Load Specifications
Load data in caliber .300 PRC with .308 | 150gr | RWS Kegelspitz bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, ReloadSwiss RS 70 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 2700 | <<locked>> | 82% | 56,275 psi | 87% | 3100 fps | 98.6% |
| Accurate 3100 | <<locked>> | 98% | 55,883 psi | 86% | 3153 fps | 99.6% |
| Accurate 4064 | <<locked>> | 82% | 56,101 psi | 86% | 3094 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,609 psi | 89% | 3209 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 58,465 psi | 90% | 3307 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 55,782 psi | 86% | 3123 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 58,552 psi | 90% | 3258 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 56,072 psi | 86% | 3248 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,710 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,913 psi | 88% | 3173 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 58,102 psi | 89% | 3268 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,825 psi | 86% | 3232 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,783 psi | 89% | 3241 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,492 psi | 85% | 3241 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,318 psi | 87% | 3225 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,791 psi | 75% | 3150 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,014 psi | 88% | 3320 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,462 psi | 84% | 3219 fps | 97.8% |
| Bofors RP3 | <<locked>> | 84% | 57,986 psi | 89% | 3169 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,492 psi | 85% | 3241 fps | 98.1% |
| Bofors RP7 | <<locked>> | 88% | 57,029 psi | 88% | 3153 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 84% | 58,146 psi | 89% | 3189 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,840 psi | 86% | 3202 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 86% | 55,172 psi | 85% | 3159 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 96% | 56,217 psi | 86% | 3186 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,969 psi | 85% | 3163 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 58,537 psi | 90% | 3186 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,834 psi | 74% | 3189 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 88% | 56,246 psi | 87% | 3238 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 56% | 2014 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 58,711 psi | 90% | 3163 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,551 psi | 89% | 3143 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 58,262 psi | 90% | 3186 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 58,566 psi | 90% | 3182 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 57,783 psi | 89% | 3196 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 58,407 psi | 90% | 3205 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,609 psi | 89% | 3176 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,566 psi | 89% | 3284 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 55,448 psi | 85% | 3100 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,361 psi | 85% | 3120 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 56,869 psi | 87% | 3166 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,574 psi | 76% | 3048 fps | 98.9% |
| Norma 203B | <<locked>> | 82% | 56,260 psi | 87% | 3159 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,637 psi | 86% | 3182 fps | 97.8% |
| Norma MRP | <<locked>> | 96% | 55,288 psi | 85% | 3268 fps | 99.1% |
| Norma URP | <<locked>> | 90% | 55,912 psi | 86% | 3189 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,174 psi | 88% | 3182 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 58,479 psi | 90% | 3310 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 58,581 psi | 90% | 3248 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,388 psi | 81% | 3166 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 57% | 2060 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,943 psi | 89% | 3169 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,143 psi | 85% | 3222 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,551 psi | 89% | 3232 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,854 psi | 86% | 3258 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,124 psi | 74% | 3182 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 57,392 psi | 88% | 3117 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 58,073 psi | 89% | 3163 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,260 psi | 87% | 3163 fps | 97% |
| Rottweil R 905 | <<locked>> | 96% | 57,261 psi | 88% | 3228 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 57,029 psi | 88% | 3153 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,361 psi | 85% | 3120 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 55,448 psi | 85% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,869 psi | 87% | 3166 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,956 psi | 86% | 3169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,349 psi | 90% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 58,639 psi | 90% | 3127 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,782 psi | 87% | 3225 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 57,812 psi | 89% | 3159 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 58,175 psi | 89% | 3153 fps | 96.6% |
| Somchem S365 | <<locked>> | 92% | 55,796 psi | 86% | 3192 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,725 psi | 89% | 3199 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 57,812 psi | 89% | 3068 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 58,015 psi | 89% | 3084 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,506 psi | 85% | 3077 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 58,044 psi | 89% | 3186 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,305 psi | 88% | 3173 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 56,304 psi | 87% | 3077 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,101 psi | 88% | 3186 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,216 psi | 85% | 3202 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,347 psi | 85% | 3255 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,943 psi | 89% | 3146 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,840 psi | 86% | 3202 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,910 psi | 81% | 3304 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 58,175 psi | 89% | 3196 fps | 98.3% |
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 2700 | <<locked>> | 80% | 52,736 psi | 81% | 3041 fps | 98.1% |
| Accurate 3100 | <<locked>> | 86% | 36,970 psi | 57% | 2779 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 52,721 psi | 81% | 3041 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,712 psi | 63% | 2894 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 96% | 54,375 psi | 84% | 3235 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,153 psi | 76% | 3009 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 44,773 psi | 69% | 2995 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 94% | 49,066 psi | 75% | 3110 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,951 psi | 77% | 3038 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,359 psi | 82% | 3114 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,131 psi | 60% | 2897 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,005 psi | 69% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,556 psi | 69% | 2989 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 45,397 psi | 70% | 3045 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,037 psi | 45% | 2625 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 90% | 35,259 psi | 54% | 2825 fps | 95.7% |
| Alliant Reloder-26 | 78.3 gr | 82% | 33,591 psi | 52% | 2815 fps | 95.7% |
| Bofors RP15 | <<locked>> | 94% | 44,585 psi | 69% | 3025 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 50,720 psi | 78% | 3051 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 45,397 psi | 70% | 3045 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,251 psi | 68% | 2910 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,807 psi | 78% | 3061 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 42,627 psi | 66% | 2943 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,339 psi | 70% | 2966 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 94% | 52,504 psi | 81% | 3120 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,547 psi | 79% | 3100 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,869 psi | 57% | 2785 fps | 98.9% |
| Hodgdon Retumbo | <<locked>> | 98% | 44,759 psi | 69% | 3117 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,626 psi | 64% | 2949 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 42% | 1804 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,721 psi | 80% | 3048 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,969 psi | 83% | 3081 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 39,784 psi | 61% | 2825 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,672 psi | 70% | 2943 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 38,914 psi | 60% | 2838 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 54,737 psi | 84% | 3146 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,633 psi | 78% | 3048 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 50,154 psi | 77% | 3146 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 52,156 psi | 80% | 3045 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,236 psi | 67% | 2887 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 41,394 psi | 64% | 2861 fps | 96.3% |
| Lovex S071 | <<locked>> | 90% | 35,839 psi | 55% | 2749 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 52,692 psi | 81% | 3097 fps | 100% |
| Norma 204 | <<locked>> | 84% | 45,324 psi | 70% | 2982 fps | 95.3% |
| Norma MRP | 79.8 gr | 86% | 38,812 psi | 60% | 2923 fps | 95% |
| Norma URP | <<locked>> | 80% | 40,205 psi | 62% | 2884 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 53,388 psi | 82% | 3120 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 50,430 psi | 78% | 3163 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 39,088 psi | 60% | 2864 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 94% | 41,916 psi | 64% | 2953 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 43% | 1847 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,807 psi | 78% | 3045 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,776 psi | 74% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,567 psi | 62% | 2910 fps | 98.1% |
| ReloadSwiss RS 70 | 75.7 gr | 80% | 39,073 psi | 60% | 2913 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 41,640 psi | 64% | 3028 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 53,940 psi | 83% | 3061 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,674 psi | 73% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 49,472 psi | 76% | 3038 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 43,714 psi | 67% | 2969 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 44,251 psi | 68% | 2910 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,236 psi | 67% | 2887 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 52,156 psi | 80% | 3045 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,394 psi | 64% | 2861 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,907 psi | 75% | 3048 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,370 psi | 74% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,308 psi | 65% | 2825 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,323 psi | 67% | 2963 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 47,863 psi | 74% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,389 psi | 84% | 3091 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 36,825 psi | 57% | 2835 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 41,611 psi | 64% | 2890 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 54,230 psi | 83% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,404 psi | 84% | 3031 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,658 psi | 70% | 2910 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,626 psi | 64% | 2884 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 43,903 psi | 68% | 2927 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 52,649 psi | 81% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,046 psi | 63% | 2881 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 32,256 psi | 50% | 2710 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 94% | 51,706 psi | 80% | 3189 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,756 psi | 63% | 2848 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 42,627 psi | 66% | 2943 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 27,528 psi | 42% | 2657 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,845 psi | 67% | 2933 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 94 powders for .300 PRC loaded with the .308 | 150gr | RWS Kegelspitz. Alliant Reloder-26 delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 2,014 fps to 3,320 fps. ADI AR 2217 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 (448 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Norma MRP, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 PRC with the .308 | 150gr | RWS Kegelspitz they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.