Load Specifications
Load data in caliber .30-06 Spring. with .311 | 180gr | Norma Semi Soft Point 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 60, Alliant Reloder-17 and Hodgdon H414.
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>> | 82% | 50,459 psi | 86% | 2513 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,025 psi | 89% | 2579 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 50,256 psi | 86% | 2589 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,430 psi | 88% | 2569 fps | 96.2% |
| Accurate 4064 | <<locked>> | 90% | 52,054 psi | 89% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 51,010 psi | 87% | 2684 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 52,562 psi | 89% | 2648 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 50,488 psi | 86% | 2602 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 51,735 psi | 88% | 2602 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 52,344 psi | 89% | 2582 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,011 psi | 89% | 2753 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 50,053 psi | 85% | 2618 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 50,633 psi | 86% | 2638 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,794 psi | 90% | 2743 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 50,444 psi | 86% | 2726 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,550 psi | 64% | 2490 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,901 psi | 71% | 2638 fps | 97.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 52,228 psi | 89% | 2661 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 50,430 psi | 86% | 2631 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 50,879 psi | 87% | 2598 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 50,459 psi | 86% | 2543 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 50,850 psi | 87% | 2628 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,388 psi | 89% | 2717 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 51,648 psi | 88% | 2644 fps | 99% |
| Hodgdon H414 | <<locked>> | 96% | 50,676 psi | 86% | 2684 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 94% | 51,851 psi | 88% | 2651 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 86% | 53,084 psi | 90% | 2657 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,878 psi | 83% | 2625 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,098 psi | 89% | 2684 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 51,358 psi | 87% | 2713 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 60% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 51,140 psi | 87% | 2612 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 52,939 psi | 90% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 49,937 psi | 85% | 2585 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,156 psi | 90% | 2608 fps | 97.4% |
| IMR 4350 | <<locked>> | 98% | 50,836 psi | 87% | 2621 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 52,866 psi | 90% | 2631 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,808 psi | 88% | 2680 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 51,909 psi | 88% | 2664 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 51,735 psi | 88% | 2602 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,112 psi | 89% | 2625 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 52,417 psi | 89% | 2582 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 52,881 psi | 90% | 2628 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 52,170 psi | 89% | 2628 fps | 98.4% |
| Lovex S070 | <<locked>> | 98% | 52,663 psi | 90% | 2654 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 51,561 psi | 88% | 2598 fps | 100% |
| Norma 202 | <<locked>> | 86% | 51,793 psi | 88% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 88% | 49,850 psi | 85% | 2625 fps | 99.7% |
| Norma URP | <<locked>> | 98% | 50,372 psi | 86% | 2674 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 88% | 50,212 psi | 85% | 2648 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,794 psi | 90% | 2723 fps | 98.3% |
| Ramshot TAC | <<locked>> | 84% | 51,938 psi | 88% | 2618 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 51,314 psi | 87% | 2635 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 52,576 psi | 90% | 2602 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,926 psi | 61% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,953 psi | 88% | 2625 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 50,749 psi | 86% | 2697 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 50,183 psi | 85% | 2730 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 50,836 psi | 87% | 2710 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 50,734 psi | 86% | 2730 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 84% | 52,417 psi | 89% | 2579 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 52,040 psi | 89% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 50,256 psi | 86% | 2625 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 50,879 psi | 87% | 2598 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 52,170 psi | 89% | 2628 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,112 psi | 89% | 2625 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 52,881 psi | 90% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 52,663 psi | 90% | 2654 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,054 psi | 89% | 2684 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 50,082 psi | 85% | 2592 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 51,039 psi | 87% | 2621 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,069 psi | 90% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 49,893 psi | 85% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,185 psi | 89% | 2579 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 52,779 psi | 90% | 2631 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 52,504 psi | 89% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 49,850 psi | 85% | 2589 fps | 99.6% |
| Somchem S355 | <<locked>> | 92% | 51,010 psi | 87% | 2625 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,399 psi | 82% | 2680 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 52,982 psi | 90% | 2510 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 50,053 psi | 85% | 2487 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 51,634 psi | 88% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 52,359 psi | 89% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,069 psi | 89% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 52,895 psi | 90% | 2674 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 52,069 psi | 89% | 2602 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 50,546 psi | 86% | 2575 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 51,924 psi | 88% | 2677 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,944 psi | 70% | 2566 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 49,951 psi | 85% | 2608 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 51,793 psi | 88% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 50,923 psi | 87% | 2687 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,649 psi | 57% | 2484 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 50,604 psi | 86% | 2625 fps | 99.9% |
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% | 47,369 psi | 81% | 2470 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,074 psi | 68% | 2402 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,905 psi | 80% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,080 psi | 82% | 2516 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 37,884 psi | 64% | 2395 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,779 psi | 58% | 2372 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 43,685 psi | 74% | 2500 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 36,999 psi | 63% | 2356 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,745 psi | 78% | 2510 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 45,774 psi | 78% | 2497 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,537 psi | 67% | 2523 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,564 psi | 62% | 2379 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,450 psi | 67% | 2441 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,403 psi | 59% | 2385 fps | 95.5% |
| Alliant Reloder-17 | 47 gr | 80% | 31,502 psi | 54% | 2343 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,602 psi | 50% | 2293 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,477 psi | 62% | 2516 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,757 psi | 73% | 2503 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 36,085 psi | 61% | 2379 fps | 98.4% |
| Bofors RP7 | <<locked>> | 92% | 47,790 psi | 81% | 2549 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,514 psi | 81% | 2497 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,382 psi | 76% | 2530 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,863 psi | 83% | 2661 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 80% | 36,999 psi | 63% | 2382 fps | 95.8% |
| Hodgdon H414 | 52.9 gr | 92% | 44,382 psi | 76% | 2575 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 92% | 48,486 psi | 83% | 2598 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 44,106 psi | 75% | 2513 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,602 psi | 50% | 2241 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,001 psi | 68% | 2484 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 94% | 47,732 psi | 81% | 2651 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,295 psi | 45% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,206 psi | 72% | 2464 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 43,424 psi | 74% | 2503 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,841 psi | 66% | 2388 fps | 97.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,063 psi | 75% | 2457 fps | 95.3% |
| IMR 4350 | <<locked>> | 96% | 47,834 psi | 81% | 2572 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,888 psi | 75% | 2484 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 32,822 psi | 56% | 2333 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 40,364 psi | 69% | 2467 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 45,745 psi | 78% | 2510 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 42,540 psi | 72% | 2480 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,627 psi | 74% | 2438 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 38,740 psi | 66% | 2395 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 38,435 psi | 65% | 2388 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 43,729 psi | 74% | 2507 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 42,772 psi | 73% | 2457 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 42,917 psi | 73% | 2464 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,841 psi | 66% | 2431 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 34,301 psi | 58% | 2375 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 38,218 psi | 65% | 2441 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 40,799 psi | 69% | 2516 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 45,600 psi | 78% | 2513 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,904 psi | 76% | 2530 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,284 psi | 84% | 2552 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,629 psi | 45% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,786 psi | 73% | 2470 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,104 psi | 70% | 2533 fps | 98.2% |
| ReloadSwiss RS 60 | 47 gr | 80% | 33,518 psi | 57% | 2405 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,013 psi | 61% | 2441 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,928 psi | 66% | 2507 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 46,630 psi | 79% | 2493 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,582 psi | 69% | 2408 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,084 psi | 58% | 2333 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 47,790 psi | 81% | 2549 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,435 psi | 65% | 2388 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,540 psi | 72% | 2480 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,740 psi | 66% | 2395 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 43,729 psi | 74% | 2507 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,925 psi | 59% | 2375 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,685 psi | 74% | 2487 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,032 psi | 72% | 2470 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,092 psi | 75% | 2411 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,608 psi | 62% | 2290 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,018 psi | 73% | 2434 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 49,385 psi | 84% | 2582 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,743 psi | 74% | 2415 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,584 psi | 74% | 2487 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 34,983 psi | 60% | 2339 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 26,934 psi | 46% | 2224 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 49,777 psi | 85% | 2467 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,382 psi | 76% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,987 psi | 68% | 2395 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,756 psi | 69% | 2405 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,257 psi | 57% | 2280 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 35,810 psi | 61% | 2375 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 45,571 psi | 78% | 2500 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,088 psi | 67% | 2392 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,302 psi | 60% | 2379 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 31,560 psi | 54% | 2362 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,573 psi | 50% | 2205 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 45,368 psi | 77% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 44,672 psi | 76% | 2582 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,631 psi | 50% | 2362 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,495 psi | 71% | 2474 fps | 99.1% |
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 .30-06 Spring. loaded with the .311 | 180gr | Norma Semi Soft Point. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,753 fps. Alliant Reloder-16 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 (405 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.311" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, 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. ReloadSwiss RS 60, Alliant Reloder-17, Hodgdon H414 rank at the top here: for .30-06 Spring. with the .311 | 180gr | Norma Semi Soft Point 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.