Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Nosler Expansion Tip bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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.
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 2015 | <<locked>> | 82% | 54,650 psi | 88% | 2946 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,359 psi | 86% | 2963 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,259 psi | 89% | 3035 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,434 psi | 90% | 3028 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,672 psi | 72% | 2910 fps | 96.7% |
| Accurate 4064 | <<locked>> | 88% | 53,795 psi | 86% | 3018 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,273 psi | 87% | 3110 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 53,925 psi | 86% | 3051 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 55,274 psi | 89% | 3054 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,304 psi | 90% | 3054 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,925 psi | 86% | 2976 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,070 psi | 87% | 3176 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,579 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,999 psi | 90% | 3104 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,535 psi | 89% | 3176 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,185 psi | 85% | 3153 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,308 psi | 68% | 2940 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,211 psi | 77% | 3130 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,012 psi | 87% | 3064 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 56,043 psi | 90% | 3094 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,101 psi | 90% | 3068 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,505 psi | 87% | 2982 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,043 psi | 90% | 3081 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,417 psi | 86% | 3051 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 94% | 53,432 psi | 86% | 3104 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 92% | 53,867 psi | 86% | 3068 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,476 psi | 87% | 3061 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,376 psi | 89% | 3091 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,491 psi | 87% | 3097 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,012 psi | 87% | 3140 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 57% | 1913 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,898 psi | 90% | 3068 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,824 psi | 88% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,723 psi | 88% | 3038 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,317 psi | 87% | 3012 fps | 97.7% |
| IMR 4350 | <<locked>> | 96% | 53,171 psi | 85% | 3035 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,578 psi | 88% | 3045 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 54,926 psi | 88% | 3104 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 53,780 psi | 86% | 3074 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 56,304 psi | 90% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,824 psi | 86% | 3022 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,432 psi | 86% | 2976 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 54,447 psi | 87% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,867 psi | 86% | 3031 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 54,940 psi | 88% | 3071 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 55,956 psi | 90% | 3045 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,214 psi | 85% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,187 psi | 88% | 3087 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,882 psi | 86% | 3084 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,776 psi | 77% | 3077 fps | 96.4% |
| Norma URP | <<locked>> | 96% | 53,272 psi | 85% | 3094 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 55,912 psi | 90% | 3114 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,956 psi | 90% | 3150 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 53,171 psi | 85% | 3015 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,924 psi | 85% | 3035 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,998 psi | 58% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,505 psi | 86% | 3028 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,794 psi | 85% | 3107 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,678 psi | 84% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,114 psi | 87% | 3130 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,577 psi | 86% | 3163 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 53,345 psi | 86% | 2976 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,316 psi | 85% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,144 psi | 90% | 3087 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 56,101 psi | 90% | 3068 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,867 psi | 86% | 3031 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,824 psi | 86% | 3022 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,447 psi | 87% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,940 psi | 88% | 3071 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,491 psi | 87% | 3094 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,259 psi | 89% | 3051 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,985 psi | 90% | 3074 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,954 psi | 87% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,708 psi | 88% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,114 psi | 87% | 2986 fps | 97.7% |
| Somchem S335 | <<locked>> | 84% | 53,432 psi | 86% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,969 psi | 88% | 3041 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 56,130 psi | 90% | 3081 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,390 psi | 89% | 3156 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 3028 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 54,389 psi | 87% | 2917 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,214 psi | 85% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,911 psi | 86% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,346 psi | 87% | 3009 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,825 psi | 90% | 3094 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 53,200 psi | 85% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,767 psi | 89% | 3022 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,766 psi | 88% | 3097 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,050 psi | 75% | 3025 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,028 psi | 90% | 3068 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,606 psi | 86% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,693 psi | 86% | 3107 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,014 psi | 61% | 2953 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,130 psi | 90% | 3084 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 2015 | <<locked>> | 80% | 51,256 psi | 82% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,743 psi | 70% | 2808 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,576 psi | 83% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,064 psi | 74% | 2844 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 41,713 psi | 67% | 2851 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 41,437 psi | 66% | 2805 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,259 psi | 57% | 2730 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 47,398 psi | 76% | 2933 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 40,277 psi | 65% | 2772 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,545 psi | 79% | 2943 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,430 psi | 81% | 2923 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,555 psi | 70% | 2972 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,147 psi | 64% | 2795 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,989 psi | 69% | 2864 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,244 psi | 57% | 2746 fps | 95.8% |
| Alliant Reloder-17 | 61.2 gr | 80% | 34,780 psi | 56% | 2759 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,647 psi | 49% | 2638 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,795 psi | 57% | 2835 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,108 psi | 76% | 2943 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,900 psi | 64% | 2799 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 46,296 psi | 74% | 2887 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,082 psi | 82% | 2930 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,776 psi | 78% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,625 psi | 65% | 2802 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 43,511 psi | 70% | 2913 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 90% | 50,401 psi | 81% | 3005 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,863 psi | 77% | 2946 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,298 psi | 49% | 2575 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,179 psi | 71% | 2917 fps | 99.6% |
| Hodgdon Superformance | 72.8 gr | 90% | 46,630 psi | 75% | 3002 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 43% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,934 psi | 74% | 2894 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 48,051 psi | 77% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,279 psi | 68% | 2808 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,817 psi | 72% | 2835 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 46,804 psi | 75% | 2917 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,252 psi | 73% | 2867 fps | 95.6% |
| IMR 4831 | <<locked>> | 84% | 34,156 psi | 55% | 2684 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 44,063 psi | 71% | 2897 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,545 psi | 79% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,920 psi | 75% | 2910 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,094 psi | 76% | 2864 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,134 psi | 68% | 2808 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,320 psi | 63% | 2746 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 42,627 psi | 68% | 2838 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,369 psi | 74% | 2884 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,905 psi | 75% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,351 psi | 68% | 2851 fps | 98.8% |
| Norma 204 | <<locked>> | 94% | 50,270 psi | 81% | 3022 fps | 95% |
| Norma MRP | <<locked>> | 98% | 44,556 psi | 71% | 3012 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 35,650 psi | 57% | 2736 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 42,293 psi | 68% | 2864 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 39,856 psi | 64% | 2841 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,661 psi | 80% | 2953 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,371 psi | 79% | 2972 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 43% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,075 psi | 66% | 2789 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,847 psi | 74% | 2979 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,086 psi | 59% | 2835 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,259 psi | 57% | 2749 fps | 95.2% |
| ReloadSwiss RS 70 | 66.8 gr | 86% | 37,623 psi | 60% | 2822 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 50,140 psi | 80% | 2923 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,932 psi | 70% | 2828 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,420 psi | 60% | 2736 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 46,296 psi | 74% | 2887 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,320 psi | 63% | 2746 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,920 psi | 75% | 2910 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,134 psi | 68% | 2808 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,627 psi | 68% | 2838 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,595 psi | 62% | 2792 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,095 psi | 77% | 2927 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,963 psi | 74% | 2900 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,688 psi | 76% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,827 psi | 64% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,309 psi | 71% | 2805 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 47,282 psi | 76% | 2831 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,906 psi | 77% | 2923 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 38,218 psi | 61% | 2746 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 27,702 psi | 44% | 2552 fps | 95.8% |
| Somchem S385 | <<locked>> | 98% | 47,659 psi | 76% | 2963 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 48,153 psi | 77% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,918 psi | 70% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,425 psi | 71% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,390 psi | 58% | 2674 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 34,751 psi | 56% | 2680 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,908 psi | 80% | 2943 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,830 psi | 69% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,680 psi | 59% | 2740 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 33,301 psi | 53% | 2720 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,256 psi | 52% | 2595 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 50,067 psi | 80% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,700 psi | 70% | 2917 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,980 psi | 50% | 2733 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,687 psi | 73% | 2907 fps | 99.6% |
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 113 powders for .300 Win. Mag. loaded with the .308 | 150gr | Nosler Expansion Tip. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,176 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Nosler Expansion Tip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.