Load Specifications
Load data in caliber .375 Blaser Mag. with .375 | 270gr | Barnes XLC S bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 54,215 psi | 89% | 2569 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,896 psi | 88% | 2605 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,157 psi | 89% | 2654 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,694 psi | 90% | 2635 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,163 psi | 71% | 2556 fps | 96.8% |
| Accurate 4064 | <<locked>> | 88% | 53,635 psi | 88% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,025 psi | 85% | 2720 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 52,823 psi | 87% | 2667 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 53,476 psi | 88% | 2664 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,868 psi | 90% | 2661 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,518 psi | 86% | 2595 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,940 psi | 90% | 2822 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,621 psi | 88% | 2687 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,273 psi | 89% | 2707 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 52,866 psi | 87% | 2769 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,751 psi | 88% | 2802 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,959 psi | 67% | 2582 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,440 psi | 75% | 2736 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 52,054 psi | 85% | 2677 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 54,650 psi | 90% | 2707 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,331 psi | 89% | 2671 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,330 psi | 88% | 2598 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,302 psi | 89% | 2694 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 51,924 psi | 85% | 2667 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 96% | 54,186 psi | 89% | 2759 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 94% | 54,853 psi | 90% | 2720 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 53,345 psi | 88% | 2674 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,388 psi | 86% | 2697 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,214 psi | 86% | 2703 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,621 psi | 90% | 2795 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 59% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,998 psi | 89% | 2674 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,171 psi | 87% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,200 psi | 87% | 2648 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 52,866 psi | 87% | 2621 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 54,027 psi | 89% | 2694 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 52,605 psi | 86% | 2651 fps | 97.6% |
| IMR 4831 | <<locked>> | 98% | 52,301 psi | 86% | 2710 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 52,286 psi | 86% | 2687 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,868 psi | 90% | 2661 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,794 psi | 87% | 2648 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,243 psi | 86% | 2595 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 53,316 psi | 88% | 2648 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,605 psi | 86% | 2654 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 53,287 psi | 87% | 2684 fps | 98% |
| Norma 201 | <<locked>> | 84% | 52,199 psi | 86% | 2618 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,141 psi | 86% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,461 psi | 88% | 2697 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,476 psi | 89% | 2736 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 45,368 psi | 74% | 2690 fps | 96% |
| Norma URP | <<locked>> | 98% | 54,085 psi | 89% | 2753 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 53,388 psi | 88% | 2717 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 52,678 psi | 86% | 2746 fps | 98.6% |
| Ramshot TAC | <<locked>> | 84% | 54,940 psi | 90% | 2680 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,534 psi | 90% | 2697 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 60% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 51,895 psi | 85% | 2644 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,418 psi | 89% | 2769 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,417 psi | 88% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,694 psi | 90% | 2789 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,114 psi | 89% | 2812 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 53,650 psi | 88% | 2602 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,707 psi | 87% | 2618 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,433 psi | 89% | 2700 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,331 psi | 89% | 2671 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,605 psi | 86% | 2654 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,794 psi | 87% | 2648 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,316 psi | 88% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,287 psi | 87% | 2684 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 52,040 psi | 85% | 2703 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,693 psi | 88% | 2664 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,317 psi | 89% | 2684 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,127 psi | 87% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,011 psi | 87% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,489 psi | 86% | 2602 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 52,808 psi | 87% | 2556 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,084 psi | 87% | 2654 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 54,708 psi | 90% | 2697 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,069 psi | 85% | 2759 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,733 psi | 80% | 2648 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 84% | 53,229 psi | 87% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 52,228 psi | 86% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,562 psi | 86% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,475 psi | 86% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 53,142 psi | 87% | 2700 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 52,127 psi | 86% | 2615 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,041 psi | 89% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 52,489 psi | 86% | 2710 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,889 psi | 74% | 2657 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,156 psi | 87% | 2677 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,085 psi | 90% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,375 psi | 89% | 2762 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,970 psi | 61% | 2598 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,041 psi | 89% | 2694 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,140 psi | 84% | 2530 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,034 psi | 74% | 2480 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,908 psi | 84% | 2612 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,484 psi | 75% | 2487 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 38,058 psi | 62% | 2461 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 42,467 psi | 70% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,444 psi | 52% | 2326 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,920 psi | 77% | 2569 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,958 psi | 66% | 2431 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,791 psi | 80% | 2572 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,356 psi | 81% | 2552 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,554 psi | 70% | 2605 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,016 psi | 66% | 2461 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,757 psi | 70% | 2516 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,330 psi | 55% | 2372 fps | 95.6% |
| Alliant Reloder-17 | 69.5 gr | 80% | 34,664 psi | 57% | 2438 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,312 psi | 48% | 2297 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,230 psi | 58% | 2510 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,788 psi | 75% | 2572 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 40,118 psi | 66% | 2470 fps | 99.4% |
| Bofors RP7 | <<locked>> | 88% | 45,556 psi | 75% | 2526 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,430 psi | 83% | 2556 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,935 psi | 79% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,567 psi | 67% | 2467 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 42,322 psi | 69% | 2556 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 90% | 48,747 psi | 80% | 2621 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,398 psi | 78% | 2582 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,138 psi | 48% | 2238 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,105 psi | 71% | 2556 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 44,802 psi | 74% | 2625 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 44% | 1453 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,266 psi | 74% | 2533 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 47,036 psi | 77% | 2569 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,974 psi | 69% | 2461 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,280 psi | 73% | 2477 fps | 95.9% |
| IMR 4350 | <<locked>> | 92% | 45,324 psi | 74% | 2549 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,872 psi | 69% | 2461 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 32,314 psi | 53% | 2333 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 43,801 psi | 72% | 2546 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 48,791 psi | 80% | 2572 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,557 psi | 76% | 2556 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,630 psi | 77% | 2503 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 42,409 psi | 70% | 2470 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 37,246 psi | 61% | 2372 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 42,235 psi | 69% | 2493 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 46,398 psi | 76% | 2526 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,398 psi | 76% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,192 psi | 69% | 2507 fps | 99.1% |
| Norma 204 | <<locked>> | 96% | 51,126 psi | 84% | 2684 fps | 95.5% |
| Norma MRP | <<locked>> | 98% | 42,670 psi | 70% | 2638 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 33,388 psi | 55% | 2365 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 41,408 psi | 68% | 2516 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 39,030 psi | 64% | 2497 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 48,675 psi | 80% | 2582 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,138 psi | 79% | 2602 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 45% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,727 psi | 67% | 2448 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,657 psi | 73% | 2612 fps | 99.1% |
| ReloadSwiss RS 60 | 69.5 gr | 80% | 36,695 psi | 60% | 2497 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,909 psi | 54% | 2382 fps | 95% |
| ReloadSwiss RS 70 | 75.9 gr | 86% | 37,086 psi | 61% | 2484 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 50,908 psi | 84% | 2562 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,367 psi | 73% | 2484 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 37,840 psi | 62% | 2418 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 45,556 psi | 75% | 2526 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,246 psi | 61% | 2372 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,557 psi | 76% | 2556 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,409 psi | 70% | 2470 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 42,235 psi | 69% | 2493 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,116 psi | 63% | 2457 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,340 psi | 78% | 2562 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,179 psi | 74% | 2539 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,311 psi | 78% | 2470 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,697 psi | 65% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,118 psi | 68% | 2411 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,050 psi | 77% | 2474 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,673 psi | 77% | 2556 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 38,464 psi | 63% | 2418 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 28,558 psi | 47% | 2280 fps | 97.2% |
| Somchem S385 | <<locked>> | 98% | 45,919 psi | 75% | 2598 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 47,500 psi | 78% | 2461 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,729 psi | 72% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,830 psi | 72% | 2467 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,477 psi | 60% | 2356 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 32,721 psi | 54% | 2316 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 48,950 psi | 80% | 2569 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,482 psi | 70% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,287 psi | 56% | 2369 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 88% | 31,473 psi | 52% | 2372 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,343 psi | 53% | 2290 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 48,617 psi | 80% | 2615 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,496 psi | 70% | 2559 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,370 psi | 48% | 2372 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,788 psi | 74% | 2549 fps | 99.7% |
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 94 powders for .375 Blaser Mag. loaded with the .375 | 270gr | Barnes XLC S. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,822 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .375 Blaser Mag. with the .375 | 270gr | Barnes XLC S they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.