Load Specifications
Load data in caliber .30-06 Ackley Improved with .308 | 150gr | Speer Boat-Tail bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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>> | 88% | 55,767 psi | 89% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,201 psi | 87% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,592 psi | 86% | 2894 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,159 psi | 90% | 2966 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 53,403 psi | 86% | 2936 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,037 psi | 79% | 2933 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 82% | 55,071 psi | 88% | 2822 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,463 psi | 89% | 2848 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,824 psi | 88% | 2966 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 96% | 55,767 psi | 89% | 2963 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 56,014 psi | 90% | 2946 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,041 psi | 87% | 2923 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 54,114 psi | 87% | 2907 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,622 psi | 89% | 3035 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,273 psi | 87% | 3077 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,376 psi | 89% | 2986 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,608 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,072 psi | 90% | 3005 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,124 psi | 77% | 2936 fps | 97.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,970 psi | 90% | 3100 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,505 psi | 87% | 2818 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,592 psi | 88% | 2976 fps | 98.7% |
| Bofors RP3 | <<locked>> | 96% | 55,738 psi | 89% | 2999 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,101 psi | 90% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,171 psi | 85% | 2953 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,897 psi | 88% | 3048 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 84% | 54,795 psi | 88% | 2930 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,985 psi | 90% | 2953 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,577 psi | 86% | 2953 fps | 98% |
| Hodgdon H4895 | <<locked>> | 90% | 55,303 psi | 89% | 2979 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,483 psi | 71% | 2822 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,302 psi | 87% | 3009 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 56% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,214 psi | 85% | 2930 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 54,752 psi | 88% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,419 psi | 89% | 2949 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,043 psi | 90% | 2927 fps | 96.2% |
| IMR 4198 | <<locked>> | 84% | 55,666 psi | 89% | 2844 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,056 psi | 88% | 2936 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,673 psi | 75% | 2874 fps | 97.3% |
| IMR 4895 | <<locked>> | 92% | 53,925 psi | 86% | 2986 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 88% | 54,041 psi | 87% | 2923 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 54,244 psi | 87% | 2910 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,273 psi | 87% | 2949 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,042 psi | 88% | 2900 fps | 99.4% |
| Lovex S062 | <<locked>> | 94% | 54,897 psi | 88% | 2946 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2930 fps | 97.2% |
| Norma 201 | <<locked>> | 90% | 53,490 psi | 86% | 2913 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 53,911 psi | 86% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,187 psi | 88% | 2992 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 48,849 psi | 78% | 2930 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 94% | 55,840 psi | 90% | 3018 fps | 99.4% |
| Ramshot TAC | <<locked>> | 88% | 54,491 psi | 87% | 2930 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,751 psi | 86% | 2953 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,332 psi | 89% | 2927 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,259 psi | 57% | 1844 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,679 psi | 86% | 2910 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,317 psi | 87% | 2936 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,304 psi | 90% | 3074 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,941 psi | 90% | 3110 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,820 psi | 78% | 2956 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,574 psi | 79% | 2972 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 88% | 54,737 psi | 88% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 53,896 psi | 86% | 2910 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 55,608 psi | 89% | 2989 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2930 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,273 psi | 87% | 2949 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,897 psi | 88% | 2946 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,359 psi | 86% | 2874 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,911 psi | 86% | 2999 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,243 psi | 85% | 2864 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,289 psi | 90% | 2963 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,374 psi | 86% | 2936 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,637 psi | 89% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,376 psi | 89% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,534 psi | 87% | 2881 fps | 95.8% |
| Somchem S321 | <<locked>> | 86% | 55,274 psi | 89% | 2959 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 54,578 psi | 88% | 2858 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,840 psi | 90% | 2956 fps | 99.4% |
| Somchem S355 | <<locked>> | 98% | 55,927 psi | 90% | 2986 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2874 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 86% | 55,332 psi | 89% | 2831 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,622 psi | 89% | 2851 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,171 psi | 85% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,476 psi | 87% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,215 psi | 87% | 2920 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,271 psi | 82% | 2927 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 88% | 54,650 psi | 88% | 2923 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 56,130 psi | 90% | 2943 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,343 psi | 81% | 2930 fps | 97.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,460 psi | 84% | 2917 fps | 99.5% |
| Winchester 748 | <<locked>> | 88% | 54,041 psi | 87% | 2972 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 52,852 psi | 85% | 2943 fps | 99.5% |
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% | 43,453 psi | 70% | 2687 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,413 psi | 76% | 2792 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,143 psi | 58% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,569 psi | 68% | 2743 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 34,156 psi | 55% | 2575 fps | 98.9% |
| Accurate 4350 | <<locked>> | 94% | 39,653 psi | 64% | 2753 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 51,938 psi | 83% | 2776 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,330 psi | 84% | 2802 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,958 psi | 64% | 2690 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 38,537 psi | 62% | 2638 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 52,504 psi | 84% | 2894 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,003 psi | 67% | 2707 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 41,481 psi | 67% | 2717 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,747 psi | 78% | 2917 fps | 99.1% |
| Alliant Power Pro 2000-MR | 52.3 gr | 82% | 38,624 psi | 62% | 2753 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,214 psi | 53% | 2549 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,110 psi | 79% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 38,261 psi | 61% | 2671 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,045 psi | 64% | 2762 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,998 psi | 56% | 2671 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,082 psi | 82% | 2769 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,044 psi | 63% | 2687 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 32,561 psi | 52% | 2546 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,034 psi | 71% | 2707 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,509 psi | 65% | 2726 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,425 psi | 71% | 2861 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 48,066 psi | 77% | 2825 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,820 psi | 78% | 2841 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 41,089 psi | 66% | 2720 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,292 psi | 65% | 2703 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,432 psi | 55% | 2598 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,289 psi | 58% | 2664 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 41% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,870 psi | 62% | 2657 fps | 97% |
| IMR 3031 | <<locked>> | 80% | 39,407 psi | 63% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 38,087 psi | 61% | 2625 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 52,431 psi | 84% | 2864 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 49,617 psi | 80% | 2759 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,721 psi | 83% | 2884 fps | 95.1% |
| IMR 4831 | <<locked>> | 96% | 40,828 psi | 65% | 2759 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 36,680 psi | 59% | 2648 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 42,003 psi | 67% | 2707 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 47,239 psi | 76% | 2799 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 38,624 psi | 62% | 2671 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 40,509 psi | 65% | 2635 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 35,462 psi | 57% | 2575 fps | 96.9% |
| Lovex S065 | <<locked>> | 94% | 44,904 psi | 72% | 2769 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,291 psi | 63% | 2651 fps | 97.9% |
| Norma 202 | <<locked>> | 80% | 39,233 psi | 63% | 2661 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 35,230 psi | 56% | 2605 fps | 95.3% |
| Norma URP | <<locked>> | 94% | 40,118 psi | 64% | 2756 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 82% | 37,115 psi | 60% | 2667 fps | 95.6% |
| Ramshot TAC | <<locked>> | 82% | 44,918 psi | 72% | 2759 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,176 psi | 66% | 2723 fps | 97% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,643 psi | 73% | 2759 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,208 psi | 42% | 1650 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,268 psi | 76% | 2802 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,659 psi | 76% | 2818 fps | 95% |
| ReloadSwiss RS 52 | 49.5 gr | 80% | 37,115 psi | 60% | 2710 fps | 95.1% |
| ReloadSwiss RS 60 | 50.3 gr | 80% | 30,719 psi | 49% | 2559 fps | 96.1% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,525 psi | 68% | 2835 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,224 psi | 74% | 2907 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 42,975 psi | 69% | 2703 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 37,347 psi | 60% | 2598 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 32,837 psi | 53% | 2546 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 44,904 psi | 72% | 2769 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,624 psi | 62% | 2671 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 35,462 psi | 57% | 2575 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,024 psi | 80% | 2822 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,390 psi | 58% | 2657 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,835 psi | 80% | 2812 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,844 psi | 69% | 2726 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,566 psi | 62% | 2657 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,756 psi | 65% | 2615 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,605 psi | 54% | 2474 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 50,952 psi | 82% | 2825 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 45,295 psi | 73% | 2789 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 40,364 psi | 65% | 2621 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 39,784 psi | 64% | 2674 fps | 96.6% |
| Somchem S355 | <<locked>> | 82% | 33,953 psi | 54% | 2559 fps | 95.3% |
| Somchem S365 | <<locked>> | 90% | 31,415 psi | 50% | 2582 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 46,166 psi | 74% | 2694 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,944 psi | 66% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,303 psi | 58% | 2595 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,173 psi | 60% | 2595 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 30,139 psi | 48% | 2441 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 94% | 42,134 psi | 68% | 2759 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 41,872 psi | 67% | 2700 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 80% | 35,868 psi | 58% | 2582 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 94% | 41,263 psi | 66% | 2759 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,099 psi | 56% | 2572 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,191 psi | 66% | 2746 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,724 psi | 60% | 2657 fps | 96.8% |
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 108 powders for .30-06 Ackley Improved loaded with the .308 | 150gr | Speer Boat-Tail. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,110 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,110 fps. Accurate 4350 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .30-06 Ackley Improved with the .308 | 150gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Alliant Reloder-26 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.