Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 175gr | SAKO Blade bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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 2700 | <<locked>> | 88% | 54,259 psi | 87% | 2782 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,648 psi | 83% | 2823 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 53,113 psi | 85% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,388 psi | 86% | 2877 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,666 psi | 89% | 2852 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,359 psi | 86% | 2806 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,941 psi | 90% | 2915 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,159 psi | 90% | 2984 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,983 psi | 87% | 2829 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,331 psi | 87% | 2850 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,259 psi | 87% | 2931 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,463 psi | 89% | 2958 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,664 psi | 86% | 2900 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,880 psi | 83% | 2899 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,269 psi | 77% | 2839 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,192 psi | 68% | 2757 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 3033 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,622 psi | 89% | 2871 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2822 fps | 96.1% |
| Bofors RP3 | <<locked>> | 86% | 54,868 psi | 88% | 2848 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,778 psi | 81% | 2900 fps | 97.3% |
| Bofors RP7 | <<locked>> | 90% | 54,447 psi | 87% | 2829 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 55,245 psi | 89% | 2862 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 53,505 psi | 86% | 2891 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 56,391 psi | 90% | 2904 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 82% | 56,275 psi | 90% | 2861 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,433 psi | 87% | 2855 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,477 psi | 89% | 2890 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,115 psi | 90% | 2967 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 59% | 1767 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,288 psi | 89% | 2838 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,724 psi | 89% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,724 psi | 89% | 2831 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,636 psi | 88% | 2808 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 55,187 psi | 88% | 2861 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,085 psi | 88% | 2848 fps | 98.9% |
| IMR 4831 | <<locked>> | 98% | 54,679 psi | 88% | 2878 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,709 psi | 89% | 2879 fps | 100% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,809 psi | 86% | 2940 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 56,173 psi | 90% | 2827 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,505 psi | 87% | 2776 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,084 psi | 85% | 2786 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,883 psi | 90% | 2852 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 53,679 psi | 86% | 2838 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,511 psi | 70% | 2668 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 54,549 psi | 87% | 2798 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,172 psi | 88% | 2794 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,592 psi | 86% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,883 psi | 90% | 2912 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 54,259 psi | 87% | 2986 fps | 99% |
| Norma URP | <<locked>> | 94% | 55,767 psi | 89% | 2914 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,346 psi | 87% | 2865 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,417 psi | 86% | 2944 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 94% | 54,607 psi | 88% | 2914 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,850 psi | 82% | 2860 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 60% | 1807 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,158 psi | 88% | 2844 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,216 psi | 89% | 2919 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,955 psi | 88% | 2950 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,185 psi | 85% | 2897 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,521 psi | 89% | 2980 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,129 psi | 88% | 2798 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,013 psi | 88% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,895 psi | 85% | 2831 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 98% | 52,866 psi | 85% | 2885 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 54,447 psi | 87% | 2829 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,883 psi | 90% | 2852 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,173 psi | 90% | 2827 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 53,084 psi | 85% | 2786 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,869 psi | 90% | 2877 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,362 psi | 90% | 2899 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,157 psi | 87% | 2825 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,390 psi | 89% | 2729 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,217 psi | 90% | 2732 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,854 psi | 90% | 2806 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2923 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 55,100 psi | 88% | 2727 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,955 psi | 88% | 2839 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,897 psi | 88% | 2918 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,331 psi | 87% | 2865 fps | 98.4% |
| Unknown powder | <<locked>> | 90% | 52,953 psi | 85% | 2865 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 84% | 55,405 psi | 89% | 2708 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,041 psi | 87% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,013 psi | 88% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,376 psi | 90% | 2819 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,345 psi | 86% | 2836 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,486 psi | 78% | 2753 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 54,708 psi | 88% | 2792 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,809 psi | 86% | 2883 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,795 psi | 86% | 2919 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,230 psi | 87% | 2829 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,505 psi | 86% | 2891 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,598 psi | 70% | 2888 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 51,793 psi | 83% | 2827 fps | 97.1% |
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 2700 | <<locked>> | 80% | 41,510 psi | 67% | 2559 fps | 95.5% |
| Accurate 3100 | <<locked>> | 88% | 33,924 psi | 54% | 2487 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 46,905 psi | 75% | 2684 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,389 psi | 57% | 2536 fps | 97.3% |
| ADI AR 2206H | <<locked>> | 80% | 52,301 psi | 84% | 2802 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,541 psi | 71% | 2655 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 44,947 psi | 72% | 2741 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,776 psi | 78% | 2863 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,802 psi | 72% | 2679 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,848 psi | 77% | 2745 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,722 psi | 56% | 2545 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,320 psi | 63% | 2675 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,353 psi | 71% | 2733 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,599 psi | 72% | 2784 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,166 psi | 44% | 2355 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,766 psi | 56% | 2581 fps | 95.7% |
| Alliant Reloder-26 | 64.9 gr | 86% | 33,083 psi | 53% | 2583 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,054 psi | 83% | 2817 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 43,743 psi | 70% | 2766 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 44,947 psi | 72% | 2689 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,599 psi | 72% | 2782 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 39,856 psi | 64% | 2557 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,353 psi | 73% | 2696 fps | 99% |
| Hodgdon H414 | <<locked>> | 80% | 40,553 psi | 65% | 2651 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 86% | 43,845 psi | 70% | 2684 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 52,866 psi | 85% | 2809 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,343 psi | 52% | 2445 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,397 psi | 73% | 2730 fps | 100% |
| Hodgdon Superformance | 63.9 gr | 82% | 39,131 psi | 63% | 2649 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 43% | 1576 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,963 psi | 74% | 2687 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,979 psi | 79% | 2724 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,714 psi | 70% | 2631 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,931 psi | 69% | 2598 fps | 96.7% |
| IMR 4350 | <<locked>> | 84% | 40,321 psi | 65% | 2589 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,147 psi | 64% | 2572 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 30,980 psi | 50% | 2411 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 49,052 psi | 79% | 2774 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 50,009 psi | 80% | 2876 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 80% | 52,431 psi | 84% | 2776 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,474 psi | 83% | 2729 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,978 psi | 75% | 2688 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,740 psi | 62% | 2539 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 36,956 psi | 59% | 2518 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 34,925 psi | 56% | 2510 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 51,227 psi | 82% | 2747 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,764 psi | 83% | 2745 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,195 psi | 76% | 2733 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,527 psi | 73% | 2734 fps | 95.5% |
| Norma MRP | <<locked>> | 90% | 38,334 psi | 61% | 2679 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 35,389 psi | 57% | 2534 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 47,442 psi | 76% | 2754 fps | 99.9% |
| Ramshot Grand | <<locked>> | 96% | 49,574 psi | 79% | 2876 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 82% | 36,680 psi | 59% | 2575 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 42,931 psi | 69% | 2728 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 44% | 1616 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,556 psi | 73% | 2681 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,416 psi | 82% | 2860 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,800 psi | 67% | 2732 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,114 psi | 56% | 2552 fps | 96.9% |
| ReloadSwiss RS 70 | 59.9 gr | 80% | 34,403 psi | 55% | 2555 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 48,791 psi | 78% | 2700 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,351 psi | 68% | 2635 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 49,617 psi | 80% | 2776 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 43,279 psi | 69% | 2714 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 39,856 psi | 64% | 2557 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,740 psi | 62% | 2539 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,431 psi | 84% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,978 psi | 75% | 2688 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,159 psi | 61% | 2552 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,308 psi | 69% | 2684 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,662 psi | 81% | 2769 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,909 psi | 83% | 2679 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,787 psi | 70% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,826 psi | 61% | 2482 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,628 psi | 72% | 2746 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 51,808 psi | 83% | 2681 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,772 psi | 69% | 2635 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,850 psi | 51% | 2489 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 41,249 psi | 66% | 2642 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 38,189 psi | 61% | 2589 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 80% | 49,168 psi | 79% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,485 psi | 76% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,414 psi | 78% | 2670 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,579 psi | 59% | 2484 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 38,290 psi | 61% | 2565 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 96% | 41,858 psi | 67% | 2644 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 48,066 psi | 77% | 2693 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,740 psi | 62% | 2605 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 82% | 29,646 psi | 48% | 2430 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,042 psi | 58% | 2506 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 40,553 psi | 65% | 2651 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,454 psi | 41% | 2373 fps | 95% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,788 psi | 72% | 2705 fps | 95.4% |
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 107 powders for .300 Win. Mag. loaded with the .308 | 175gr | SAKO Blade. Alliant Reloder-26 delivers the highest muzzle velocity at 3,033 fps; across all powders the maximum-charge window runs from 1,767 fps to 3,033 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 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 175.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .300 Win. Mag. with the .308 | 175gr | SAKO Blade they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2225, Baschieri & Pellagri 109 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.