Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:245 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.340 Weath. Mag. load data
Case Length (l3):2.825"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:100 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:10.0
Load data in caliber .340 Weath. Mag. with .338 | 245gr | Peregrine Glider GRM bullet and 114 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-17 and ReloadSwiss RS 60.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 57,000 psi | 89% | 2533 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,956 psi | 88% | 2559 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,766 psi | 86% | 2589 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,746 psi | 73% | 2566 fps | 99.2% |
| Accurate 4064 | <<locked>> | 88% | 56,130 psi | 88% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,695 psi | 89% | 2717 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 51,358 psi | 80% | 2753 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 84% | 56,188 psi | 88% | 2644 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,246 psi | 90% | 2651 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2710 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 48,733 psi | 76% | 2644 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,926 psi | 86% | 2592 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,565 psi | 89% | 2556 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,362 psi | 88% | 2772 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,302 psi | 85% | 2707 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,725 psi | 90% | 2667 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,708 psi | 86% | 2648 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,740 psi | 90% | 2769 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,463 psi | 87% | 2749 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,505 psi | 84% | 2700 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 2644 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,396 psi | 70% | 2592 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,711 psi | 61% | 2513 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,285 psi | 79% | 2766 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,275 psi | 88% | 2671 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 43,265 psi | 68% | 2575 fps | 96.4% |
| Bofors RP3 | <<locked>> | 88% | 54,737 psi | 86% | 2638 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 2644 fps | 97.5% |
| Bofors RP7 | <<locked>> | 92% | 54,621 psi | 86% | 2628 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,376 psi | 88% | 2572 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,505 psi | 85% | 2625 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,521 psi | 87% | 2657 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 55,854 psi | 88% | 2723 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 92% | 56,159 psi | 88% | 2687 fps | 98.9% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 52,373 psi | 82% | 2651 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2635 fps | 96% |
| Hodgdon H4895 | <<locked>> | 84% | 56,782 psi | 89% | 2654 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,360 psi | 85% | 2648 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,739 psi | 89% | 2690 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,028 psi | 88% | 2762 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 56% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,476 psi | 85% | 2612 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,246 psi | 90% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,768 psi | 89% | 2631 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,420 psi | 88% | 2625 fps | 99.6% |
| IMR 4350 | <<locked>> | 96% | 55,361 psi | 87% | 2657 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,434 psi | 88% | 2654 fps | 99.5% |
| IMR 4831 | <<locked>> | 98% | 57,145 psi | 90% | 2707 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,144 psi | 88% | 2674 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2644 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 82% | 54,926 psi | 86% | 2592 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,347 psi | 88% | 2618 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,259 psi | 87% | 2572 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,768 psi | 89% | 2625 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,043 psi | 88% | 2648 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 57,217 psi | 90% | 2687 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2431 fps | 97.8% |
| Norma 201 | <<locked>> | 84% | 54,810 psi | 86% | 2589 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,492 psi | 87% | 2585 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,348 psi | 90% | 2677 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,970 psi | 88% | 2707 fps | 98.6% |
| Norma MRPᴾ | <<locked>> | 100% | 49,719 psi | 78% | 2723 fps | 99.1% |
| Norma URP | <<locked>> | 96% | 55,753 psi | 87% | 2707 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,447 psi | 85% | 2657 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,404 psi | 85% | 2710 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 40,799 psi | 64% | 2510 fps | 96.4% |
| Ramshot TAC | <<locked>> | 82% | 55,042 psi | 86% | 2625 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,940 psi | 86% | 2635 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 57% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,709 psi | 87% | 2644 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,448 psi | 87% | 2710 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,187 psi | 86% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,739 psi | 89% | 2746 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,666 psi | 87% | 2776 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,622 psi | 87% | 2566 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,332 psi | 87% | 2589 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,853 psi | 86% | 2635 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2684 fps | 97.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 2684 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 92% | 54,621 psi | 86% | 2628 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,043 psi | 88% | 2648 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,347 psi | 88% | 2618 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,768 psi | 89% | 2625 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,217 psi | 90% | 2687 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,623 psi | 89% | 2694 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,580 psi | 90% | 2657 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,650 psi | 86% | 2621 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,115 psi | 88% | 2523 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,637 psi | 89% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,999 psi | 88% | 2605 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,112 psi | 82% | 2680 fps | 98.4% |
| Somchem S335 | <<locked>> | 84% | 55,550 psi | 87% | 2523 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,305 psi | 90% | 2641 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,824 psi | 86% | 2628 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 54,505 psi | 85% | 2628 fps | 96.6% |
| Somchem S365 | <<locked>> | 98% | 54,273 psi | 85% | 2703 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,127 psi | 83% | 2661 fps | 99% |
| Vihtavuori N133 | <<locked>> | 84% | 56,594 psi | 89% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,709 psi | 87% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,188 psi | 88% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,405 psi | 88% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,505 psi | 85% | 2651 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,716 psi | 72% | 2536 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 82% | 55,463 psi | 87% | 2592 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,725 psi | 90% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,145 psi | 90% | 2707 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2657 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 50,473 psi | 79% | 2713 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,273 psi | 85% | 2625 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,796 psi | 87% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,854 psi | 88% | 2723 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,624 psi | 62% | 2635 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,578 psi | 86% | 2628 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,908 psi | 78% | 2605 fps | 97.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 53,548 psi | 84% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,847 psi | 72% | 2428 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,802 psi | 70% | 2434 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 30,821 psi | 48% | 2260 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,453 psi | 68% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,460 psi | 51% | 2310 fps | 97.7% |
| Accurate High Country | <<locked>> | 96% | 44,643 psi | 70% | 2641 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 49,530 psi | 78% | 2552 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,105 psi | 66% | 2421 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 42,148 psi | 66% | 2503 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 45,745 psi | 72% | 2592 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,706 psi | 81% | 2549 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,997 psi | 83% | 2516 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,730 psi | 72% | 2612 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 39,421 psi | 62% | 2451 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,974 psi | 66% | 2438 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,049 psi | 71% | 2503 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,619 psi | 51% | 2326 fps | 97.9% |
| Alliant Reloder-17 | 61 gr | 80% | 36,448 psi | 57% | 2438 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 38,928 psi | 61% | 2444 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 38,537 psi | 60% | 2484 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 23,380 psi | 37% | 2093 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 30,197 psi | 47% | 2303 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 84% | 28,268 psi | 44% | 2297 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,052 psi | 77% | 2569 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 40,451 psi | 63% | 2523 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 41,814 psi | 66% | 2448 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 38,537 psi | 60% | 2484 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 37,333 psi | 59% | 2329 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,113 psi | 83% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,024 psi | 80% | 2579 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,612 psi | 67% | 2457 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 34,795 psi | 55% | 2356 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 80% | 37,956 psi | 59% | 2375 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 98% | 48,892 psi | 77% | 2598 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 48,008 psi | 75% | 2585 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 50,053 psi | 78% | 2559 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,965 psi | 47% | 2228 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,441 psi | 73% | 2546 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 36,289 psi | 57% | 2415 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 42% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,950 psi | 75% | 2516 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,299 psi | 79% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,237 psi | 69% | 2448 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,659 psi | 73% | 2477 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 35,433 psi | 56% | 2313 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,914 psi | 61% | 2362 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 31,517 psi | 49% | 2270 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 46,224 psi | 72% | 2526 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 47,979 psi | 75% | 2549 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 51,706 psi | 81% | 2549 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,226 psi | 77% | 2526 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,979 psi | 77% | 2484 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,135 psi | 69% | 2444 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,201 psi | 57% | 2313 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 34,490 psi | 54% | 2297 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 31,865 psi | 50% | 2287 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 48,240 psi | 76% | 2500 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,849 psi | 77% | 2497 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,425 psi | 70% | 2490 fps | 100% |
| Norma 204 | <<locked>> | 86% | 39,827 psi | 62% | 2441 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 35,244 psi | 55% | 2441 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 32,866 psi | 52% | 2313 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 44,425 psi | 70% | 2510 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 31,879 psi | 50% | 2297 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 37,840 psi | 59% | 2451 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,474 psi | 81% | 2572 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,517 psi | 81% | 2589 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 43% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,743 psi | 67% | 2441 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,356 psi | 76% | 2608 fps | 100% |
| ReloadSwiss RS 60 | 61 gr | 80% | 38,812 psi | 61% | 2487 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,271 psi | 51% | 2326 fps | 97.3% |
| ReloadSwiss RS 70 | 62 gr | 80% | 31,981 psi | 50% | 2333 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 80% | 52,315 psi | 82% | 2520 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,934 psi | 72% | 2457 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,436 psi | 62% | 2398 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 43,700 psi | 68% | 2484 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 40,176 psi | 63% | 2477 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 37,333 psi | 59% | 2329 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,201 psi | 57% | 2313 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,226 psi | 77% | 2526 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,135 psi | 69% | 2444 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,490 psi | 54% | 2297 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,611 psi | 64% | 2451 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,995 psi | 78% | 2552 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,008 psi | 75% | 2526 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,487 psi | 78% | 2438 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,481 psi | 65% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,404 psi | 55% | 2260 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,798 psi | 62% | 2470 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,066 psi | 77% | 2438 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,879 psi | 78% | 2543 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,972 psi | 63% | 2398 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 47,688 psi | 75% | 2523 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 29,356 psi | 46% | 2270 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 35,694 psi | 56% | 2359 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 50,024 psi | 78% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,948 psi | 72% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,456 psi | 73% | 2441 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,232 psi | 60% | 2339 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,200 psi | 54% | 2310 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 37,608 psi | 59% | 2388 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 51,851 psi | 81% | 2546 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,744 psi | 70% | 2438 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,692 psi | 53% | 2313 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 25,208 psi | 40% | 2162 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 98% | 47,166 psi | 74% | 2654 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,576 psi | 53% | 2287 fps | 99.4% |
| Winchester 748 | <<locked>> | 80% | 52,199 psi | 82% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 34,925 psi | 55% | 2359 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,308 psi | 37% | 2162 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,819 psi | 75% | 2533 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 40,408 psi | 63% | 2444 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 114 powders for .340 Weath. Mag. loaded with the .338 | 245gr | Peregrine Glider GRM. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,776 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,776 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 245.0 gr projectile in 0.338" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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-17, ReloadSwiss RS 60 rank at the top here: for .340 Weath. Mag. with the .338 | 245gr | Peregrine Glider GRM 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.