Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:150 gr
Bullet Diameter:0.307"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 WSM with .307 | 150gr | Rhino Penetrator bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 54,462 psi | 85% | 2920 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,333 psi | 88% | 2992 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,608 psi | 89% | 2989 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,926 psi | 86% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,130 psi | 88% | 2982 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 56,492 psi | 89% | 3035 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3120 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 57,087 psi | 89% | 3071 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 54,708 psi | 86% | 3015 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,130 psi | 88% | 3022 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,927 psi | 89% | 2999 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,072 psi | 89% | 3199 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,665 psi | 86% | 3038 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,334 psi | 90% | 2969 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,114 psi | 86% | 3058 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 3120 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,506 psi | 87% | 3163 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2831 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,250 psi | 68% | 2992 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,145 psi | 90% | 3087 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 55,143 psi | 86% | 3054 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,492 psi | 87% | 3018 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,447 psi | 85% | 2953 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,521 psi | 87% | 3051 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,653 psi | 90% | 3156 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 56,565 psi | 89% | 3015 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,231 psi | 88% | 3064 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 55,825 psi | 87% | 3114 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 96% | 56,391 psi | 88% | 3071 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 88% | 57,638 psi | 90% | 3081 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,270 psi | 79% | 2989 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,174 psi | 90% | 3117 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,884 psi | 89% | 3153 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,418 psi | 56% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,347 psi | 87% | 3028 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 57,537 psi | 90% | 3064 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,653 psi | 90% | 3051 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,595 psi | 90% | 3028 fps | 97.6% |
| IMR 4198 | <<locked>> | 82% | 57,319 psi | 90% | 2930 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 3041 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,392 psi | 90% | 3054 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 3051 fps | 99.2% |
| IMR 4895 | <<locked>> | 90% | 56,521 psi | 89% | 3091 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 56,130 psi | 88% | 3022 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,449 psi | 88% | 3005 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,985 psi | 89% | 3048 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,536 psi | 89% | 2995 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 57,334 psi | 90% | 3048 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,681 psi | 89% | 3045 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,638 psi | 90% | 3081 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 55,709 psi | 87% | 3012 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,463 psi | 88% | 3018 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,288 psi | 85% | 3045 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 55,477 psi | 87% | 3107 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 90% | 55,085 psi | 86% | 3074 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3097 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 56,594 psi | 89% | 3038 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,101 psi | 88% | 3058 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,029 psi | 89% | 3022 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 56% | 1913 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,564 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,507 psi | 89% | 3045 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,564 psi | 87% | 3130 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,288 psi | 87% | 3166 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,246 psi | 88% | 3140 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3173 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 56,710 psi | 89% | 2995 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,318 psi | 88% | 3012 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,013 psi | 86% | 3041 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,492 psi | 87% | 3018 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,681 psi | 89% | 3045 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,985 psi | 89% | 3048 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 57,334 psi | 90% | 3048 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,638 psi | 90% | 3081 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,029 psi | 89% | 3110 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,056 psi | 86% | 3015 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,463 psi | 87% | 3038 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,305 psi | 90% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,551 psi | 90% | 2946 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,145 psi | 90% | 2995 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 57,537 psi | 90% | 3054 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,565 psi | 89% | 2946 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,346 psi | 85% | 3002 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 55,506 psi | 87% | 3045 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,922 psi | 78% | 3054 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,000 psi | 89% | 2913 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,464 psi | 90% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,985 psi | 88% | 2976 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,956 psi | 89% | 2995 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,087 psi | 89% | 3022 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,520 psi | 85% | 3048 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 86% | 56,695 psi | 89% | 3022 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,216 psi | 87% | 2992 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3110 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,206 psi | 66% | 2913 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,100 psi | 86% | 3028 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,695 psi | 89% | 3074 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,101 psi | 88% | 3117 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,679 psi | 54% | 2815 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,419 psi | 87% | 3048 fps | 100% |
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% | 48,240 psi | 76% | 2822 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,692 psi | 83% | 2940 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,857 psi | 64% | 2736 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,921 psi | 75% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,182 psi | 77% | 2867 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,595 psi | 60% | 2726 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 37,202 psi | 58% | 2756 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,440 psi | 70% | 2848 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 37,710 psi | 59% | 2684 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,456 psi | 73% | 2861 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 46,572 psi | 73% | 2848 fps | 100% |
| Alliant Power Pro 2000-MR | 56.9 gr | 80% | 40,422 psi | 63% | 2871 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,289 psi | 58% | 2707 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 54,099 psi | 85% | 2923 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,118 psi | 63% | 2776 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 37,304 psi | 58% | 2772 fps | 95.7% |
| Alliant Reloder-17 | 56 gr | 80% | 32,285 psi | 51% | 2664 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 32,242 psi | 51% | 2657 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,364 psi | 63% | 2927 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,526 psi | 68% | 2844 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 37,072 psi | 58% | 2713 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 48,791 psi | 76% | 2904 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,254 psi | 76% | 2848 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,411 psi | 71% | 2881 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,024 psi | 78% | 3031 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 53,055 psi | 83% | 2963 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,768 psi | 59% | 2710 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 92% | 45,672 psi | 72% | 2933 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 94% | 52,982 psi | 83% | 3015 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 44,817 psi | 70% | 2861 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 32,111 psi | 50% | 2602 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,857 psi | 64% | 2825 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 94% | 49,139 psi | 77% | 3015 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,353 psi | 41% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,931 psi | 67% | 2805 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 44,440 psi | 70% | 2858 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,581 psi | 62% | 2720 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 47,819 psi | 75% | 2858 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 54,070 psi | 85% | 2884 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 49,052 psi | 77% | 2927 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,616 psi | 75% | 2884 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 35,897 psi | 56% | 2707 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 41,104 psi | 64% | 2808 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 46,456 psi | 73% | 2861 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 52,779 psi | 83% | 2949 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,540 psi | 68% | 2828 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 44,338 psi | 69% | 2782 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 39,465 psi | 62% | 2726 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 41,597 psi | 65% | 2769 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 44,788 psi | 70% | 2851 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,468 psi | 68% | 2799 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 43,743 psi | 69% | 2808 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,508 psi | 62% | 2762 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 37,478 psi | 59% | 2759 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,073 psi | 61% | 2772 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 44,672 psi | 70% | 2920 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 46,499 psi | 73% | 2861 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,832 psi | 72% | 2881 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,183 psi | 79% | 2910 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,585 psi | 42% | 1709 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,011 psi | 82% | 2946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,656 psi | 68% | 2812 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,076 psi | 66% | 2881 fps | 97.7% |
| ReloadSwiss RS 60 | 56 gr | 80% | 34,345 psi | 54% | 2736 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,956 psi | 58% | 2769 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,856 psi | 62% | 2844 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 47,398 psi | 74% | 2848 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,437 psi | 65% | 2749 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 34,780 psi | 55% | 2651 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 48,791 psi | 76% | 2904 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,597 psi | 65% | 2769 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,540 psi | 68% | 2828 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 39,465 psi | 62% | 2726 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 92% | 44,788 psi | 70% | 2851 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,679 psi | 56% | 2700 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,788 psi | 70% | 2831 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,859 psi | 67% | 2812 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,846 psi | 70% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,304 psi | 58% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,963 psi | 74% | 2825 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 50,212 psi | 79% | 2940 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 44,396 psi | 70% | 2756 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,295 psi | 69% | 2828 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 35,621 psi | 56% | 2657 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 29,341 psi | 46% | 2582 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 50,604 psi | 79% | 2822 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,165 psi | 71% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,857 psi | 64% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,423 psi | 65% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,852 psi | 53% | 2592 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 36,709 psi | 58% | 2703 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 46,630 psi | 73% | 2854 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,856 psi | 62% | 2726 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 38,595 psi | 60% | 2762 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 34,635 psi | 54% | 2740 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 32,184 psi | 50% | 2562 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 46,282 psi | 73% | 2904 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 45,672 psi | 72% | 2933 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 98% | 32,460 psi | 51% | 2743 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,409 psi | 66% | 2815 fps | 98.7% |
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 WSM loaded with the .307 | 150gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,199 fps. Accurate 4350 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 (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.307" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .307 | 150gr | Rhino Penetrator 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.