Load Specifications
Load data in caliber .300 WSM with .308 | 142gr | IBEX TRD 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 60, Alliant Reloder-17 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% | 56,028 psi | 88% | 2999 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,767 psi | 87% | 3031 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,824 psi | 86% | 3071 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 55,434 psi | 87% | 3074 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,346 psi | 85% | 3140 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 86% | 54,853 psi | 86% | 3091 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 92% | 55,506 psi | 87% | 3084 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,029 psi | 89% | 3094 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,389 psi | 85% | 3025 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,493 psi | 90% | 3264 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,782 psi | 87% | 3114 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,260 psi | 88% | 3133 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 3186 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,115 psi | 88% | 3232 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,074 psi | 63% | 2907 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,701 psi | 70% | 3068 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,157 psi | 85% | 3094 fps | 98.9% |
| Bofors RP3 | <<locked>> | 92% | 56,710 psi | 89% | 3133 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,434 psi | 88% | 3084 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,390 psi | 87% | 3025 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,666 psi | 89% | 3127 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,375 psi | 85% | 3163 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 84% | 56,840 psi | 89% | 3081 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,537 psi | 90% | 3140 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 94% | 54,534 psi | 85% | 3146 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 86% | 55,390 psi | 87% | 3104 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,271 psi | 80% | 3061 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,302 psi | 85% | 3133 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 57,421 psi | 90% | 3212 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,694 psi | 56% | 1916 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,143 psi | 86% | 3084 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 56,869 psi | 89% | 3120 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,464 psi | 90% | 3107 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,898 psi | 89% | 3068 fps | 96.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3104 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,563 psi | 86% | 3061 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,834 psi | 77% | 3025 fps | 98.1% |
| IMR 4895 | <<locked>> | 90% | 57,566 psi | 90% | 3169 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 57,029 psi | 89% | 3094 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,824 psi | 86% | 3071 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,406 psi | 90% | 3064 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 55,332 psi | 87% | 3074 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,711 psi | 90% | 3114 fps | 98.2% |
| Lovex S070 | <<locked>> | 98% | 55,259 psi | 87% | 3094 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 57,305 psi | 90% | 3094 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,392 psi | 90% | 3091 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,434 psi | 87% | 3120 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 56,420 psi | 88% | 3176 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 55,724 psi | 87% | 3143 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,187 psi | 86% | 3166 fps | 97.6% |
| Ramshot TAC | <<locked>> | 86% | 57,305 psi | 90% | 3104 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,029 psi | 89% | 3130 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,578 psi | 86% | 3038 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,405 psi | 57% | 1965 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,521 psi | 89% | 3074 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,493 psi | 90% | 3114 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,521 psi | 89% | 3205 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,028 psi | 88% | 3238 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,203 psi | 90% | 3215 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3235 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 84% | 55,419 psi | 87% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,549 psi | 85% | 3038 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 94% | 56,463 psi | 88% | 3120 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 56,434 psi | 88% | 3084 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,711 psi | 90% | 3114 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,824 psi | 86% | 3071 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,332 psi | 87% | 3074 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,259 psi | 87% | 3094 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,522 psi | 90% | 3176 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,057 psi | 88% | 3084 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,376 psi | 88% | 3110 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,216 psi | 87% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,998 psi | 86% | 2972 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,926 psi | 86% | 3009 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 55,129 psi | 86% | 3077 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,694 psi | 86% | 2976 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,332 psi | 87% | 3074 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 56,579 psi | 89% | 3117 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,778 psi | 80% | 3123 fps | 100% |
| Unknown powder | <<locked>> | 98% | 57,421 psi | 90% | 3182 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 84% | 56,956 psi | 89% | 2976 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,493 psi | 90% | 3002 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,203 psi | 90% | 3054 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,116 psi | 90% | 3058 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,667 psi | 90% | 3094 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,375 psi | 85% | 3094 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 84% | 56,652 psi | 89% | 3100 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,913 psi | 89% | 3087 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,853 psi | 86% | 3150 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,758 psi | 69% | 2995 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,695 psi | 87% | 3091 fps | 99.9% |
| Winchester 748 | <<locked>> | 82% | 54,491 psi | 85% | 3100 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,534 psi | 85% | 3146 fps | 96.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,390 psi | 57% | 2897 fps | 97.1% |
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 2015 | <<locked>> | 80% | 49,951 psi | 78% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,729 psi | 69% | 2835 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,182 psi | 76% | 2963 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 41,292 psi | 65% | 2825 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 39,204 psi | 61% | 2844 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 45,803 psi | 72% | 2923 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 38,972 psi | 61% | 2759 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,674 psi | 75% | 2933 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 47,834 psi | 75% | 2927 fps | 100% |
| Alliant Power Pro 2000-MR | 56.7 gr | 80% | 41,408 psi | 65% | 2940 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,928 psi | 61% | 2792 fps | 97.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,655 psi | 65% | 2854 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 38,609 psi | 61% | 2844 fps | 95.3% |
| Alliant Reloder-17 | 55.9 gr | 80% | 33,837 psi | 53% | 2746 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 33,808 psi | 53% | 2740 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 41,756 psi | 65% | 2999 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,657 psi | 70% | 2917 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 38,899 psi | 61% | 2799 fps | 97.9% |
| Bofors RP7 | <<locked>> | 94% | 53,200 psi | 83% | 3028 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,342 psi | 77% | 2920 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,673 psi | 73% | 2956 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,966 psi | 80% | 3104 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 50,299 psi | 79% | 2976 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,523 psi | 62% | 2792 fps | 95% |
| Hodgdon H414 | <<locked>> | 90% | 47,906 psi | 75% | 3025 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 46,267 psi | 73% | 2940 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 33,707 psi | 53% | 2680 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,668 psi | 62% | 2848 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 96% | 53,737 psi | 84% | 3150 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 42% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,959 psi | 64% | 2815 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 42,134 psi | 66% | 2871 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,348 psi | 60% | 2736 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 90% | 50,879 psi | 80% | 2963 fps | 95.6% |
| IMR 4350 | <<locked>> | 98% | 53,011 psi | 83% | 3048 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,561 psi | 81% | 3005 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 38,479 psi | 60% | 2812 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 42,670 psi | 67% | 2890 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 47,674 psi | 75% | 2933 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 45,310 psi | 71% | 2910 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 45,469 psi | 71% | 2854 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 41,205 psi | 65% | 2808 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 43,178 psi | 68% | 2844 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 49,124 psi | 77% | 2986 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 45,281 psi | 71% | 2881 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 45,194 psi | 71% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,075 psi | 64% | 2844 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 38,972 psi | 61% | 2838 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 40,234 psi | 63% | 2848 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 45,672 psi | 72% | 2986 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 47,471 psi | 74% | 2930 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,036 psi | 74% | 2956 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,372 psi | 81% | 2982 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 43% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,069 psi | 83% | 3018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 47,950 psi | 75% | 2943 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,323 psi | 68% | 2959 fps | 97.4% |
| ReloadSwiss RS 60 | 55.9 gr | 80% | 35,810 psi | 56% | 2815 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,147 psi | 64% | 2913 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,874 psi | 69% | 2979 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 49,559 psi | 78% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,366 psi | 68% | 2835 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 36,825 psi | 58% | 2740 fps | 97% |
| Rottweil R 907 | <<locked>> | 94% | 53,200 psi | 83% | 3028 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,178 psi | 68% | 2844 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,310 psi | 71% | 2910 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 41,205 psi | 65% | 2808 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 49,124 psi | 77% | 2986 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,159 psi | 58% | 2779 fps | 96.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,166 psi | 72% | 2907 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,164 psi | 69% | 2887 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,224 psi | 72% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,682 psi | 61% | 2687 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,385 psi | 76% | 2897 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 51,547 psi | 81% | 3018 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 45,977 psi | 72% | 2831 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,571 psi | 71% | 2900 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 37,463 psi | 59% | 2743 fps | 96.9% |
| Somchem S365 | <<locked>> | 82% | 29,428 psi | 46% | 2615 fps | 95.1% |
| Unknown powder | <<locked>> | 88% | 42,003 psi | 66% | 2894 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 50,821 psi | 80% | 2884 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,555 psi | 68% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,467 psi | 67% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,250 psi | 66% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,242 psi | 51% | 2592 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 86% | 39,595 psi | 62% | 2812 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 50,212 psi | 79% | 2992 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 41,959 psi | 66% | 2828 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 40,234 psi | 63% | 2861 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 36,492 psi | 57% | 2828 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 33,750 psi | 53% | 2641 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 50,865 psi | 80% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 47,906 psi | 75% | 3025 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 34,287 psi | 54% | 2828 fps | 95.9% |
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 .300 WSM loaded with the .308 | 142gr | IBEX TRD. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,264 fps. Alliant Reloder-16 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .308 | 142gr | IBEX TRD 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.