Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:183 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 Win. Mag. load data
Case Length (l3):2.62"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:90.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.5
Load data in caliber .300 Win. Mag. with .308 | 183gr | Peregrine VLR-4 bullet and 100 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 Alliant Reloder-26.
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% | 56,072 psi | 90% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,346 psi | 87% | 2740 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2776 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 53,026 psi | 85% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,824 psi | 86% | 2828 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,999 psi | 90% | 2802 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,809 psi | 86% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,172 psi | 88% | 2874 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,707 psi | 85% | 2861 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,736 psi | 85% | 2874 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,375 psi | 87% | 2779 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,665 psi | 88% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,969 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,318 psi | 90% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,418 psi | 87% | 2861 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,343 psi | 82% | 2858 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,341 psi | 78% | 2792 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,163 psi | 68% | 2717 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 2989 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,927 psi | 90% | 2822 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,021 psi | 75% | 2779 fps | 96.8% |
| Bofors RP3 | <<locked>> | 86% | 54,926 psi | 88% | 2792 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,343 psi | 82% | 2858 fps | 97.9% |
| Bofors RP7 | <<locked>> | 90% | 54,607 psi | 88% | 2779 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 86% | 55,608 psi | 89% | 2815 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 52,649 psi | 84% | 2825 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 90% | 56,347 psi | 90% | 2844 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 98% | 53,011 psi | 85% | 2812 fps | 96% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2848 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,129 psi | 88% | 2808 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,171 psi | 85% | 2795 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,605 psi | 84% | 2861 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,244 psi | 87% | 2762 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,359 psi | 86% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,057 psi | 90% | 2776 fps | 99.3% |
| IMR 4350 | <<locked>> | 94% | 55,593 psi | 89% | 2815 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,376 psi | 90% | 2808 fps | 99.3% |
| IMR 4831 | <<locked>> | 94% | 54,244 psi | 87% | 2818 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,115 psi | 90% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,708 psi | 88% | 2802 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,241 psi | 81% | 2831 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 82% | 56,188 psi | 90% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,853 psi | 88% | 2726 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,316 psi | 85% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,304 psi | 90% | 2805 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 54,114 psi | 87% | 2795 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,583 psi | 68% | 2625 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 54,447 psi | 87% | 2743 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,492 psi | 89% | 2743 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,954 psi | 87% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,434 psi | 90% | 2867 fps | 98.3% |
| Norma MRPᴾ | <<locked>> | 100% | 54,607 psi | 88% | 2940 fps | 99.3% |
| Norma URP | <<locked>> | 94% | 56,434 psi | 90% | 2867 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,650 psi | 88% | 2812 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,328 psi | 81% | 2844 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 94% | 55,114 psi | 88% | 2867 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,570 psi | 71% | 2717 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,811 psi | 59% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,637 psi | 89% | 2799 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,753 psi | 89% | 2871 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,782 psi | 89% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,592 psi | 86% | 2848 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,405 psi | 90% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,031 psi | 66% | 2730 fps | 96.8% |
| Rottweil R 902 | <<locked>> | 84% | 55,288 psi | 89% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,042 psi | 88% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,316 psi | 85% | 2789 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 98% | 53,359 psi | 86% | 2841 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 54,607 psi | 88% | 2779 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,304 psi | 90% | 2805 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,188 psi | 90% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 53,316 psi | 85% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,114 psi | 87% | 2795 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,185 psi | 85% | 2799 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,563 psi | 87% | 2776 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,651 psi | 89% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,420 psi | 90% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,043 psi | 90% | 2759 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,881 psi | 85% | 2838 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 55,056 psi | 88% | 2671 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,013 psi | 88% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,940 psi | 88% | 2782 fps | 96.3% |
| Somchem S365 | <<locked>> | 96% | 55,463 psi | 89% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,027 psi | 87% | 2822 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 56,231 psi | 90% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,608 psi | 89% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,883 psi | 90% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,011 psi | 85% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,013 psi | 88% | 2808 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,951 psi | 80% | 2743 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 54,201 psi | 87% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,041 psi | 87% | 2815 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2871 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,042 psi | 88% | 2930 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,781 psi | 88% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,910 psi | 85% | 2828 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,453 psi | 70% | 2844 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,563 psi | 87% | 2782 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,476 psi | 87% | 2818 fps | 98.1% |
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% | 49,240 psi | 79% | 2621 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,601 psi | 76% | 2628 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 33,823 psi | 54% | 2441 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,673 psi | 75% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,273 psi | 57% | 2490 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 80% | 52,562 psi | 84% | 2749 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,744 psi | 72% | 2608 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 42,279 psi | 68% | 2641 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 49,269 psi | 79% | 2799 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,052 psi | 79% | 2812 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,933 psi | 72% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,022 psi | 77% | 2697 fps | 100% |
| Alliant Reloder-16 | 54.4 gr | 80% | 34,780 psi | 56% | 2503 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,334 psi | 63% | 2628 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,945 psi | 67% | 2638 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,959 psi | 67% | 2684 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,208 psi | 40% | 2254 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,547 psi | 52% | 2480 fps | 95.4% |
| Alliant Reloder-26 | 63.1 gr | 84% | 30,821 psi | 49% | 2477 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,286 psi | 84% | 2766 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 41,162 psi | 66% | 2664 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 44,962 psi | 72% | 2638 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,959 psi | 67% | 2684 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 39,827 psi | 64% | 2513 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 45,484 psi | 73% | 2648 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 37,420 psi | 60% | 2536 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 40,625 psi | 65% | 2562 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 96% | 49,298 psi | 79% | 2749 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,779 psi | 83% | 2789 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,314 psi | 52% | 2402 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,806 psi | 80% | 2743 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,218 psi | 63% | 2608 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 43% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,836 psi | 82% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,050 psi | 75% | 2641 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,168 psi | 79% | 2667 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 37,956 psi | 61% | 2493 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,249 psi | 66% | 2546 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 34,026 psi | 55% | 2444 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 49,284 psi | 79% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,153 psi | 77% | 2694 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 46,963 psi | 75% | 2772 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 52,649 psi | 84% | 2723 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,735 psi | 83% | 2680 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,050 psi | 75% | 2638 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,667 psi | 62% | 2493 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 36,869 psi | 59% | 2470 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 32,663 psi | 52% | 2415 fps | 95% |
| Norma 201 | <<locked>> | 80% | 51,271 psi | 82% | 2694 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,011 psi | 83% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,398 psi | 76% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,772 psi | 69% | 2631 fps | 95.3% |
| Norma MRP | <<locked>> | 90% | 38,363 psi | 62% | 2635 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 35,404 psi | 57% | 2487 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 47,587 psi | 76% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 46,659 psi | 75% | 2776 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 34,301 psi | 55% | 2470 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 41,539 psi | 67% | 2657 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 44% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,542 psi | 73% | 2631 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,880 psi | 83% | 2812 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,887 psi | 67% | 2680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,172 psi | 56% | 2507 fps | 97.4% |
| ReloadSwiss RS 70 | 59.5 gr | 80% | 34,301 psi | 55% | 2510 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,218 psi | 61% | 2661 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 48,791 psi | 78% | 2648 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,322 psi | 68% | 2585 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,963 psi | 75% | 2680 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 40,814 psi | 65% | 2618 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 39,827 psi | 64% | 2513 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,667 psi | 62% | 2493 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,649 psi | 84% | 2723 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,050 psi | 75% | 2638 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,869 psi | 59% | 2470 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,540 psi | 70% | 2638 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,024 psi | 82% | 2723 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,373 psi | 84% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,121 psi | 71% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,782 psi | 61% | 2438 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,437 psi | 65% | 2612 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 51,938 psi | 83% | 2628 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,815 psi | 69% | 2589 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,561 psi | 83% | 2726 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 31,821 psi | 51% | 2444 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 38,624 psi | 62% | 2543 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 52,953 psi | 85% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,081 psi | 79% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,356 psi | 79% | 2628 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,828 psi | 65% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,825 psi | 59% | 2490 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 40,799 psi | 65% | 2579 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 47,543 psi | 76% | 2621 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,216 psi | 58% | 2487 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 27,470 psi | 44% | 2326 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 96% | 47,950 psi | 77% | 2808 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,998 psi | 58% | 2461 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 37,608 psi | 60% | 2539 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,222 psi | 40% | 2333 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,937 psi | 82% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,976 psi | 71% | 2644 fps | 95.8% |
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 100 powders for .300 Win. Mag. loaded with the .308 | 183gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,989 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 183.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 183gr | Peregrine VLR-4 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.