Load Specifications
Load data in caliber .300 PRC with .308 | 190gr | Speer Boat Tail Hollow Point bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand 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.
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 3100 | <<locked>> | 94% | 57,580 psi | 89% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,100 psi | 85% | 2848 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 56,246 psi | 87% | 2969 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 55,695 psi | 86% | 2907 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 57,377 psi | 88% | 2972 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2871 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,166 psi | 71% | 2831 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,072 psi | 86% | 2904 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,029 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,419 psi | 85% | 2897 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,450 psi | 88% | 2963 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 58,697 psi | 90% | 2930 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,175 psi | 89% | 2995 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,521 psi | 85% | 2969 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,595 psi | 90% | 2927 fps | 97.1% |
| Bofors RP15 | <<locked>> | 96% | 56,391 psi | 87% | 2946 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,172 psi | 83% | 2943 fps | 99.1% |
| Bofors RP5 | <<locked>> | 94% | 57,450 psi | 88% | 2963 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 56,985 psi | 88% | 2848 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,768 psi | 87% | 2959 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 56,666 psi | 87% | 2904 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,434 psi | 85% | 2858 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 57,232 psi | 88% | 2907 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,927 psi | 86% | 2887 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,144 psi | 86% | 2825 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,159 psi | 88% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,276 psi | 88% | 2940 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 57% | 1801 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,798 psi | 90% | 2887 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,436 psi | 90% | 2871 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,347 psi | 85% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,102 psi | 89% | 2890 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 94% | 55,347 psi | 85% | 2949 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,597 psi | 64% | 2730 fps | 96.3% |
| Lovex S065 | <<locked>> | 84% | 55,724 psi | 86% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,479 psi | 88% | 2864 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,697 psi | 90% | 2887 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,202 psi | 86% | 2890 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 41,843 psi | 64% | 2759 fps | 98.5% |
| Norma MRP | <<locked>> | 92% | 57,363 psi | 88% | 2986 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,043 psi | 88% | 2884 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,014 psi | 86% | 2969 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 55,825 psi | 86% | 2890 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,798 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,145 psi | 59% | 1844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,955 psi | 85% | 2871 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,174 psi | 88% | 2953 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 58,175 psi | 89% | 3071 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,852 psi | 81% | 2956 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 82% | 58,726 psi | 90% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,942 psi | 88% | 2877 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 58,668 psi | 90% | 2940 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 56,985 psi | 88% | 2848 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,724 psi | 86% | 2815 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,479 psi | 88% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,030 psi | 89% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,581 psi | 90% | 2825 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 58,218 psi | 90% | 2940 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 58,102 psi | 89% | 2835 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,407 psi | 90% | 2867 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 57,754 psi | 89% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,376 psi | 85% | 2858 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 55,811 psi | 86% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,201 psi | 85% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 58,552 psi | 90% | 2890 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 57,899 psi | 89% | 2877 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,290 psi | 88% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,072 psi | 88% | 2982 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 57,188 psi | 88% | 2966 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,882 psi | 83% | 2963 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,450 psi | 90% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,666 psi | 87% | 2904 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,101 psi | 88% | 3015 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,187 psi | 85% | 2854 fps | 99.5% |
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 3100 | <<locked>> | 80% | 35,998 psi | 55% | 2490 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 48,051 psi | 74% | 2740 fps | 100% |
| Accurate MAGPRO | 79 gr | 86% | 45,556 psi | 70% | 2776 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 39,900 psi | 61% | 2612 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 40,915 psi | 63% | 2664 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 39,421 psi | 61% | 2628 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 33,315 psi | 51% | 2530 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,948 psi | 71% | 2743 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,214 psi | 82% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,016 psi | 62% | 2608 fps | 96.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,911 psi | 55% | 2549 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,577 psi | 53% | 2513 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,994 psi | 46% | 2421 fps | 96.4% |
| Alliant Reloder-26 | 74.3 gr | 80% | 38,072 psi | 59% | 2657 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,866 psi | 80% | 2812 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 35,766 psi | 55% | 2546 fps | 95.1% |
| Bofors RP30 | <<locked>> | 90% | 38,595 psi | 59% | 2641 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 35,911 psi | 55% | 2549 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 50,299 psi | 77% | 2736 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 37,724 psi | 58% | 2589 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 49,574 psi | 76% | 2789 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 52,054 psi | 80% | 2802 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 43,569 psi | 67% | 2667 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,902 psi | 66% | 2654 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,439 psi | 67% | 2625 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 35,737 psi | 55% | 2625 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 49,327 psi | 76% | 2815 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 43% | 1611 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,672 psi | 70% | 2671 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,706 psi | 80% | 2762 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 45,672 psi | 70% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,438 psi | 65% | 2612 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 39,378 psi | 61% | 2638 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,928 psi | 60% | 2671 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 49,255 psi | 76% | 2713 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,688 psi | 73% | 2707 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 31,111 psi | 48% | 2369 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 45,992 psi | 71% | 2713 fps | 98% |
| Norma 217 | <<locked>> | 94% | 34,200 psi | 53% | 2575 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 37,594 psi | 58% | 2618 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 47,036 psi | 72% | 2723 fps | 100% |
| Ramshot Grand | 75.1 gr | 84% | 39,044 psi | 60% | 2648 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 45,876 psi | 71% | 2723 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 34,882 psi | 54% | 2526 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,500 psi | 44% | 1647 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,950 psi | 74% | 2756 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,108 psi | 71% | 2776 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,561 psi | 50% | 2536 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 45,484 psi | 70% | 2822 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 55,085 psi | 85% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,220 psi | 63% | 2592 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 39,421 psi | 61% | 2595 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 80% | 50,299 psi | 77% | 2736 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,255 psi | 76% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,688 psi | 73% | 2707 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,665 psi | 84% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,283 psi | 74% | 2664 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,088 psi | 60% | 2592 fps | 96.5% |
| Somchem S355 | <<locked>> | 80% | 54,578 psi | 84% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,959 psi | 65% | 2582 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 44,048 psi | 68% | 2677 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,016 psi | 62% | 2579 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 52,402 psi | 81% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,385 psi | 74% | 2717 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,635 psi | 53% | 2451 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 47,718 psi | 73% | 2720 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,885 psi | 60% | 2592 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 43,352 psi | 67% | 2733 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 88% | 40,770 psi | 63% | 2664 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 46,746 psi | 72% | 2831 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,529 psi | 73% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,719 psi | 76% | 2792 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,821 psi | 47% | 2536 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,535 psi | 56% | 2503 fps | 95.5% |
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 78 powders for .300 PRC loaded with the .308 | 190gr | Speer Boat Tail Hollow Point. Hodgdon Retumbo delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,074 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Accurate MAGPRO, Ramshot Grand, Alliant Reloder-26 rank at the top here: for .300 PRC with the .308 | 190gr | Speer Boat Tail Hollow Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.