Load Specifications
Load data in caliber 6 mm Creedmoor with .243 | 90gr | 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 ReloadSwiss RS 60.
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>> | 82% | 53,708 psi | 87% | 2969 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 52,692 psi | 85% | 2992 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,418 psi | 88% | 3061 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,114 psi | 89% | 3038 fps | 96.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2920 fps | 96% |
| Accurate 4064 | <<locked>> | 88% | 52,997 psi | 85% | 3045 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,982 psi | 85% | 3127 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 84% | 53,127 psi | 86% | 3074 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 54,273 psi | 88% | 3077 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,419 psi | 89% | 3077 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,779 psi | 85% | 2999 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,489 psi | 85% | 3189 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,331 psi | 88% | 3097 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,578 psi | 88% | 3117 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 53,911 psi | 87% | 3186 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,230 psi | 89% | 3225 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,466 psi | 67% | 2956 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,514 psi | 75% | 3130 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,794 psi | 85% | 3081 fps | 99.3% |
| Bofors RP3 | <<locked>> | 90% | 55,172 psi | 89% | 3117 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,853 psi | 88% | 3077 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,359 psi | 86% | 3002 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,984 psi | 89% | 3107 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,854 psi | 90% | 3127 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 55,782 psi | 90% | 3179 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 94% | 55,927 psi | 90% | 3136 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 53,650 psi | 87% | 3087 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,882 psi | 87% | 3110 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,316 psi | 86% | 3117 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,475 psi | 85% | 3150 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,694 psi | 58% | 1932 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,578 psi | 88% | 3084 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,490 psi | 86% | 3068 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,563 psi | 86% | 3054 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,272 psi | 86% | 3028 fps | 97.2% |
| IMR 4350 | <<locked>> | 98% | 55,259 psi | 89% | 3104 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,287 psi | 86% | 3054 fps | 97.1% |
| IMR 4831 | <<locked>> | 98% | 53,563 psi | 86% | 3117 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 55,999 psi | 90% | 3150 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 55,419 psi | 89% | 3077 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,837 psi | 85% | 3048 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,637 psi | 90% | 3051 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 53,577 psi | 86% | 3054 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,982 psi | 85% | 3051 fps | 98.3% |
| Lovex S070 | <<locked>> | 96% | 53,795 psi | 87% | 3084 fps | 97.5% |
| Norma 201 | <<locked>> | 86% | 55,027 psi | 89% | 3068 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,622 psi | 90% | 3071 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,795 psi | 87% | 3104 fps | 99.9% |
| Norma URP | <<locked>> | 98% | 55,550 psi | 90% | 3173 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 54,723 psi | 88% | 3133 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,462 psi | 88% | 3163 fps | 98.3% |
| Ramshot TAC | <<locked>> | 84% | 55,738 psi | 90% | 3094 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,347 psi | 89% | 3110 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,014 psi | 90% | 3074 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 58% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,941 psi | 90% | 3104 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,303 psi | 89% | 3192 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,013 psi | 89% | 3228 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,620 psi | 85% | 3146 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,941 psi | 90% | 3238 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 55,956 psi | 90% | 3051 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,535 psi | 90% | 3064 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,969 psi | 89% | 3107 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,853 psi | 88% | 3077 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,982 psi | 85% | 3051 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,837 psi | 85% | 3048 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,577 psi | 86% | 3054 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,795 psi | 87% | 3084 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,939 psi | 85% | 3110 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,288 psi | 88% | 3071 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,940 psi | 89% | 3097 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,287 psi | 86% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,664 psi | 87% | 2956 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,171 psi | 86% | 2999 fps | 97.2% |
| Somchem S335 | <<locked>> | 86% | 55,825 psi | 90% | 3002 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,809 psi | 87% | 3058 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 54,998 psi | 89% | 3100 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,635 psi | 87% | 3173 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 3038 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 82% | 55,999 psi | 90% | 2963 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 53,606 psi | 86% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,128 psi | 87% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,721 psi | 85% | 2995 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,200 psi | 86% | 3028 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,447 psi | 88% | 3110 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 55,927 psi | 90% | 3077 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,592 psi | 88% | 3041 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,505 psi | 86% | 3114 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,847 psi | 74% | 3041 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,592 psi | 88% | 3084 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,970 psi | 90% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,782 psi | 90% | 3179 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,231 psi | 60% | 2959 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,795 psi | 88% | 3104 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% | 50,662 psi | 82% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,279 psi | 70% | 2838 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,575 psi | 82% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,486 psi | 78% | 2920 fps | 95.2% |
| Accurate 3100 | <<locked>> | 98% | 40,799 psi | 66% | 2867 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 40,886 psi | 66% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,853 psi | 56% | 2753 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,644 psi | 75% | 2956 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 39,740 psi | 64% | 2792 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,718 psi | 79% | 2963 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,617 psi | 80% | 2953 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,627 psi | 69% | 2989 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,378 psi | 64% | 2812 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,308 psi | 68% | 2884 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,737 psi | 56% | 2762 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,113 psi | 55% | 2776 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 32,126 psi | 52% | 2713 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,666 psi | 61% | 2920 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,079 psi | 74% | 2959 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 39,305 psi | 63% | 2818 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 48,457 psi | 78% | 2963 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,459 psi | 81% | 2953 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,935 psi | 77% | 2989 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,103 psi | 65% | 2825 fps | 96.3% |
| Hodgdon H414 | <<locked>> | 90% | 45,658 psi | 74% | 2992 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 90% | 49,516 psi | 80% | 3018 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 47,079 psi | 76% | 2969 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 32,082 psi | 52% | 2657 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,337 psi | 70% | 2936 fps | 99.3% |
| Hodgdon Superformance | 45 gr | 92% | 48,747 psi | 79% | 3077 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 43% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,179 psi | 73% | 2913 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 46,905 psi | 76% | 2963 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,727 psi | 67% | 2831 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,280 psi | 71% | 2854 fps | 95% |
| IMR 4350 | <<locked>> | 94% | 48,936 psi | 79% | 2992 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 47,282 psi | 76% | 2943 fps | 95.7% |
| IMR 4831 | <<locked>> | 86% | 35,969 psi | 58% | 2762 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 43,337 psi | 70% | 2917 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 48,718 psi | 79% | 2963 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,195 psi | 75% | 2936 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,601 psi | 75% | 2890 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 41,800 psi | 67% | 2838 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 41,249 psi | 67% | 2822 fps | 95.7% |
| Lovex S070 | <<locked>> | 90% | 44,628 psi | 72% | 2910 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,556 psi | 73% | 2900 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 45,963 psi | 74% | 2910 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,713 psi | 67% | 2871 fps | 98.4% |
| Norma URP | <<locked>> | 84% | 35,070 psi | 57% | 2756 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 41,408 psi | 67% | 2884 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 41,568 psi | 67% | 2913 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 48,849 psi | 79% | 2972 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,327 psi | 78% | 2992 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,649 psi | 85% | 3018 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,803 psi | 43% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,975 psi | 69% | 2861 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,020 psi | 73% | 3002 fps | 98.5% |
| ReloadSwiss RS 60 | 37 gr | 80% | 36,289 psi | 59% | 2848 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,086 psi | 60% | 2831 fps | 95.5% |
| ReloadSwiss RS 70 | 41.4 gr | 88% | 39,610 psi | 64% | 2900 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 49,545 psi | 80% | 2946 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,366 psi | 70% | 2851 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 36,869 psi | 59% | 2756 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 48,457 psi | 78% | 2963 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,249 psi | 67% | 2822 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,195 psi | 75% | 2936 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,800 psi | 67% | 2838 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 44,628 psi | 72% | 2910 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,014 psi | 61% | 2812 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,282 psi | 76% | 2943 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,324 psi | 73% | 2923 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,949 psi | 76% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,189 psi | 63% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 46,485 psi | 75% | 2881 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 46,470 psi | 75% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,920 psi | 76% | 2940 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 37,550 psi | 61% | 2762 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 27,427 psi | 44% | 2572 fps | 95.2% |
| Somchem S385 | <<locked>> | 98% | 46,499 psi | 75% | 2976 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 52,837 psi | 85% | 2920 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,297 psi | 76% | 2848 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,887 psi | 68% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,584 psi | 70% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,810 psi | 58% | 2694 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 36,593 psi | 59% | 2759 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 48,994 psi | 79% | 2963 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 42,206 psi | 68% | 2831 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,071 psi | 58% | 2756 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 92% | 34,954 psi | 56% | 2799 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,807 psi | 51% | 2612 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 49,037 psi | 79% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,658 psi | 74% | 2992 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,429 psi | 49% | 2736 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,715 psi | 72% | 2923 fps | 99.3% |
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 111 powders for 6 mm Creedmoor loaded with the .243 | 90gr | Nosler Expansion Tip. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,932 fps to 3,238 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 (427 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, ReloadSwiss RS 60 rank at the top here: for 6 mm Creedmoor with the .243 | 90gr | Nosler Expansion Tip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.