Load Specifications
Load data in caliber .243 Win. with .243 | 90gr | SUS-TAC HPT bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Alliant Reloder-17.
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 2495 | <<locked>> | 86% | 54,462 psi | 90% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,258 psi | 88% | 2917 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,818 psi | 76% | 2871 fps | 97.3% |
| Accurate 4064 | <<locked>> | 86% | 51,242 psi | 85% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 51,590 psi | 86% | 3002 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 82% | 51,097 psi | 85% | 2949 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 52,301 psi | 87% | 2953 fps | 99.7% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,432 psi | 89% | 3031 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,287 psi | 89% | 2953 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,230 psi | 90% | 2927 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 50,879 psi | 85% | 3061 fps | 99.7% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,098 psi | 88% | 3028 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 52,591 psi | 87% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,113 psi | 88% | 2999 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,402 psi | 87% | 3061 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,969 psi | 90% | 3100 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,315 psi | 87% | 3018 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,062 psi | 72% | 2897 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,327 psi | 82% | 3081 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 50,778 psi | 84% | 2956 fps | 99.4% |
| Bofors RP3 | <<locked>> | 88% | 53,447 psi | 89% | 2992 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,011 psi | 88% | 2953 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,200 psi | 88% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,099 psi | 90% | 3002 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 54,012 psi | 90% | 3051 fps | 98% |
| Hodgdon H4350 | <<locked>> | 92% | 54,331 psi | 90% | 3012 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 82% | 51,663 psi | 86% | 2963 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,475 psi | 87% | 2986 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 51,285 psi | 85% | 2992 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,024 psi | 85% | 3022 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 59% | 1906 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 52,939 psi | 88% | 2966 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 51,735 psi | 86% | 2949 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 51,924 psi | 86% | 2940 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 51,271 psi | 85% | 2907 fps | 97.3% |
| IMR 4350 | <<locked>> | 96% | 53,751 psi | 89% | 2982 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 51,503 psi | 86% | 2933 fps | 97.3% |
| IMR 4831 | <<locked>> | 96% | 52,272 psi | 87% | 2995 fps | 99.5% |
| IMR 4895 | <<locked>> | 84% | 50,981 psi | 85% | 2976 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 53,287 psi | 89% | 2953 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 51,010 psi | 85% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,824 psi | 89% | 2930 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 51,605 psi | 86% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 51,329 psi | 85% | 2930 fps | 98.5% |
| Lovex S070 | <<locked>> | 94% | 52,330 psi | 87% | 2966 fps | 97.8% |
| Norma 201 | <<locked>> | 84% | 53,345 psi | 89% | 2953 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,882 psi | 90% | 2949 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,388 psi | 87% | 2986 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 54,462 psi | 90% | 3031 fps | 96.3% |
| Norma MRPᴾ | <<locked>> | 100% | 48,646 psi | 81% | 3031 fps | 96.9% |
| Norma URP | <<locked>> | 96% | 54,114 psi | 90% | 3048 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 52,779 psi | 88% | 3002 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 52,924 psi | 88% | 3035 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 53,563 psi | 89% | 2966 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,563 psi | 89% | 2989 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,042 psi | 60% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,273 psi | 90% | 2982 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,476 psi | 89% | 3061 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,200 psi | 88% | 3094 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,227 psi | 85% | 3018 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,375 psi | 90% | 3107 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 54,041 psi | 90% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,809 psi | 89% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,243 psi | 88% | 2982 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,256 psi | 85% | 2999 fps | 96% |
| Rottweil R 907 | <<locked>> | 92% | 53,011 psi | 88% | 2953 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 51,329 psi | 85% | 2930 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 51,010 psi | 85% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 51,605 psi | 86% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,330 psi | 87% | 2966 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 51,430 psi | 85% | 2986 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,083 psi | 87% | 2943 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,084 psi | 88% | 2972 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,462 psi | 90% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 51,576 psi | 86% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,430 psi | 85% | 2881 fps | 97.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,763 psi | 84% | 2992 fps | 95.9% |
| Somchem S335 | <<locked>> | 84% | 54,099 psi | 90% | 2884 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 51,677 psi | 86% | 2933 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 53,635 psi | 89% | 2982 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,576 psi | 87% | 3048 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,098 psi | 87% | 2979 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 82% | 51,648 psi | 86% | 2828 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,664 psi | 89% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,126 psi | 85% | 2881 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 51,503 psi | 86% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 52,997 psi | 88% | 2986 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 53,751 psi | 89% | 2953 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 52,866 psi | 88% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,257 psi | 87% | 2992 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,848 psi | 79% | 2976 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,040 psi | 88% | 2956 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,070 psi | 90% | 2999 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,418 psi | 90% | 3054 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,870 psi | 65% | 2917 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,069 psi | 88% | 2979 fps | 100% |
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 2495 | <<locked>> | 80% | 44,846 psi | 75% | 2782 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,731 psi | 78% | 2805 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 39,682 psi | 66% | 2753 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,395 psi | 70% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,663 psi | 56% | 2648 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,848 psi | 79% | 2894 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 40,698 psi | 68% | 2740 fps | 98% |
| ADI AR 2209 | <<locked>> | 98% | 49,922 psi | 83% | 2972 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,893 psi | 83% | 2897 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,923 psi | 85% | 2884 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,048 psi | 73% | 2933 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 49,632 psi | 82% | 2966 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,785 psi | 68% | 2766 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,497 psi | 72% | 2828 fps | 98.7% |
| Alliant Reloder-16 | 35 gr | 82% | 33,678 psi | 56% | 2661 fps | 95.3% |
| Alliant Reloder-17 | 36.8 gr | 80% | 35,505 psi | 59% | 2736 fps | 97.9% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,936 psi | 81% | 2959 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,457 psi | 49% | 2559 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,724 psi | 61% | 2808 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,529 psi | 79% | 2900 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 40,553 psi | 67% | 2769 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 46,804 psi | 78% | 2844 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,443 psi | 82% | 2923 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,321 psi | 69% | 2772 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 44,034 psi | 73% | 2871 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 47,950 psi | 80% | 2900 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 48,312 psi | 80% | 2904 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,979 psi | 48% | 2500 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,744 psi | 74% | 2877 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 43,888 psi | 73% | 2887 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 44% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,325 psi | 77% | 2854 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 48,573 psi | 81% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,743 psi | 71% | 2776 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,295 psi | 75% | 2795 fps | 95.9% |
| IMR 4350 | <<locked>> | 90% | 44,425 psi | 74% | 2818 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,699 psi | 71% | 2766 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 34,780 psi | 58% | 2657 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 44,585 psi | 74% | 2861 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 49,893 psi | 83% | 2897 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,645 psi | 79% | 2874 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,601 psi | 79% | 2828 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 42,873 psi | 71% | 2779 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 37,463 psi | 62% | 2661 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 43,221 psi | 72% | 2799 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,036 psi | 78% | 2848 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 47,485 psi | 79% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,859 psi | 71% | 2815 fps | 99% |
| Norma 204 | <<locked>> | 94% | 50,850 psi | 84% | 2969 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 42,453 psi | 71% | 2904 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 33,794 psi | 56% | 2648 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 42,801 psi | 71% | 2828 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 40,451 psi | 67% | 2805 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 50,227 psi | 83% | 2910 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,806 psi | 83% | 2930 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,818 psi | 45% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,452 psi | 69% | 2749 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,470 psi | 77% | 2943 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,753 psi | 63% | 2805 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,810 psi | 59% | 2717 fps | 95.7% |
| ReloadSwiss RS 70 | 40.1 gr | 86% | 38,232 psi | 64% | 2785 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 50,952 psi | 85% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,701 psi | 74% | 2799 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,290 psi | 64% | 2713 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 98% | 47,790 psi | 79% | 2940 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 88% | 46,804 psi | 78% | 2844 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,463 psi | 62% | 2661 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,645 psi | 79% | 2874 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,873 psi | 71% | 2779 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 43,221 psi | 72% | 2799 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,262 psi | 65% | 2759 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,718 psi | 81% | 2884 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,586 psi | 77% | 2861 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,877 psi | 80% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,089 psi | 67% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,003 psi | 70% | 2710 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,326 psi | 79% | 2933 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,848 psi | 79% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,399 psi | 80% | 2877 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 38,899 psi | 65% | 2717 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 28,297 psi | 47% | 2536 fps | 96.5% |
| Somchem S385 | <<locked>> | 96% | 45,484 psi | 76% | 2864 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 48,283 psi | 80% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,237 psi | 73% | 2772 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,034 psi | 75% | 2782 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,086 psi | 62% | 2651 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 35,288 psi | 59% | 2651 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 50,241 psi | 83% | 2897 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,424 psi | 72% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,896 psi | 58% | 2651 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 31,966 psi | 53% | 2641 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,808 psi | 55% | 2566 fps | 97.1% |
| Winchester 748 | <<locked>> | 80% | 50,531 psi | 84% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,396 psi | 74% | 2877 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,776 psi | 49% | 2644 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,108 psi | 77% | 2864 fps | 99.7% |
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 96 powders for .243 Win. loaded with the .243 | 90gr | SUS-TAC HPT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,906 fps to 3,107 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 Reloder-16, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .243 Win. with the .243 | 90gr | 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.