Load Specifications
Bullet:.284 | 139gr | Hornady SST
Bullet Manufacturer:Hornady
Bullet Weight:139 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 x 64 Brenneke load data
Case Length (l3):2.519"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:66 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:10.5
Load data in caliber 7 x 64 Brenneke with .284 | 139gr | Hornady SST 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.
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% | 51,634 psi | 86% | 2723 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 53,650 psi | 89% | 2792 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,779 psi | 86% | 2805 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,939 psi | 88% | 2785 fps | 96.3% |
| Accurate 4064 | <<locked>> | 90% | 53,838 psi | 89% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,388 psi | 89% | 2917 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 54,215 psi | 90% | 2871 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 51,924 psi | 86% | 2818 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,156 psi | 88% | 2818 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,128 psi | 90% | 2802 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,650 psi | 89% | 2986 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,706 psi | 86% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,489 psi | 87% | 2861 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 51,271 psi | 85% | 2920 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 52,301 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,131 psi | 65% | 2703 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,816 psi | 73% | 2864 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,998 psi | 90% | 2884 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 52,141 psi | 87% | 2851 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,489 psi | 87% | 2818 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,750 psi | 86% | 2756 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,330 psi | 87% | 2848 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,346 psi | 90% | 2946 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 53,374 psi | 89% | 2867 fps | 99% |
| Hodgdon H414 | <<locked>> | 96% | 52,852 psi | 88% | 2913 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 94% | 53,490 psi | 89% | 2874 fps | 96% |
| Hodgdon H4895 | <<locked>> | 84% | 51,343 psi | 85% | 2828 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,836 psi | 84% | 2848 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,911 psi | 90% | 2910 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,374 psi | 89% | 2946 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,549 psi | 59% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,431 psi | 87% | 2828 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 51,227 psi | 85% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,503 psi | 86% | 2802 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,285 psi | 85% | 2772 fps | 96.8% |
| IMR 4350 | <<locked>> | 98% | 52,721 psi | 88% | 2844 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,169 psi | 85% | 2799 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,954 psi | 90% | 2907 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 53,824 psi | 89% | 2894 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 53,156 psi | 88% | 2818 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 53,940 psi | 90% | 2848 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,650 psi | 89% | 2795 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 54,447 psi | 90% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 53,737 psi | 89% | 2848 fps | 98.5% |
| Lovex S070 | <<locked>> | 96% | 51,430 psi | 85% | 2831 fps | 97.2% |
| Norma 201 | <<locked>> | 86% | 52,997 psi | 88% | 2815 fps | 100% |
| Norma 202 | <<locked>> | 86% | 53,345 psi | 89% | 2815 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,735 psi | 86% | 2851 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 52,475 psi | 87% | 2904 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 88% | 51,880 psi | 86% | 2871 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 98% | 51,358 psi | 85% | 2897 fps | 97.9% |
| Ramshot TAC | <<locked>> | 84% | 53,359 psi | 89% | 2835 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,026 psi | 88% | 2854 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,012 psi | 90% | 2822 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,882 psi | 60% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 53,708 psi | 89% | 2848 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,649 psi | 87% | 2923 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,141 psi | 87% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 53,069 psi | 88% | 2940 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,765 psi | 88% | 2963 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 54,070 psi | 90% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,592 psi | 89% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 52,301 psi | 87% | 2848 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 52,489 psi | 87% | 2818 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 53,737 psi | 89% | 2848 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 53,940 psi | 90% | 2848 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,447 psi | 90% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 51,430 psi | 85% | 2831 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,882 psi | 90% | 2907 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,837 psi | 86% | 2812 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,663 psi | 87% | 2841 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 51,300 psi | 85% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 51,387 psi | 85% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,954 psi | 90% | 2799 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 54,375 psi | 90% | 2851 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,925 psi | 90% | 2756 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,358 psi | 85% | 2805 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 52,547 psi | 87% | 2844 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,488 psi | 84% | 2910 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 54,331 psi | 90% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 51,576 psi | 86% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 53,171 psi | 88% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,853 psi | 89% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,882 psi | 90% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,488 psi | 86% | 2848 fps | 99% |
| Vihtavuori N530 | <<locked>> | 84% | 53,621 psi | 89% | 2818 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,257 psi | 87% | 2792 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,998 psi | 90% | 2904 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,743 psi | 71% | 2779 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,750 psi | 86% | 2828 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 53,447 psi | 89% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,852 psi | 88% | 2913 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,012 psi | 58% | 2697 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,460 psi | 87% | 2848 fps | 99.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,617 psi | 81% | 2677 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,539 psi | 69% | 2605 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,414 psi | 80% | 2753 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,647 psi | 82% | 2730 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,276 psi | 65% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,244 psi | 59% | 2572 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 44,918 psi | 75% | 2710 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 38,087 psi | 63% | 2552 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,949 psi | 78% | 2717 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 47,297 psi | 79% | 2707 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,886 psi | 68% | 2736 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,826 psi | 63% | 2579 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,640 psi | 68% | 2644 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,447 psi | 59% | 2585 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,677 psi | 54% | 2543 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,560 psi | 51% | 2484 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,043 psi | 63% | 2733 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,990 psi | 73% | 2710 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 37,333 psi | 62% | 2579 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,311 psi | 77% | 2710 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,559 psi | 81% | 2703 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,905 psi | 76% | 2740 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,502 psi | 84% | 2884 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 38,261 psi | 64% | 2585 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 90% | 43,250 psi | 72% | 2740 fps | 95% |
| Hodgdon H4350 | <<locked>> | 92% | 50,125 psi | 83% | 2818 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 45,310 psi | 75% | 2720 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,603 psi | 51% | 2431 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,307 psi | 69% | 2690 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 46,166 psi | 77% | 2815 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,455 psi | 44% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,323 psi | 72% | 2667 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,846 psi | 75% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,987 psi | 66% | 2589 fps | 97.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 45,353 psi | 75% | 2667 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 46,586 psi | 77% | 2740 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,310 psi | 75% | 2694 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 34,171 psi | 57% | 2530 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 41,597 psi | 69% | 2674 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,949 psi | 78% | 2717 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 44,092 psi | 73% | 2690 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,773 psi | 74% | 2644 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,943 psi | 66% | 2595 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,610 psi | 66% | 2585 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 45,411 psi | 75% | 2723 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 44,106 psi | 73% | 2664 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 44,266 psi | 74% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,001 psi | 66% | 2631 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 35,563 psi | 59% | 2575 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,537 psi | 66% | 2644 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 42,250 psi | 70% | 2726 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,789 psi | 78% | 2720 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,383 psi | 77% | 2743 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,734 psi | 84% | 2769 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,861 psi | 45% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,307 psi | 69% | 2621 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,801 psi | 71% | 2749 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,780 psi | 58% | 2612 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,492 psi | 62% | 2648 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 40,321 psi | 67% | 2717 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 48,095 psi | 80% | 2707 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,959 psi | 70% | 2615 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 35,215 psi | 59% | 2523 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 46,311 psi | 77% | 2710 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,610 psi | 66% | 2585 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,092 psi | 73% | 2690 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,943 psi | 66% | 2595 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 45,411 psi | 75% | 2723 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,216 psi | 60% | 2575 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,208 psi | 75% | 2697 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,410 psi | 72% | 2677 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,382 psi | 75% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,782 psi | 63% | 2484 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,367 psi | 74% | 2638 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 50,705 psi | 84% | 2795 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,020 psi | 75% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,773 psi | 74% | 2690 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 36,158 psi | 60% | 2536 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,905 psi | 46% | 2408 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 51,169 psi | 85% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,716 psi | 76% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,408 psi | 69% | 2598 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,872 psi | 70% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,258 psi | 57% | 2467 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 84% | 34,751 psi | 58% | 2523 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 46,876 psi | 78% | 2710 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,350 psi | 67% | 2592 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,622 psi | 61% | 2579 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 32,822 psi | 55% | 2559 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,385 psi | 50% | 2388 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 46,818 psi | 78% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 43,250 psi | 72% | 2740 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,806 psi | 51% | 2562 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,815 psi | 71% | 2680 fps | 99.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 112 powders for 7 x 64 Brenneke loaded with the .284 | 139gr | Hornady SST. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,986 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:10.5 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 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.