Load Specifications
Load data in caliber .260 Rem. with .264 | 140gr | Lapua Naturalis bullet and 97 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-16 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>> | 84% | 53,185 psi | 88% | 2546 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,940 psi | 90% | 2585 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,209 psi | 77% | 2566 fps | 98.1% |
| Accurate 4064 | <<locked>> | 86% | 53,011 psi | 88% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,011 psi | 86% | 2671 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 52,272 psi | 87% | 2608 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 52,837 psi | 88% | 2608 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,316 psi | 89% | 2697 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,302 psi | 90% | 2605 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,372 psi | 85% | 2717 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,924 psi | 88% | 2694 fps | 97% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,924 psi | 88% | 2694 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,287 psi | 89% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,795 psi | 89% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,750 psi | 88% | 2720 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,751 psi | 89% | 2749 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,170 psi | 87% | 2687 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,569 psi | 72% | 2589 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,508 psi | 64% | 2500 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,023 psi | 81% | 2756 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,692 psi | 86% | 2625 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 54,317 psi | 90% | 2651 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,027 psi | 90% | 2628 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,911 psi | 90% | 2638 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,401 psi | 85% | 2615 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 54,360 psi | 90% | 2717 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 51,343 psi | 85% | 2625 fps | 97% |
| Hodgdon H4895 | <<locked>> | 82% | 52,779 psi | 88% | 2618 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,866 psi | 88% | 2651 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,243 psi | 87% | 2651 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,317 psi | 90% | 2746 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,143 psi | 60% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,461 psi | 89% | 2615 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,982 psi | 88% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 52,562 psi | 87% | 2592 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,214 psi | 87% | 2575 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 54,085 psi | 90% | 2651 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,388 psi | 87% | 2605 fps | 98.2% |
| IMR 4831 | <<locked>> | 96% | 52,402 psi | 87% | 2661 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 51,764 psi | 86% | 2631 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,302 psi | 90% | 2605 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,359 psi | 87% | 2589 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,430 psi | 85% | 2536 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 52,866 psi | 88% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,040 psi | 86% | 2602 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 52,997 psi | 88% | 2638 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,783 psi | 64% | 2431 fps | 96.4% |
| Norma 201 | <<locked>> | 82% | 51,285 psi | 85% | 2559 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,605 psi | 86% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,069 psi | 88% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,288 psi | 90% | 2694 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 48,559 psi | 81% | 2710 fps | 97.7% |
| Norma URP | <<locked>> | 94% | 51,024 psi | 85% | 2657 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 53,272 psi | 89% | 2664 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 52,765 psi | 88% | 2700 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 54,128 psi | 90% | 2625 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,128 psi | 90% | 2644 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,825 psi | 61% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,474 psi | 86% | 2595 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,157 psi | 90% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,534 psi | 89% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 51,634 psi | 86% | 2694 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,070 psi | 90% | 2766 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 51,750 psi | 86% | 2559 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,172 psi | 90% | 2644 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,198 psi | 85% | 2674 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 54,027 psi | 90% | 2628 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,040 psi | 86% | 2602 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,359 psi | 87% | 2589 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,866 psi | 88% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,997 psi | 88% | 2638 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 51,938 psi | 86% | 2651 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,852 psi | 88% | 2605 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,664 psi | 89% | 2628 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,417 psi | 87% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,533 psi | 87% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,054 psi | 86% | 2559 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,705 psi | 84% | 2667 fps | 96.8% |
| Somchem S335 | <<locked>> | 82% | 51,924 psi | 86% | 2497 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,649 psi | 87% | 2598 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,360 psi | 90% | 2641 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,489 psi | 87% | 2707 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,098 psi | 87% | 2657 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 52,721 psi | 88% | 2484 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 51,779 psi | 86% | 2526 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,851 psi | 86% | 2536 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,098 psi | 87% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,040 psi | 88% | 2648 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,860 psi | 75% | 2526 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 86% | 53,432 psi | 89% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,330 psi | 87% | 2661 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,472 psi | 81% | 2661 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 52,823 psi | 88% | 2625 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,360 psi | 90% | 2717 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,175 psi | 65% | 2618 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,621 psi | 89% | 2638 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,733 psi | 81% | 2592 fps | 95.9% |
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 2495 | <<locked>> | 80% | 46,920 psi | 78% | 2461 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,643 psi | 74% | 2438 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 35,723 psi | 59% | 2369 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 44,367 psi | 74% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,924 psi | 55% | 2316 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,023 psi | 81% | 2559 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,771 psi | 69% | 2425 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 47,079 psi | 78% | 2595 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,952 psi | 85% | 2559 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,034 psi | 75% | 2608 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,876 psi | 78% | 2595 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,876 psi | 78% | 2595 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,105 psi | 70% | 2454 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,730 psi | 74% | 2507 fps | 99.5% |
| Alliant Reloder-16 | 33.5 gr | 80% | 32,692 psi | 54% | 2323 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,390 psi | 60% | 2441 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,238 psi | 77% | 2585 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,296 psi | 45% | 2205 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,272 psi | 57% | 2398 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,706 psi | 54% | 2408 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,196 psi | 80% | 2569 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,076 psi | 70% | 2461 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 42,496 psi | 71% | 2434 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,560 psi | 84% | 2592 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,612 psi | 71% | 2464 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 39,537 psi | 66% | 2457 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 45,542 psi | 76% | 2526 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 49,487 psi | 82% | 2569 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,342 psi | 50% | 2234 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,861 psi | 76% | 2552 fps | 100% |
| Hodgdon Superformance | 41 gr | 86% | 41,350 psi | 69% | 2520 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 45% | 1437 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,355 psi | 79% | 2523 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,864 psi | 83% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,903 psi | 73% | 2454 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,383 psi | 77% | 2477 fps | 97.2% |
| IMR 4350 | <<locked>> | 88% | 42,598 psi | 71% | 2461 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,754 psi | 64% | 2359 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 31,879 psi | 53% | 2280 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 45,847 psi | 76% | 2533 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 50,952 psi | 85% | 2559 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,110 psi | 82% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,602 psi | 81% | 2493 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,295 psi | 74% | 2461 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,695 psi | 61% | 2323 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 39,175 psi | 65% | 2395 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 36,564 psi | 61% | 2385 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 48,486 psi | 81% | 2516 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,747 psi | 81% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,135 psi | 73% | 2497 fps | 99.7% |
| Norma 204 | <<locked>> | 92% | 47,921 psi | 80% | 2592 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 39,972 psi | 66% | 2543 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,866 psi | 55% | 2313 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,888 psi | 73% | 2516 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,260 psi | 60% | 2398 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,850 psi | 84% | 2575 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,778 psi | 84% | 2595 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,441 psi | 46% | 1470 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,641 psi | 71% | 2444 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,384 psi | 79% | 2608 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,609 psi | 64% | 2493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,547 psi | 54% | 2333 fps | 95.8% |
| ReloadSwiss RS 70 | 37.6 gr | 82% | 34,330 psi | 57% | 2382 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 46,195 psi | 77% | 2474 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,552 psi | 66% | 2408 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 96% | 45,121 psi | 75% | 2572 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 42,496 psi | 71% | 2434 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,695 psi | 61% | 2323 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,110 psi | 82% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,295 psi | 74% | 2461 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,175 psi | 65% | 2395 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,089 psi | 67% | 2451 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,632 psi | 82% | 2559 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,340 psi | 79% | 2530 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,066 psi | 82% | 2451 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,234 psi | 69% | 2333 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,189 psi | 63% | 2316 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,701 psi | 74% | 2566 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 49,124 psi | 82% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,052 psi | 81% | 2546 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,292 psi | 67% | 2411 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,675 psi | 49% | 2274 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 40,480 psi | 67% | 2457 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 49,385 psi | 82% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,672 psi | 76% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,861 psi | 76% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,145 psi | 63% | 2346 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,171 psi | 57% | 2313 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 42,366 psi | 70% | 2480 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 44,541 psi | 74% | 2451 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,924 psi | 56% | 2320 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 29,283 psi | 49% | 2270 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,620 psi | 56% | 2287 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 39,537 psi | 66% | 2457 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,224 psi | 45% | 2277 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,210 psi | 78% | 2539 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,556 psi | 76% | 2539 fps | 95.1% |
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 97 powders for .260 Rem. loaded with the .264 | 140gr | Lapua Naturalis. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,766 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 140.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, Hodgdon Superformance rank at the top here: for .260 Rem. with the .264 | 140gr | Lapua Naturalis 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.