Load Specifications
Bullet Manufacturer:Woodleigh
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 H&H Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:15.5
Load data in caliber .300 H&H Mag. with .308 | 150gr | Woodleigh PP SN bullet and 95 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.
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% | 56,159 psi | 90% | 2949 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,767 psi | 89% | 2976 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,172 psi | 87% | 2972 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2927 fps | 97.1% |
| Accurate 4064 | <<locked>> | 88% | 55,840 psi | 90% | 3025 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,086 psi | 90% | 3117 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 55,550 psi | 89% | 3058 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,185 psi | 85% | 3002 fps | 99.7% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,070 psi | 87% | 3091 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,244 psi | 87% | 3002 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,448 psi | 89% | 2976 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,434 psi | 89% | 3179 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,432 psi | 86% | 3025 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,824 psi | 86% | 3048 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,388 psi | 86% | 3117 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,621 psi | 88% | 3153 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,069 psi | 85% | 3074 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,947 psi | 70% | 2953 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,980 psi | 80% | 3140 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,303 psi | 89% | 3068 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 54,259 psi | 87% | 3045 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,070 psi | 87% | 3012 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,724 psi | 89% | 2986 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,940 psi | 86% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,940 psi | 88% | 3054 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 55,085 psi | 88% | 3110 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 92% | 55,405 psi | 89% | 3071 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 84% | 56,130 psi | 90% | 3068 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,592 psi | 86% | 3045 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,898 psi | 90% | 3100 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,622 psi | 89% | 3150 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 58% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,751 psi | 86% | 3015 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,391 psi | 90% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,028 psi | 90% | 3038 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,521 psi | 89% | 3015 fps | 97.9% |
| IMR 4350 | <<locked>> | 96% | 54,694 psi | 88% | 3041 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,767 psi | 89% | 3045 fps | 97.8% |
| IMR 4831 | <<locked>> | 96% | 53,069 psi | 85% | 3051 fps | 99.5% |
| IMR 4895 | <<locked>> | 86% | 55,201 psi | 89% | 3081 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,244 psi | 87% | 3002 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,521 psi | 89% | 3028 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,621 psi | 88% | 2979 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 55,941 psi | 90% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,535 psi | 89% | 3038 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 53,142 psi | 85% | 3018 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 54,143 psi | 87% | 2999 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,882 psi | 88% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,084 psi | 85% | 3031 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 55,201 psi | 89% | 3087 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,443 psi | 79% | 3091 fps | 96.7% |
| Norma URP | <<locked>> | 96% | 54,984 psi | 88% | 3100 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 53,664 psi | 86% | 3058 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 53,679 psi | 86% | 3094 fps | 98.4% |
| Ramshot TAC | <<locked>> | 82% | 54,462 psi | 87% | 3018 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,273 psi | 87% | 3035 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 58% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,085 psi | 88% | 3035 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,578 psi | 88% | 3117 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,331 psi | 87% | 3153 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,956 psi | 90% | 3140 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,955 psi | 88% | 3166 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 55,071 psi | 88% | 2982 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,882 psi | 88% | 2999 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,070 psi | 87% | 3035 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 54,070 psi | 87% | 3012 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,535 psi | 89% | 3038 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,521 psi | 89% | 3028 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,941 psi | 90% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,142 psi | 85% | 3018 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,854 psi | 90% | 3097 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,142 psi | 85% | 2995 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,983 psi | 87% | 3022 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,274 psi | 89% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,014 psi | 90% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,506 psi | 89% | 2989 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 54,853 psi | 88% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,362 psi | 90% | 3045 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,302 psi | 87% | 3031 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,417 psi | 86% | 3104 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,837 psi | 85% | 3038 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 84% | 55,666 psi | 89% | 2917 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,766 psi | 88% | 2963 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,245 psi | 89% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,811 psi | 89% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,809 psi | 86% | 3041 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 54,795 psi | 88% | 3002 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,592 psi | 86% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,953 psi | 85% | 3048 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,805 psi | 78% | 3035 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,650 psi | 86% | 3015 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,027 psi | 88% | 3051 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,332 psi | 89% | 3114 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,581 psi | 63% | 2972 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,867 psi | 86% | 3031 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,794 psi | 85% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,847 psi | 74% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 47,384 psi | 76% | 2851 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 40,466 psi | 65% | 2802 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,352 psi | 70% | 2818 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,534 psi | 55% | 2684 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 48,747 psi | 78% | 2940 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,452 psi | 66% | 2776 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 98% | 50,560 psi | 81% | 3025 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,850 psi | 82% | 2946 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,953 psi | 83% | 2927 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,063 psi | 72% | 2986 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,539 psi | 67% | 2805 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,382 psi | 71% | 2871 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,258 psi | 55% | 2697 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,085 psi | 58% | 2772 fps | 97.7% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,690 psi | 80% | 3012 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,952 psi | 51% | 2657 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 92% | 37,405 psi | 60% | 2858 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,399 psi | 78% | 2946 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 41,510 psi | 67% | 2812 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 47,688 psi | 76% | 2897 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,301 psi | 84% | 2930 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,502 psi | 81% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,090 psi | 67% | 2812 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 45,092 psi | 72% | 2927 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 88% | 48,617 psi | 78% | 2949 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,284 psi | 79% | 2953 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,617 psi | 47% | 2533 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,571 psi | 73% | 2923 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 47,964 psi | 77% | 3009 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 43% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,137 psi | 76% | 2897 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 49,559 psi | 79% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,569 psi | 70% | 2815 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,977 psi | 74% | 2838 fps | 95.8% |
| IMR 4350 | <<locked>> | 90% | 45,194 psi | 72% | 2864 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,526 psi | 70% | 2815 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 35,766 psi | 57% | 2700 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 45,513 psi | 73% | 2904 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 50,850 psi | 82% | 2946 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,544 psi | 78% | 2917 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,269 psi | 77% | 2867 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 43,584 psi | 70% | 2818 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 38,305 psi | 61% | 2700 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 44,092 psi | 71% | 2848 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,892 psi | 77% | 2890 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 48,283 psi | 77% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,758 psi | 70% | 2858 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 51,576 psi | 83% | 3025 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 46,006 psi | 74% | 3022 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 34,737 psi | 56% | 2690 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,801 psi | 70% | 2877 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 41,191 psi | 66% | 2848 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,908 psi | 82% | 2956 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,662 psi | 81% | 2976 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 43% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,380 psi | 68% | 2795 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,311 psi | 76% | 2989 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,363 psi | 62% | 2844 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,724 psi | 59% | 2762 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,885 psi | 62% | 2831 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 51,822 psi | 83% | 2930 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,426 psi | 73% | 2835 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 39,001 psi | 63% | 2749 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 47,688 psi | 76% | 2897 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,305 psi | 61% | 2700 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,544 psi | 78% | 2917 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,584 psi | 70% | 2818 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 44,092 psi | 71% | 2848 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,943 psi | 64% | 2799 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,530 psi | 79% | 2933 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,253 psi | 76% | 2904 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,950 psi | 78% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,060 psi | 66% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,931 psi | 69% | 2759 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 48,660 psi | 78% | 2835 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,255 psi | 79% | 2927 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 39,697 psi | 64% | 2756 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 29,051 psi | 47% | 2572 fps | 96.4% |
| Somchem S385 | <<locked>> | 96% | 46,209 psi | 74% | 2917 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 49,400 psi | 79% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,382 psi | 73% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,745 psi | 73% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,724 psi | 60% | 2684 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 36,100 psi | 58% | 2690 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 51,227 psi | 82% | 2946 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,164 psi | 71% | 2812 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,607 psi | 57% | 2687 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 32,692 psi | 52% | 2677 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,417 psi | 54% | 2605 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 51,488 psi | 83% | 2995 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 45,092 psi | 72% | 2927 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,284 psi | 49% | 2684 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,079 psi | 75% | 2910 fps | 99.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 116 powders for .300 H&H Mag. loaded with the .308 | 150gr | Woodleigh PP SN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,179 fps. Accurate 3100 gives the best case fill at 100 %, and 116 of the 116 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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 High Country, Accurate MAGPRO, ADI AR 2213 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.