Load Specifications
Load data in caliber 6 x 62 Freres with .243 | 115gr | Barnes RNSP bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 76.
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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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 53,853 psi | 86% | 2802 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 55,405 psi | 89% | 2949 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 86% | 52,576 psi | 84% | 2894 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 86% | 55,027 psi | 88% | 2884 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 88% | 53,229 psi | 85% | 2890 fps | 99.2% |
| ADI AR 2217 | <<locked>> | 98% | 55,738 psi | 89% | 2927 fps | 99.7% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,996 psi | 83% | 2953 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,085 psi | 87% | 2943 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 55,361 psi | 89% | 2884 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,390 psi | 89% | 2881 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 54,752 psi | 88% | 2874 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 53,722 psi | 86% | 2887 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 90% | 55,506 psi | 89% | 2861 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 55,448 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,101 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 53,287 psi | 85% | 2943 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 54,433 psi | 87% | 2858 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 53,243 psi | 85% | 2881 fps | 99.7% |
| Bofors RP30 | <<locked>> | 96% | 55,303 psi | 89% | 2933 fps | 99.7% |
| Bofors RP5 | <<locked>> | 88% | 53,722 psi | 86% | 2887 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 94% | 53,388 psi | 86% | 2890 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 86% | 52,823 psi | 85% | 2831 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 55,230 psi | 89% | 2871 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 55,492 psi | 89% | 2802 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 54,360 psi | 87% | 3005 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,536 psi | 60% | 1847 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,143 psi | 87% | 2812 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 54,505 psi | 87% | 2815 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 53,417 psi | 86% | 2812 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 90% | 55,448 psi | 89% | 2933 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,516 psi | 79% | 2858 fps | 99% |
| Lovex S070 | <<locked>> | 82% | 56,188 psi | 90% | 2841 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 55,390 psi | 89% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,085 psi | 88% | 2864 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 50,415 psi | 81% | 2884 fps | 100% |
| Norma MRP | <<locked>> | 86% | 53,751 psi | 86% | 2907 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,072 psi | 90% | 2858 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 52,547 psi | 84% | 2894 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 82% | 55,027 psi | 88% | 2864 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 55,187 psi | 88% | 2887 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,508 psi | 62% | 1893 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 55,100 psi | 88% | 2992 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 54,636 psi | 88% | 2956 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 86% | 55,912 psi | 90% | 2858 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 86% | 54,404 psi | 87% | 2867 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 82% | 56,188 psi | 90% | 2841 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 54,012 psi | 87% | 2861 fps | 99.8% |
| Somchem S361 | <<locked>> | 84% | 53,809 psi | 86% | 2792 fps | 98.8% |
| Somchem S365 | <<locked>> | 82% | 53,795 psi | 86% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 54,984 psi | 88% | 2841 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 54,839 psi | 88% | 2825 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 86% | 53,882 psi | 86% | 2838 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 53,345 psi | 86% | 2904 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 92% | 54,027 psi | 87% | 2894 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 96% | 55,376 psi | 89% | 2959 fps | 98.6% |
| Vihtavuori N570 | <<locked>> | 98% | 56,391 psi | 90% | 3015 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 54,998 psi | 88% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 54,737 psi | 88% | 2835 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 41,176 psi | 66% | 2589 fps | 99.5% |
| Accurate High Country | <<locked>> | 80% | 44,875 psi | 72% | 2762 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 80% | 42,337 psi | 68% | 2697 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 45,049 psi | 72% | 2713 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 80% | 40,451 psi | 65% | 2648 fps | 96.3% |
| ADI AR 2217 | <<locked>> | 86% | 36,738 psi | 59% | 2562 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 98% | 48,472 psi | 78% | 2881 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 82% | 29,414 psi | 47% | 2408 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,513 psi | 73% | 2713 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,692 psi | 83% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,136 psi | 72% | 2707 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,104 psi | 66% | 2657 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,668 psi | 64% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,330 psi | 55% | 2533 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,773 psi | 72% | 2762 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 49,342 psi | 79% | 2874 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,921 psi | 77% | 2740 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 38,058 psi | 61% | 2589 fps | 96.8% |
| Bofors RP30 | <<locked>> | 84% | 36,608 psi | 59% | 2575 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 41,104 psi | 66% | 2657 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 82% | 34,998 psi | 56% | 2520 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 43,018 psi | 69% | 2654 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,293 psi | 68% | 2638 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,675 psi | 78% | 2703 fps | 100% |
| Hodgdon Retumbo | 47.5 gr | 80% | 33,489 psi | 54% | 2559 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 45% | 1654 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,720 psi | 81% | 2759 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 50,981 psi | 82% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,164 psi | 71% | 2648 fps | 97% |
| IMR 7828 SSC | <<locked>> | 80% | 39,175 psi | 63% | 2628 fps | 96% |
| IMR 8133 Enduron | <<locked>> | 92% | 37,666 psi | 60% | 2621 fps | 95.8% |
| Lovex S070 | <<locked>> | 80% | 52,678 psi | 84% | 2785 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,375 psi | 57% | 2464 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 51,503 psi | 83% | 2808 fps | 99.4% |
| Norma 217 | <<locked>> | 86% | 30,719 psi | 49% | 2461 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 43,395 psi | 70% | 2723 fps | 99.3% |
| Norma URP | <<locked>> | 80% | 52,460 psi | 84% | 2805 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,928 psi | 62% | 2635 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 80% | 51,532 psi | 83% | 2808 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,012 psi | 56% | 2516 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 46% | 1693 fps | 100% |
| ReloadSwiss RS 76 | 50.9 gr | 80% | 32,808 psi | 53% | 2533 fps | 96.9% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 40,219 psi | 64% | 2684 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 46,050 psi | 74% | 2690 fps | 98% |
| Rottweil R 905 | <<locked>> | 80% | 44,556 psi | 71% | 2697 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 80% | 52,678 psi | 84% | 2785 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,208 psi | 71% | 2690 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 46,862 psi | 75% | 2674 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 50,198 psi | 80% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,121 psi | 72% | 2674 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 80% | 39,363 psi | 63% | 2552 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 44,179 psi | 71% | 2680 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,192 psi | 69% | 2717 fps | 96.7% |
| Vihtavuori N565 | <<locked>> | 82% | 38,493 psi | 62% | 2598 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 88% | 41,379 psi | 66% | 2700 fps | 95% |
| Vihtavuori N570 | 57.9 gr | 94% | 48,689 psi | 78% | 2881 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,362 psi | 60% | 2651 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,307 psi | 66% | 2598 fps | 97.8% |
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 58 powders for 6 x 62 Freres loaded with the .243 | 115gr | Barnes RNSP. Vihtavuori N570 delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,847 fps to 3,015 fps. ADI AR 2218 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Hodgdon TrailBoss 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. Hodgdon Retumbo, Vihtavuori N570, ReloadSwiss RS 76 rank at the top here: for 6 x 62 Freres with the .243 | 115gr | Barnes RNSP 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.