Load Specifications
Bullet:.277 | 110gr | Hornady V-MAX
Bullet Manufacturer:Hornady
Bullet Weight:110 gr
Bullet Diameter:0.277"
Bullet Length:<<locked>>
Caliber:.270 Win. load data
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:67 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:13.5
Load data in caliber .270 Win. with .277 | 110gr | Hornady V-MAX bullet and 94 powders. The key underlying parameters are shown in the table above.
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>> | 84% | 54,534 psi | 87% | 3071 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,405 psi | 90% | 3146 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 53,113 psi | 85% | 3087 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,114 psi | 88% | 3159 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,188 psi | 90% | 3127 fps | 95.9% |
| Accurate 4064 | <<locked>> | 90% | 53,359 psi | 86% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,156 psi | 85% | 3209 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 86% | 53,751 psi | 86% | 3166 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 92% | 54,766 psi | 88% | 3163 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,202 psi | 90% | 3173 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,258 psi | 85% | 3100 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,388 psi | 86% | 3281 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,766 psi | 88% | 3186 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,288 psi | 89% | 3212 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,317 psi | 87% | 3271 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,637 psi | 89% | 3314 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,986 psi | 63% | 2959 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,598 psi | 70% | 3123 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,563 psi | 86% | 3173 fps | 98.8% |
| Bofors RP3 | <<locked>> | 92% | 55,550 psi | 89% | 3205 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 55,651 psi | 89% | 3163 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,520 psi | 87% | 3104 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,535 psi | 89% | 3199 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,925 psi | 86% | 3245 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 92% | 56,376 psi | 90% | 3215 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 98% | 56,217 psi | 90% | 3261 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 54,331 psi | 87% | 3179 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,488 psi | 81% | 3133 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,577 psi | 86% | 3205 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 57% | 1988 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,579 psi | 89% | 3182 fps | 99.8% |
| IMR 3031 | <<locked>> | 86% | 54,085 psi | 87% | 3169 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,331 psi | 87% | 3146 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,172 psi | 87% | 3114 fps | 96.3% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,811 psi | 89% | 3186 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,128 psi | 87% | 3140 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,809 psi | 86% | 3199 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 53,113 psi | 85% | 3182 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 56,202 psi | 90% | 3173 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,420 psi | 90% | 3156 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 53,403 psi | 86% | 3140 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,287 psi | 85% | 3091 fps | 99.4% |
| Lovex S062 | <<locked>> | 90% | 54,085 psi | 87% | 3146 fps | 99.9% |
| Lovex S065 | <<locked>> | 96% | 53,417 psi | 86% | 3133 fps | 97.6% |
| Lovex S070 | <<locked>> | 98% | 54,172 psi | 87% | 3163 fps | 96.6% |
| Norma 201 | <<locked>> | 88% | 55,782 psi | 89% | 3166 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,391 psi | 90% | 3169 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,462 psi | 87% | 3196 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 55,709 psi | 89% | 3251 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 55,143 psi | 88% | 3219 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,607 psi | 88% | 3241 fps | 97.5% |
| Ramshot TAC | <<locked>> | 84% | 52,924 psi | 85% | 3120 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,231 psi | 90% | 3205 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,650 psi | 86% | 3114 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 57% | 2034 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,579 psi | 89% | 3153 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 53,171 psi | 85% | 3130 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,724 psi | 89% | 3281 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,405 psi | 89% | 3317 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,794 psi | 85% | 3225 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,347 psi | 90% | 3317 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 84% | 53,534 psi | 86% | 3100 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,304 psi | 90% | 3163 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,114 psi | 88% | 3192 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 55,651 psi | 89% | 3163 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 96% | 53,417 psi | 86% | 3133 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 53,403 psi | 86% | 3140 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,085 psi | 87% | 3146 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 98% | 54,172 psi | 87% | 3163 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,461 psi | 86% | 3196 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,984 psi | 88% | 3159 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,622 psi | 89% | 3189 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,085 psi | 87% | 3058 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,375 psi | 87% | 3051 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,679 psi | 86% | 3077 fps | 96.2% |
| Somchem S321 | <<locked>> | 82% | 53,925 psi | 86% | 3150 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,432 psi | 86% | 3051 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,650 psi | 88% | 3153 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 55,361 psi | 89% | 3189 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,067 psi | 80% | 3196 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 53,809 psi | 86% | 3022 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,302 psi | 87% | 3045 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,130 psi | 90% | 3130 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,577 psi | 86% | 3094 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,447 psi | 86% | 3114 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,839 psi | 88% | 3196 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 84% | 52,997 psi | 85% | 3114 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 55,129 psi | 88% | 3136 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,838 psi | 86% | 3196 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,511 psi | 68% | 3045 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,317 psi | 89% | 3173 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 53,011 psi | 85% | 3166 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,217 psi | 90% | 3261 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,535 psi | 89% | 3196 fps | 99.8% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,196 psi | 77% | 2969 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,808 psi | 85% | 3091 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,930 psi | 66% | 2877 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,834 psi | 77% | 3038 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,649 psi | 84% | 3068 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 38,667 psi | 62% | 2861 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 40,016 psi | 64% | 2946 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 44,396 psi | 71% | 2986 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,652 psi | 60% | 2812 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,427 psi | 74% | 2999 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 46,702 psi | 75% | 2999 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,292 psi | 65% | 2999 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,231 psi | 60% | 2835 fps | 97.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,132 psi | 64% | 2907 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,595 psi | 63% | 2956 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 82% | 34,563 psi | 55% | 2848 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 34,345 psi | 55% | 2835 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,451 psi | 65% | 3048 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,569 psi | 70% | 2979 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 36,985 psi | 59% | 2838 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 52,112 psi | 84% | 3100 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,211 psi | 77% | 2992 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,310 psi | 73% | 3018 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,096 psi | 80% | 3176 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 40,480 psi | 65% | 2900 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 94% | 49,095 psi | 79% | 3133 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 44,802 psi | 72% | 2999 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 34,330 psi | 55% | 2779 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,872 psi | 66% | 2959 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,281 psi | 42% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,859 psi | 69% | 2943 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 44,280 psi | 71% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,508 psi | 63% | 2851 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,039 psi | 82% | 3058 fps | 95.6% |
| IMR 4350 | <<locked>> | 98% | 52,562 psi | 84% | 3127 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,720 psi | 81% | 3077 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 38,566 psi | 62% | 2894 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 41,104 psi | 66% | 2943 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 46,427 psi | 74% | 2999 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 52,779 psi | 85% | 3097 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,540 psi | 70% | 2963 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 44,324 psi | 71% | 2920 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 39,436 psi | 63% | 2858 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 44,440 psi | 71% | 2959 fps | 95.4% |
| Lovex S070 | <<locked>> | 94% | 47,747 psi | 77% | 3045 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,511 psi | 70% | 2936 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 43,671 psi | 70% | 2949 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 39,494 psi | 63% | 2894 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 39,958 psi | 64% | 2943 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,986 psi | 63% | 2900 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 94% | 44,744 psi | 72% | 3048 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 46,369 psi | 74% | 2995 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,006 psi | 74% | 3022 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,140 psi | 80% | 3051 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,585 psi | 43% | 1821 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,025 psi | 83% | 3094 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 46,688 psi | 75% | 3005 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,076 psi | 67% | 3015 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,418 psi | 55% | 2858 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,755 psi | 64% | 2959 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,859 psi | 69% | 3041 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 47,471 psi | 76% | 2995 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,307 psi | 66% | 2881 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,795 psi | 56% | 2772 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 52,112 psi | 84% | 3100 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 44,440 psi | 71% | 2959 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,540 psi | 70% | 2963 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 39,436 psi | 63% | 2858 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 94% | 47,747 psi | 77% | 3045 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,708 psi | 57% | 2825 fps | 95.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,788 psi | 72% | 2966 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,902 psi | 69% | 2946 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,875 psi | 72% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,333 psi | 60% | 2743 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,444 psi | 81% | 3022 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 50,285 psi | 81% | 3084 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 44,469 psi | 71% | 2897 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,338 psi | 71% | 2963 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 35,650 psi | 57% | 2785 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 31,415 psi | 50% | 2759 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 50,633 psi | 81% | 2972 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,179 psi | 72% | 2894 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,828 psi | 65% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,437 psi | 66% | 2877 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 33,895 psi | 54% | 2713 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 39,117 psi | 63% | 2884 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,572 psi | 75% | 2995 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 39,972 psi | 64% | 2858 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 41,220 psi | 66% | 2946 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 37,115 psi | 60% | 2920 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 34,389 psi | 55% | 2740 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 46,296 psi | 74% | 3045 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 49,095 psi | 79% | 3133 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,366 psi | 68% | 2949 fps | 98.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 106 powders for .270 Win. loaded with the .277 | 110gr | Hornady V-MAX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,317 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,317 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 110.0 gr projectile in 0.277" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-16 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. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.