Load Specifications
Load data in caliber .270 Win. with .277 | 115gr | Sierra MatchKing 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 60, Alliant Reloder-17 and Hodgdon H414.
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% | 53,084 psi | 85% | 2989 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,303 psi | 89% | 3058 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,476 psi | 86% | 3071 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,404 psi | 87% | 3045 fps | 96.1% |
| Accurate 4064 | <<locked>> | 90% | 55,492 psi | 89% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,579 psi | 89% | 3189 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 55,608 psi | 89% | 3140 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 53,345 psi | 86% | 3081 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,433 psi | 87% | 3087 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,390 psi | 89% | 3068 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,434 psi | 89% | 3261 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,476 psi | 86% | 3107 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,012 psi | 87% | 3130 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 3248 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,404 psi | 87% | 3232 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,611 psi | 65% | 2949 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,847 psi | 74% | 3127 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,550 psi | 89% | 3150 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 53,969 psi | 87% | 3123 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,230 psi | 87% | 3084 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,217 psi | 90% | 3071 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,983 psi | 87% | 3114 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,086 psi | 90% | 3222 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 54,998 psi | 88% | 3133 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 96% | 54,650 psi | 88% | 3179 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 94% | 55,288 psi | 89% | 3143 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 86% | 56,231 psi | 90% | 3150 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,953 psi | 85% | 3117 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,999 psi | 90% | 3186 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,332 psi | 89% | 3215 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,520 psi | 57% | 1952 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,853 psi | 86% | 3094 fps | 99.8% |
| IMR 3031 | <<locked>> | 86% | 56,246 psi | 90% | 3136 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,202 psi | 90% | 3120 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,188 psi | 90% | 3097 fps | 97.3% |
| IMR 4350 | <<locked>> | 98% | 54,433 psi | 87% | 3110 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,898 psi | 90% | 3117 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 3179 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 55,347 psi | 89% | 3163 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 54,433 psi | 87% | 3087 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,492 psi | 89% | 3114 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,940 psi | 88% | 3061 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 56,043 psi | 90% | 3117 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,361 psi | 89% | 3110 fps | 98.3% |
| Lovex S070 | <<locked>> | 96% | 52,939 psi | 85% | 3091 fps | 96.9% |
| Norma 201 | <<locked>> | 86% | 54,389 psi | 87% | 3081 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,969 psi | 88% | 3087 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,229 psi | 85% | 3114 fps | 99.7% |
| Norma URP | <<locked>> | 98% | 54,534 psi | 87% | 3173 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 88% | 53,635 psi | 86% | 3133 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 98% | 53,388 psi | 86% | 3166 fps | 97.7% |
| Ramshot TAC | <<locked>> | 84% | 54,955 psi | 88% | 3100 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,578 psi | 88% | 3120 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,434 psi | 89% | 3087 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,042 psi | 58% | 1998 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,042 psi | 88% | 3107 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,215 psi | 87% | 3196 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,925 psi | 86% | 3235 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,187 psi | 88% | 3209 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,679 psi | 88% | 3232 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 55,361 psi | 89% | 3068 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,839 psi | 88% | 3081 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,838 psi | 86% | 3114 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 54,230 psi | 87% | 3084 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,361 psi | 89% | 3110 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,492 psi | 89% | 3114 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,043 psi | 90% | 3117 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 52,939 psi | 85% | 3091 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,840 psi | 90% | 3179 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,345 psi | 86% | 3074 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,969 psi | 87% | 3104 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,854 psi | 90% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,202 psi | 90% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,840 psi | 90% | 3061 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 55,811 psi | 89% | 3120 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,172 psi | 88% | 3018 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,084 psi | 85% | 3068 fps | 99.6% |
| Somchem S355 | <<locked>> | 92% | 54,114 psi | 87% | 3110 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 3179 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,201 psi | 89% | 2979 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,101 psi | 90% | 3009 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,737 psi | 88% | 3048 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,463 psi | 89% | 3061 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,767 psi | 89% | 3091 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 53,272 psi | 85% | 3110 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 84% | 55,143 psi | 88% | 3087 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,766 psi | 86% | 3054 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,260 psi | 90% | 3179 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,672 psi | 72% | 3035 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,708 psi | 86% | 3091 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,027 psi | 88% | 3136 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,984 psi | 88% | 3186 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,506 psi | 59% | 2943 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,940 psi | 86% | 3114 fps | 99.9% |
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% | 49,647 psi | 80% | 2933 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,685 psi | 68% | 2851 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,792 psi | 80% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,995 psi | 82% | 2986 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 40,350 psi | 65% | 2841 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 36,521 psi | 59% | 2808 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,021 psi | 74% | 2963 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 39,044 psi | 63% | 2795 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,066 psi | 77% | 2976 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 48,689 psi | 78% | 2966 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,901 psi | 67% | 2986 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,769 psi | 62% | 2818 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,669 psi | 67% | 2887 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,463 psi | 58% | 2822 fps | 95.1% |
| Alliant Reloder-17 | 49.1 gr | 80% | 33,649 psi | 54% | 2772 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 33,678 psi | 54% | 2769 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,479 psi | 63% | 2979 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,223 psi | 73% | 2959 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 38,595 psi | 62% | 2822 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 50,807 psi | 81% | 3022 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,763 psi | 80% | 2966 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,079 psi | 75% | 2992 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,141 psi | 84% | 3156 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 39,334 psi | 63% | 2822 fps | 95.4% |
| Hodgdon H414 | 55.2 gr | 92% | 47,834 psi | 77% | 3054 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 92% | 51,808 psi | 83% | 3081 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 46,441 psi | 74% | 2976 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 33,402 psi | 54% | 2707 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,598 psi | 68% | 2940 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 51,445 psi | 82% | 3143 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 43% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,425 psi | 71% | 2920 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 46,166 psi | 74% | 2972 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,002 psi | 66% | 2835 fps | 97.4% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,311 psi | 74% | 2913 fps | 95% |
| IMR 4350 | <<locked>> | 96% | 50,995 psi | 82% | 3048 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,458 psi | 79% | 3002 fps | 95.7% |
| IMR 4831 | <<locked>> | 88% | 37,652 psi | 60% | 2818 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 42,714 psi | 68% | 2923 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 48,066 psi | 77% | 2976 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 45,339 psi | 73% | 2940 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,774 psi | 73% | 2894 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 40,973 psi | 66% | 2838 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 43,192 psi | 69% | 2881 fps | 95.7% |
| Lovex S070 | <<locked>> | 92% | 46,688 psi | 75% | 2972 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,121 psi | 72% | 2913 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 45,310 psi | 73% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,075 psi | 66% | 2877 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 39,160 psi | 63% | 2871 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 40,611 psi | 65% | 2884 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 43,830 psi | 70% | 2979 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 47,935 psi | 77% | 2972 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,703 psi | 76% | 2999 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,779 psi | 83% | 3025 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,847 psi | 43% | 1788 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,368 psi | 73% | 2927 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,005 psi | 71% | 2999 fps | 97.9% |
| ReloadSwiss RS 60 | 49.1 gr | 80% | 35,810 psi | 57% | 2851 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 38,856 psi | 62% | 2887 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,669 psi | 67% | 2966 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 48,892 psi | 78% | 2959 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,815 psi | 69% | 2861 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 36,332 psi | 58% | 2762 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 50,807 psi | 81% | 3022 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,192 psi | 69% | 2881 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,339 psi | 73% | 2940 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,973 psi | 66% | 2838 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 46,688 psi | 75% | 2972 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,202 psi | 60% | 2808 fps | 96.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,470 psi | 75% | 2946 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,483 psi | 71% | 2927 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,122 psi | 74% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,493 psi | 62% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,849 psi | 78% | 2940 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 52,069 psi | 83% | 3058 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,006 psi | 74% | 2867 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,079 psi | 74% | 2943 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 37,130 psi | 60% | 2769 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 28,776 psi | 46% | 2628 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 51,967 psi | 83% | 2933 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,485 psi | 75% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,293 psi | 68% | 2841 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,033 psi | 69% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,288 psi | 57% | 2700 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 38,319 psi | 61% | 2815 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 48,254 psi | 77% | 2972 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 41,481 psi | 67% | 2835 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 37,840 psi | 61% | 2815 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 36,579 psi | 59% | 2854 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,227 psi | 50% | 2605 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 48,138 psi | 77% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 48,066 psi | 77% | 3061 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 32,010 psi | 51% | 2795 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,034 psi | 71% | 2930 fps | 98.9% |
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 94 powders for .270 Win. loaded with the .277 | 115gr | Sierra MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,261 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,261 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 94 of the 94 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 115.0 gr projectile in 0.277" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon H414 rank at the top here: for .270 Win. with the .277 | 115gr | Sierra MatchKing 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.