Load Specifications
Load data in caliber .260 Rem. with .264 | 156gr | Norma Soft Point ALASKA 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.
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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 2495 | <<locked>> | 82% | 52,663 psi | 87% | 2415 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,766 psi | 89% | 2477 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,241 psi | 83% | 2513 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 52,837 psi | 88% | 2461 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,808 psi | 88% | 2559 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 52,098 psi | 87% | 2641 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 53,258 psi | 88% | 2493 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,882 psi | 90% | 2598 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,532 psi | 86% | 2592 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,909 psi | 86% | 2602 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,708 psi | 89% | 2595 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,708 psi | 89% | 2595 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,795 psi | 89% | 2513 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,969 psi | 90% | 2533 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,679 psi | 89% | 2608 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,416 psi | 85% | 2585 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,953 psi | 88% | 2585 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,067 psi | 83% | 2589 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,413 psi | 79% | 2536 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,394 psi | 69% | 2467 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,838 psi | 89% | 2707 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,847 psi | 76% | 2520 fps | 97.1% |
| Bofors RP3 | <<locked>> | 86% | 54,404 psi | 90% | 2526 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,067 psi | 83% | 2589 fps | 98.1% |
| Bofors RP7 | <<locked>> | 90% | 53,882 psi | 90% | 2513 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 51,387 psi | 85% | 2497 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 51,808 psi | 86% | 2559 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 51,967 psi | 86% | 2523 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 51,721 psi | 86% | 2543 fps | 96.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,099 psi | 90% | 2579 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,940 psi | 90% | 2539 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,344 psi | 87% | 2526 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 40,611 psi | 67% | 2490 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 90% | 51,256 psi | 85% | 2589 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 60% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,519 psi | 89% | 2493 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,547 psi | 87% | 2474 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,982 psi | 86% | 2461 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 51,358 psi | 85% | 2500 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,330 psi | 87% | 2493 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 53,243 psi | 88% | 2552 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 51,880 psi | 86% | 2510 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,548 psi | 89% | 2536 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 48,979 psi | 81% | 2562 fps | 96.4% |
| Lovex S062 | <<locked>> | 84% | 52,765 psi | 88% | 2470 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,301 psi | 87% | 2493 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 53,388 psi | 89% | 2530 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,785 psi | 69% | 2382 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 54,360 psi | 90% | 2480 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,258 psi | 88% | 2520 fps | 100% |
| Norma 204 | <<locked>> | 92% | 51,488 psi | 86% | 2539 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 52,881 psi | 88% | 2664 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 51,880 psi | 86% | 2549 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,693 psi | 89% | 2543 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,240 psi | 82% | 2579 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 94% | 53,751 psi | 89% | 2595 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,700 psi | 73% | 2467 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 62% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,488 psi | 86% | 2484 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 50,720 psi | 84% | 2575 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,344 psi | 87% | 2579 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,010 psi | 85% | 2602 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,205 psi | 67% | 2480 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 82% | 51,445 psi | 85% | 2434 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,244 psi | 90% | 2520 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,446 psi | 87% | 2523 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 52,156 psi | 87% | 2575 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 90% | 53,882 psi | 90% | 2513 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,301 psi | 87% | 2493 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 52,765 psi | 88% | 2470 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,388 psi | 89% | 2530 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,388 psi | 87% | 2533 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,766 psi | 89% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,373 psi | 87% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,779 psi | 86% | 2448 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,677 psi | 86% | 2569 fps | 98.3% |
| Somchem S355 | <<locked>> | 88% | 54,389 psi | 90% | 2516 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 53,809 psi | 89% | 2516 fps | 96.6% |
| Somchem S365 | <<locked>> | 96% | 53,925 psi | 90% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,837 psi | 88% | 2552 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 51,880 psi | 86% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,851 psi | 86% | 2411 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,185 psi | 87% | 2451 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,882 psi | 90% | 2539 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,646 psi | 81% | 2480 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 53,403 psi | 89% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,040 psi | 88% | 2549 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,098 psi | 88% | 2602 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,417 psi | 89% | 2654 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,432 psi | 89% | 2513 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 51,808 psi | 86% | 2559 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,670 psi | 71% | 2585 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,853 psi | 89% | 2513 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,852 psi | 88% | 2546 fps | 98.2% |
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 2495 | <<locked>> | 80% | 49,269 psi | 82% | 2372 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,326 psi | 79% | 2379 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 31,473 psi | 52% | 2178 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,688 psi | 78% | 2379 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,302 psi | 59% | 2267 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 98% | 48,718 psi | 81% | 2585 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 44,164 psi | 73% | 2356 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 39,334 psi | 65% | 2349 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 45,121 psi | 75% | 2484 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,196 psi | 80% | 2546 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 39,305 psi | 65% | 2349 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 39,305 psi | 65% | 2349 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,614 psi | 74% | 2382 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,747 psi | 79% | 2441 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,563 psi | 57% | 2274 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,015 psi | 65% | 2385 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 38,885 psi | 65% | 2346 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 38,725 psi | 64% | 2385 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,338 psi | 42% | 2064 fps | 96.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,327 psi | 50% | 2211 fps | 95.2% |
| Alliant Reloder-26 | 38.6 gr | 82% | 28,485 psi | 47% | 2205 fps | 95.4% |
| Bofors RP15 | <<locked>> | 96% | 40,495 psi | 67% | 2421 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 44,541 psi | 74% | 2388 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 38,725 psi | 64% | 2385 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,552 psi | 66% | 2277 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,078 psi | 75% | 2398 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 37,275 psi | 62% | 2306 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 40,147 psi | 67% | 2323 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 48,370 psi | 80% | 2490 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 47,326 psi | 79% | 2474 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,126 psi | 53% | 2182 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,037 psi | 81% | 2480 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,101 psi | 63% | 2431 fps | 95.1% |
| Hodgdon Superformance | 38.9 gr | 80% | 36,172 psi | 60% | 2313 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 45% | 1371 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,154 psi | 83% | 2448 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,456 psi | 77% | 2385 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,791 psi | 81% | 2411 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 35,404 psi | 59% | 2218 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,901 psi | 68% | 2303 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 33,895 psi | 56% | 2224 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 48,950 psi | 81% | 2467 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 47,485 psi | 79% | 2441 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 45,847 psi | 76% | 2510 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 46,731 psi | 78% | 2382 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,580 psi | 64% | 2264 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 36,811 psi | 61% | 2247 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 30,545 psi | 51% | 2156 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 50,966 psi | 85% | 2434 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,094 psi | 78% | 2431 fps | 100% |
| Norma 204 | <<locked>> | 84% | 39,494 psi | 66% | 2336 fps | 95% |
| Norma MRP | <<locked>> | 88% | 35,273 psi | 59% | 2343 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 35,244 psi | 59% | 2264 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 80% | 46,847 psi | 78% | 2444 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 45,585 psi | 76% | 2516 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 34,069 psi | 57% | 2251 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 96% | 37,811 psi | 63% | 2356 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 46% | 1404 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,324 psi | 75% | 2388 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,481 psi | 69% | 2431 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,737 psi | 58% | 2280 fps | 98% |
| ReloadSwiss RS 70 | 37.3 gr | 80% | 33,997 psi | 56% | 2283 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,376 psi | 62% | 2418 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 48,559 psi | 81% | 2392 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,192 psi | 70% | 2346 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 43,381 psi | 72% | 2379 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 40,059 psi | 67% | 2372 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,552 psi | 66% | 2277 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,580 psi | 64% | 2264 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 46,731 psi | 78% | 2382 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,811 psi | 61% | 2247 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,076 psi | 72% | 2392 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,488 psi | 84% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,859 psi | 73% | 2260 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,594 psi | 62% | 2211 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 39,682 psi | 66% | 2369 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 42,569 psi | 71% | 2343 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 47,079 psi | 78% | 2415 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 31,749 psi | 53% | 2228 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 35,911 psi | 60% | 2264 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 48,878 psi | 81% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,950 psi | 81% | 2375 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,640 psi | 68% | 2283 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,666 psi | 61% | 2264 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 37,565 psi | 62% | 2290 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,050 psi | 78% | 2369 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,940 psi | 60% | 2260 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 27,601 psi | 46% | 2129 fps | 96.5% |
| Vihtavuori N560 | <<locked>> | 96% | 46,862 psi | 78% | 2546 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,665 psi | 59% | 2234 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 37,275 psi | 62% | 2306 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,743 psi | 39% | 2083 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,502 psi | 84% | 2470 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,161 psi | 67% | 2343 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 94 powders for .260 Rem. loaded with the .264 | 156gr | Norma Soft Point ALASKA. Alliant Reloder-26 delivers the highest muzzle velocity at 2,707 fps; across all powders the maximum-charge window runs from 1,539 fps to 2,707 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 (415 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.264" calls for a 1:10.5 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 .260 Rem. with the .264 | 156gr | Norma Soft Point ALASKA 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.