Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:97 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Caliber:.243 Ackley Improved load data
Case Length (l3):2.045"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:57 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:55,259 psi
Recommended Twist Rate:1:7.0
Load data in caliber .243 Ackley Improved with .243 | 97gr | Peregrine Glider GRM bullet and 134 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 48,689 psi | 88% | 2848 fps | 100% |
| Accurate 2495 | <<locked>> | 82% | 49,240 psi | 89% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,950 psi | 87% | 2848 fps | 96.4% |
| Accurate 2700 | <<locked>> | 82% | 48,022 psi | 87% | 2854 fps | 96.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,166 psi | 85% | 2923 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,529 psi | 86% | 2933 fps | 98.1% |
| Accurate 4064 | <<locked>> | 84% | 49,211 psi | 89% | 2904 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 49,719 psi | 90% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 49,603 psi | 90% | 2992 fps | 99.5% |
| Accurate 4350 | <<locked>> | 90% | 46,688 psi | 84% | 2943 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 84% | 47,413 psi | 86% | 2881 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 84% | 47,834 psi | 87% | 2890 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 49,081 psi | 89% | 3051 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 49,559 psi | 90% | 3061 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 47,543 psi | 86% | 2904 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 48,008 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 48,066 psi | 87% | 2927 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 48,182 psi | 87% | 2930 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 47,819 psi | 87% | 3002 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 92% | 48,225 psi | 87% | 3012 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 48,269 psi | 87% | 3025 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 48,689 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,512 psi | 81% | 2949 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,860 psi | 81% | 2959 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,117 psi | 71% | 2848 fps | 96.6% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,421 psi | 71% | 2858 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 47,065 psi | 85% | 3074 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 47,805 psi | 87% | 3091 fps | 99.4% |
| Bofors RP3 | <<locked>> | 84% | 47,921 psi | 87% | 2920 fps | 100% |
| Bofors RP3 | <<locked>> | 84% | 48,037 psi | 87% | 2923 fps | 100% |
| Bofors RP7 | <<locked>> | 88% | 47,979 psi | 87% | 2887 fps | 96.7% |
| Bofors RP7 | <<locked>> | 88% | 48,399 psi | 88% | 2897 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 84% | 48,631 psi | 88% | 2930 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 49,081 psi | 89% | 2940 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 90% | 48,733 psi | 88% | 2982 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 90% | 49,168 psi | 89% | 2992 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 88% | 49,255 psi | 89% | 2949 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 88% | 49,690 psi | 90% | 2959 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 47,659 psi | 86% | 2930 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 48,080 psi | 87% | 2940 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 49,574 psi | 90% | 2976 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 48,704 psi | 88% | 3012 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 90% | 49,066 psi | 89% | 3022 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 65% | 1886 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 65% | 1890 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 49,850 psi | 90% | 2917 fps | 99.8% |
| IMR 4064 | <<locked>> | 82% | 47,181 psi | 85% | 2871 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 49,458 psi | 90% | 2890 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 49,908 psi | 90% | 2904 fps | 97.7% |
| IMR 4350 | <<locked>> | 92% | 48,950 psi | 89% | 2927 fps | 97% |
| IMR 4350 | <<locked>> | 92% | 48,994 psi | 89% | 2930 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 88% | 49,951 psi | 90% | 2927 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 47,297 psi | 86% | 2881 fps | 97% |
| IMR 4831 | <<locked>> | 92% | 47,050 psi | 85% | 2930 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 47,500 psi | 86% | 2940 fps | 99.3% |
| IMR 4895 | <<locked>> | 82% | 49,313 psi | 89% | 2959 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 49,429 psi | 89% | 2963 fps | 99.9% |
| Lovex S062 | <<locked>> | 84% | 49,864 psi | 90% | 2917 fps | 100% |
| Lovex S062 | <<locked>> | 82% | 47,210 psi | 85% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 49,559 psi | 90% | 2923 fps | 98.7% |
| Lovex S065 | <<locked>> | 90% | 49,980 psi | 90% | 2933 fps | 98.8% |
| Lovex S070 | <<locked>> | 90% | 47,224 psi | 85% | 2897 fps | 97.3% |
| Lovex S070 | <<locked>> | 90% | 47,659 psi | 86% | 2910 fps | 97.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,754 psi | 70% | 2756 fps | 95.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,131 psi | 71% | 2766 fps | 96% |
| Norma 203B | <<locked>> | 82% | 47,384 psi | 86% | 2913 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 47,500 psi | 86% | 2917 fps | 99.8% |
| Norma MRP | <<locked>> | 98% | 46,673 psi | 84% | 3028 fps | 97% |
| Norma MRP | <<locked>> | 98% | 47,355 psi | 86% | 3041 fps | 97.2% |
| Norma URP | <<locked>> | 92% | 48,834 psi | 88% | 2982 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 49,284 psi | 89% | 2992 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 82% | 47,601 psi | 86% | 2933 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 82% | 48,051 psi | 87% | 2943 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 92% | 47,630 psi | 86% | 2972 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 48,037 psi | 87% | 2979 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,477 psi | 66% | 1932 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,477 psi | 66% | 1936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 48,863 psi | 88% | 2913 fps | 98% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 49,284 psi | 89% | 2920 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 48,080 psi | 87% | 3028 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 48,544 psi | 88% | 3038 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 49,574 psi | 90% | 3015 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 49,995 psi | 90% | 3025 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 48,588 psi | 88% | 3038 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 48,950 psi | 89% | 3048 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 48,675 psi | 88% | 2877 fps | 100% |
| Rottweil R 902 | <<locked>> | 82% | 49,139 psi | 89% | 2887 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 47,834 psi | 87% | 2910 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 48,283 psi | 87% | 2920 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 49,545 psi | 90% | 3002 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 98% | 49,937 psi | 90% | 3009 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 88% | 47,979 psi | 87% | 2887 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 88% | 48,399 psi | 88% | 2897 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 49,559 psi | 90% | 2923 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 49,980 psi | 90% | 2933 fps | 98.8% |
| Shooters World Precision | <<locked>> | 84% | 49,864 psi | 90% | 2917 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 47,210 psi | 85% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 47,224 psi | 85% | 2897 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 90% | 47,659 psi | 86% | 2910 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 49,530 psi | 90% | 2972 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 49,951 psi | 90% | 2982 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 49,821 psi | 90% | 2818 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 47,079 psi | 85% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 49,414 psi | 89% | 2871 fps | 97.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 49,414 psi | 89% | 2874 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,081 psi | 89% | 2995 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,472 psi | 90% | 3005 fps | 96.2% |
| Somchem S355 | <<locked>> | 86% | 48,298 psi | 87% | 2910 fps | 99.9% |
| Somchem S355 | <<locked>> | 86% | 48,791 psi | 88% | 2920 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 47,601 psi | 86% | 2989 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 48,080 psi | 87% | 2999 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 46,920 psi | 85% | 2917 fps | 96.4% |
| Somchem S385 | <<locked>> | 96% | 47,282 psi | 86% | 2927 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 48,617 psi | 88% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 49,168 psi | 89% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 49,124 psi | 89% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 49,588 psi | 90% | 2867 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 49,443 psi | 89% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 49,864 psi | 90% | 2900 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 47,863 psi | 87% | 2927 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 90% | 48,312 psi | 87% | 2936 fps | 99.3% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,412 psi | 84% | 2897 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 82% | 47,703 psi | 86% | 2854 fps | 100% |
| Vihtavuori N540 | <<locked>> | 82% | 47,834 psi | 87% | 2858 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 47,108 psi | 85% | 2927 fps | 99% |
| Vihtavuori N550 | <<locked>> | 90% | 47,500 psi | 86% | 2936 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,588 psi | 90% | 3035 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 46,775 psi | 85% | 2982 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 47,558 psi | 86% | 2897 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 47,921 psi | 87% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 49,066 psi | 89% | 2992 fps | 97.6% |
| Winchester 760 | <<locked>> | 90% | 49,501 psi | 90% | 3002 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,016 psi | 72% | 2982 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,321 psi | 73% | 2992 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% | 45,818 psi | 83% | 2802 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,006 psi | 83% | 2805 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,628 psi | 81% | 2785 fps | 95.5% |
| Accurate 2700 | <<locked>> | 80% | 45,063 psi | 82% | 2795 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 38,159 psi | 69% | 2743 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 38,522 psi | 70% | 2753 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,410 psi | 79% | 2802 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 43,555 psi | 79% | 2805 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,126 psi | 58% | 2615 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 32,547 psi | 59% | 2628 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,916 psi | 76% | 2772 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 42,047 psi | 76% | 2779 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,556 psi | 82% | 2979 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,992 psi | 83% | 2992 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,959 psi | 76% | 2799 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,119 psi | 76% | 2802 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,686 psi | 81% | 2861 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,150 psi | 82% | 2874 fps | 99.3% |
| Alliant Reloder-16 | 35.5 gr | 80% | 32,358 psi | 59% | 2638 fps | 95.5% |
| Alliant Reloder-16 | 35.5 gr | 80% | 32,489 psi | 59% | 2644 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,347 psi | 66% | 2772 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,724 psi | 66% | 2782 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,210 psi | 51% | 2536 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,500 psi | 52% | 2549 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,680 psi | 66% | 2785 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,956 psi | 67% | 2795 fps | 95.8% |
| Alliant Reloder-26 | 43.2 gr | 90% | 34,998 psi | 63% | 2792 fps | 95.9% |
| Alliant Reloder-26 | 43.2 gr | 88% | 33,025 psi | 60% | 2736 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 41,582 psi | 75% | 2799 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,047 psi | 76% | 2808 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,438 psi | 77% | 2779 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 42,569 psi | 77% | 2782 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 42,293 psi | 77% | 2805 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 80% | 42,714 psi | 77% | 2818 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 39,639 psi | 72% | 2795 fps | 95% |
| Hodgdon H414 | <<locked>> | 84% | 40,059 psi | 72% | 2808 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 46,195 psi | 84% | 2890 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 46,586 psi | 84% | 2900 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,820 psi | 54% | 2533 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,965 psi | 54% | 2539 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,383 psi | 84% | 2917 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,076 psi | 76% | 2877 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 86% | 42,409 psi | 77% | 2887 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 48% | 1683 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 48% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,048 psi | 80% | 2808 fps | 99.2% |
| IMR 4064 | <<locked>> | 80% | 44,193 psi | 80% | 2815 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,427 psi | 84% | 2835 fps | 96.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,847 psi | 85% | 2844 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 43,062 psi | 78% | 2812 fps | 95.4% |
| IMR 4350 | <<locked>> | 88% | 43,134 psi | 78% | 2815 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,263 psi | 75% | 2753 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,684 psi | 75% | 2766 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 31,314 psi | 57% | 2579 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 31,705 psi | 57% | 2589 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 45,847 psi | 83% | 2894 fps | 99.7% |
| IMR 4895 | <<locked>> | 80% | 46,340 psi | 84% | 2907 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,063 psi | 80% | 2808 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,208 psi | 80% | 2815 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,172 psi | 65% | 2641 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 36,289 psi | 66% | 2648 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 41,539 psi | 75% | 2782 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 39,291 psi | 71% | 2736 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 36,419 psi | 66% | 2703 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 36,796 psi | 67% | 2713 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 44,077 psi | 80% | 2848 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 44,527 psi | 81% | 2861 fps | 99.5% |
| Norma MRP | <<locked>> | 94% | 40,538 psi | 73% | 2890 fps | 95% |
| Norma MRP | <<locked>> | 94% | 40,857 psi | 74% | 2900 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 32,735 psi | 59% | 2628 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 32,880 psi | 60% | 2631 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,251 psi | 80% | 2871 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 80% | 44,686 psi | 81% | 2881 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 38,856 psi | 70% | 2785 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 84% | 36,738 psi | 66% | 2740 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,890 psi | 49% | 1722 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,963 psi | 49% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,670 psi | 77% | 2792 fps | 96.6% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,076 psi | 78% | 2802 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,725 psi | 70% | 2838 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,160 psi | 71% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,461 psi | 62% | 2697 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,838 psi | 63% | 2710 fps | 96% |
| ReloadSwiss RS 70 | 40.8 gr | 84% | 36,550 psi | 66% | 2769 fps | 96% |
| ReloadSwiss RS 70 | 39.9 gr | 82% | 34,577 psi | 63% | 2717 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 45,571 psi | 82% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,064 psi | 83% | 2831 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,320 psi | 71% | 2743 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 39,465 psi | 71% | 2749 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 96% | 46,238 psi | 84% | 2940 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 46,630 psi | 84% | 2949 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 42,438 psi | 77% | 2779 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 42,569 psi | 77% | 2782 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,172 psi | 65% | 2641 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,289 psi | 66% | 2648 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 44,063 psi | 80% | 2808 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 44,208 psi | 80% | 2815 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,539 psi | 75% | 2782 fps | 95.8% |
| Shooters World SW4350 | <<locked>> | 84% | 39,291 psi | 71% | 2736 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,350 psi | 73% | 2795 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,799 psi | 74% | 2808 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,379 psi | 75% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,510 psi | 75% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,263 psi | 73% | 2694 fps | 95.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,596 psi | 73% | 2703 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,788 psi | 83% | 2933 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,195 psi | 84% | 2943 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 39,958 psi | 72% | 2749 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 40,103 psi | 73% | 2753 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,022 psi | 53% | 2566 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 29,385 psi | 53% | 2579 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 43,584 psi | 79% | 2851 fps | 95.5% |
| Somchem S385 | <<locked>> | 94% | 44,280 psi | 80% | 2871 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 45,788 psi | 83% | 2799 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,934 psi | 83% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,354 psi | 84% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,485 psi | 84% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,130 psi | 69% | 2680 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 38,261 psi | 69% | 2684 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,881 psi | 61% | 2625 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,272 psi | 62% | 2638 fps | 96% |
| Vihtavuori N165 | <<locked>> | 98% | 43,410 psi | 79% | 2838 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 44,425 psi | 80% | 2799 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,846 psi | 81% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,388 psi | 60% | 2625 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 33,765 psi | 61% | 2635 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 30,734 psi | 56% | 2618 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 86% | 31,154 psi | 56% | 2631 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,576 psi | 61% | 2602 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,910 psi | 61% | 2612 fps | 98.1% |
| Winchester 760 | <<locked>> | 84% | 39,929 psi | 72% | 2802 fps | 95.1% |
| Winchester 760 | <<locked>> | 84% | 40,350 psi | 73% | 2815 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,398 psi | 51% | 2625 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,660 psi | 52% | 2638 fps | 96.3% |
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 134 powders for .243 Ackley Improved loaded with the .243 | 97gr | Peregrine Glider GRM. Alliant Reloder-26 delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,091 fps. Accurate 3100 gives the best case fill at 100 %, and 134 of the 134 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (381 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 97.0 gr projectile in 0.243" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 3100, Alliant Reloder-23 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-26, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for .243 Ackley Improved with the .243 | 97gr | Peregrine Glider GRM 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.