87% | 3340 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,217 psi | 90% | 3419 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 54,781 psi | 86% | 3412 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 90% | 54,317 psi | 85% | 3383 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,693 psi | 84% | 3396 fps | 97% |
| Ramshot TAC | <<locked>> | 86% | 55,767 psi | 87% | 3343 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,259 psi | 87% | 3369 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,376 psi | 88% | 3333 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,665 psi | 56% | 2169 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,752 psi | 86% | 3320 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,985 psi | 88% | 3350 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,882 psi | 86% | 3448 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,389 psi | 85% | 3481 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3445 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3474 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 86% | 55,840 psi | 88% | 3320 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,651 psi | 87% | 3330 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 94% | 54,143 psi | 85% | 3350 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,072 psi | 88% | 3353 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,289 psi | 88% | 3366 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,507 psi | 89% | 3363 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 3386 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,086 psi | 88% | 3419 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,508 psi | 90% | 3330 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,201 psi | 85% | 3320 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,984 psi | 86% | 3353 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,565 psi | 89% | 3271 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,666 psi | 89% | 3258 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,739 psi | 89% | 3297 fps | 96.5% |
| Somchem S321 | <<locked>> | 84% | 56,652 psi | 89% | 3373 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,811 psi | 87% | 3264 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,435 psi | 90% | 3373 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 54,781 psi | 86% | 3356 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,950 psi | 77% | 3350 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 56,014 psi | 88% | 3235 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,695 psi | 89% | 3255 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,114 psi | 86% | 3297 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,159 psi | 88% | 3310 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,449 psi | 88% | 3337 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3412 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 55,738 psi | 87% | 3333 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 54,563 psi | 86% | 3304 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,565 psi | 89% | 3415 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,611 psi | 65% | 3189 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,418 psi | 85% | 3327 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 55,912 psi | 88% | 3392 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,303 psi | 87% | 3422 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,549 psi | 85% | 3356 fps | 99.7% |
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% | 47,282 psi | 74% | 3127 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,083 psi | 82% | 3255 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,987 psi | 63% | 3025 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,949 psi | 74% | 3192 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 37,768 psi | 59% | 3005 fps | 99.4% |
| Accurate 4350 | <<locked>> | 90% | 39,305 psi | 62% | 3091 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 43,555 psi | 68% | 3136 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 39,421 psi | 62% | 3018 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,629 psi | 72% | 3153 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 45,672 psi | 72% | 3159 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,287 psi | 84% | 3399 fps | 99.5% |
| Alliant Power Pro 2000-MR | 39.6 gr | 80% | 39,552 psi | 62% | 3143 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,092 psi | 69% | 3153 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,564 psi | 57% | 2979 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,040 psi | 83% | 3245 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,320 psi | 62% | 3051 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,117 psi | 61% | 3104 fps | 95% |
| Alliant Reloder-17 | 41 gr | 84% | 36,332 psi | 57% | 3058 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 35,926 psi | 56% | 3035 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,757 psi | 67% | 3130 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 36,143 psi | 57% | 2976 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,282 psi | 74% | 3146 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,454 psi | 70% | 3169 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,269 psi | 77% | 3337 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 52,301 psi | 82% | 3284 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,156 psi | 83% | 3301 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 42,467 psi | 67% | 3110 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 96% | 51,445 psi | 81% | 3350 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 43,947 psi | 69% | 3150 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 35,868 psi | 56% | 2979 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,089 psi | 63% | 3107 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 96% | 52,460 psi | 82% | 3383 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 41% | 1896 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,264 psi | 66% | 3097 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 43,236 psi | 68% | 3156 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,812 psi | 61% | 2999 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,256 psi | 79% | 3212 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 53,142 psi | 83% | 3205 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,330 psi | 84% | 3301 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 40,335 psi | 63% | 3097 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 40,248 psi | 63% | 3091 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 45,629 psi | 72% | 3153 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 51,793 psi | 81% | 3255 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 42,540 psi | 67% | 3114 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 43,685 psi | 68% | 3071 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 38,754 psi | 61% | 3005 fps | 97.7% |
| Lovex S065 | <<locked>> | 92% | 46,586 psi | 73% | 3169 fps | 95.7% |
| Lovex S070 | <<locked>> | 96% | 50,343 psi | 79% | 3261 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 42,699 psi | 67% | 3087 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 42,975 psi | 67% | 3104 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 38,682 psi | 61% | 3038 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 41,930 psi | 66% | 3153 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 38,189 psi | 60% | 3041 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 96% | 47,050 psi | 74% | 3264 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 45,672 psi | 72% | 3146 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,976 psi | 70% | 3169 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,356 psi | 77% | 3205 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,484 psi | 42% | 1946 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,082 psi | 80% | 3258 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,139 psi | 77% | 3222 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,118 psi | 64% | 3166 fps | 96.3% |
| ReloadSwiss RS 60 | 39 gr | 80% | 33,649 psi | 53% | 2995 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 41,742 psi | 65% | 3169 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 45,223 psi | 71% | 3258 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 46,412 psi | 73% | 3146 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 40,683 psi | 64% | 3031 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 34,011 psi | 53% | 2913 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 46,586 psi | 73% | 3169 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,540 psi | 67% | 3114 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 38,754 psi | 61% | 3005 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 96% | 50,343 psi | 79% | 3261 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 37,550 psi | 59% | 3031 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,867 psi | 84% | 3271 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,888 psi | 69% | 3114 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,105 psi | 66% | 3094 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,048 psi | 69% | 3051 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,579 psi | 57% | 2887 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,837 psi | 83% | 3232 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 49,414 psi | 77% | 3241 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 43,714 psi | 69% | 3048 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,584 psi | 68% | 3114 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 34,911 psi | 55% | 2923 fps | 95.5% |
| Somchem S365 | <<locked>> | 86% | 30,821 psi | 48% | 2894 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 49,763 psi | 78% | 3133 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,324 psi | 69% | 3048 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,958 psi | 63% | 3025 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,640 psi | 64% | 3025 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 33,156 psi | 52% | 2851 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 41,278 psi | 65% | 3097 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 45,716 psi | 72% | 3150 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 39,204 psi | 61% | 3005 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 90% | 40,654 psi | 64% | 3094 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 38,914 psi | 61% | 3127 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,808 psi | 53% | 2871 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 45,237 psi | 71% | 3196 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 51,837 psi | 81% | 3356 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,553 psi | 65% | 3097 fps | 97.7% |
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 111 powders for .243 WSSM loaded with the .243 | 76gr | Norma Tipstrike. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,517 fps; across all powders the maximum-charge window runs from 2,119 fps to 3,517 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 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 76.0 gr projectile in 0.243" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .243 WSSM with the .243 | 76gr | Norma Tipstrike they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.