Load Specifications
Bullet:.264 | 120gr | RWS HIT
Bullet Manufacturer:RWS
Bullet Weight:120 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:.260 Ackley Improved load data
Case Length (l3):2.03"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:56 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:13.0
Load data in caliber .260 Ackley Improved with .264 | 120gr | RWS HIT 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% | 54,215 psi | 87% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,040 psi | 85% | 2805 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,723 psi | 88% | 2871 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,288 psi | 89% | 2854 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,729 psi | 70% | 2753 fps | 96.7% |
| Accurate 4064 | <<locked>> | 88% | 53,345 psi | 86% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,229 psi | 85% | 2940 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 53,388 psi | 86% | 2884 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 54,375 psi | 87% | 2884 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,738 psi | 89% | 2884 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,185 psi | 85% | 2808 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,750 psi | 85% | 2995 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,679 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,013 psi | 88% | 2927 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,244 psi | 87% | 2995 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,390 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,379 psi | 66% | 2779 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,688 psi | 75% | 2953 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,185 psi | 85% | 2897 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 55,056 psi | 88% | 2920 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,230 psi | 89% | 2894 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,824 psi | 86% | 2815 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,114 psi | 88% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,985 psi | 90% | 2936 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 55,927 psi | 90% | 2989 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 56,318 psi | 90% | 2949 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 53,969 psi | 87% | 2894 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,954 psi | 87% | 2917 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,476 psi | 86% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,446 psi | 84% | 2963 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 57% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,969 psi | 88% | 2894 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,969 psi | 87% | 2874 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,650 psi | 86% | 2861 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,476 psi | 86% | 2841 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 55,593 psi | 89% | 2920 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,563 psi | 86% | 2871 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 53,563 psi | 86% | 2927 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 56,405 psi | 90% | 2959 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,738 psi | 89% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,127 psi | 85% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,970 psi | 90% | 2858 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 53,635 psi | 86% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,098 psi | 85% | 2864 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 54,215 psi | 87% | 2904 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 55,347 psi | 89% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,202 psi | 90% | 2881 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,259 psi | 87% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,347 psi | 90% | 2972 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 46,499 psi | 75% | 2907 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 55,550 psi | 89% | 2976 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 54,940 psi | 88% | 2940 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,520 psi | 87% | 2976 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 55,709 psi | 89% | 2900 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,463 psi | 89% | 2917 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 58% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,188 psi | 90% | 2917 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,651 psi | 89% | 2995 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,129 psi | 88% | 3028 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,823 psi | 85% | 2959 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,825 psi | 90% | 3045 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 56,260 psi | 90% | 2854 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,072 psi | 90% | 2877 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,897 psi | 88% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,230 psi | 89% | 2894 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,098 psi | 85% | 2864 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,127 psi | 85% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,635 psi | 86% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,215 psi | 87% | 2904 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,301 psi | 85% | 2923 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,331 psi | 87% | 2881 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,187 psi | 88% | 2904 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,563 psi | 86% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,766 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,200 psi | 85% | 2815 fps | 97.7% |
| Somchem S335 | <<locked>> | 86% | 56,115 psi | 90% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,157 psi | 87% | 2874 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,448 psi | 89% | 2913 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,679 psi | 86% | 2979 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,821 psi | 80% | 2858 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 56,246 psi | 90% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 53,896 psi | 86% | 2753 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,941 psi | 90% | 2841 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,434 psi | 90% | 2854 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,055 psi | 85% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,679 psi | 88% | 2923 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 56,115 psi | 90% | 2881 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,665 psi | 88% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,722 psi | 86% | 2927 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,745 psi | 73% | 2858 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,679 psi | 88% | 2897 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,434 psi | 90% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,927 psi | 90% | 2989 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,318 psi | 60% | 2795 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,129 psi | 88% | 2913 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,068 psi | 82% | 2736 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,743 psi | 70% | 2661 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,865 psi | 82% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,469 psi | 73% | 2684 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 38,218 psi | 61% | 2641 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 41,394 psi | 66% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,692 psi | 52% | 2533 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,891 psi | 75% | 2772 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,943 psi | 64% | 2621 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,936 psi | 78% | 2776 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,893 psi | 80% | 2762 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,062 psi | 69% | 2812 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,726 psi | 64% | 2644 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,525 psi | 68% | 2707 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,967 psi | 53% | 2546 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,360 psi | 55% | 2612 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,371 psi | 49% | 2503 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,259 psi | 57% | 2690 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,398 psi | 74% | 2782 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 39,682 psi | 64% | 2651 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 45,701 psi | 73% | 2726 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,488 psi | 81% | 2762 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,327 psi | 77% | 2805 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,350 psi | 65% | 2654 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 42,801 psi | 69% | 2756 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 49,429 psi | 79% | 2835 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,326 psi | 76% | 2782 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,398 psi | 46% | 2388 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,729 psi | 70% | 2759 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 45,556 psi | 73% | 2835 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,556 psi | 43% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,455 psi | 73% | 2733 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 47,282 psi | 76% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,959 psi | 67% | 2654 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,353 psi | 71% | 2677 fps | 95.7% |
| IMR 4350 | <<locked>> | 92% | 46,035 psi | 74% | 2756 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,483 psi | 71% | 2707 fps | 95.6% |
| IMR 4831 | <<locked>> | 84% | 33,924 psi | 54% | 2546 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 43,584 psi | 70% | 2736 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 48,936 psi | 78% | 2776 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,427 psi | 74% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,775 psi | 75% | 2707 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,003 psi | 67% | 2661 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 39,131 psi | 63% | 2602 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 41,989 psi | 67% | 2680 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,021 psi | 74% | 2723 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,398 psi | 74% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,901 psi | 67% | 2694 fps | 98.9% |
| Norma 204 | <<locked>> | 96% | 52,649 psi | 84% | 2913 fps | 95.8% |
| Norma MRP | <<locked>> | 98% | 43,482 psi | 70% | 2844 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 35,172 psi | 56% | 2589 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 41,843 psi | 67% | 2713 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 39,218 psi | 63% | 2687 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 49,139 psi | 79% | 2792 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,747 psi | 78% | 2808 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 43% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,669 psi | 65% | 2635 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,237 psi | 73% | 2818 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,564 psi | 59% | 2680 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,708 psi | 56% | 2605 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,970 psi | 59% | 2664 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 50,038 psi | 80% | 2762 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,656 psi | 70% | 2674 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,173 psi | 60% | 2592 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 45,701 psi | 73% | 2726 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,131 psi | 63% | 2602 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,427 psi | 74% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,003 psi | 67% | 2661 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 41,989 psi | 67% | 2680 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,203 psi | 61% | 2641 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,311 psi | 76% | 2762 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,455 psi | 73% | 2743 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,079 psi | 75% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,363 psi | 63% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,830 psi | 70% | 2654 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 46,905 psi | 75% | 2674 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,268 psi | 76% | 2762 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,971 psi | 61% | 2598 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 27,630 psi | 44% | 2425 fps | 96.3% |
| Somchem S385 | <<locked>> | 98% | 46,557 psi | 75% | 2799 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,026 psi | 85% | 2726 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,471 psi | 76% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,366 psi | 70% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,918 psi | 70% | 2661 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,100 psi | 58% | 2533 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 34,403 psi | 55% | 2536 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 49,385 psi | 79% | 2779 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,453 psi | 68% | 2654 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,997 psi | 55% | 2539 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 30,893 psi | 50% | 2530 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,024 psi | 51% | 2457 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 49,095 psi | 79% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,062 psi | 69% | 2762 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,761 psi | 46% | 2526 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,962 psi | 72% | 2746 fps | 99.6% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 115 powders for .260 Ackley Improved loaded with the .264 | 120gr | RWS HIT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,045 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 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 120.0 gr projectile in 0.264" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, ADI AR 2213, 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.