Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 60gr | CutEdge ER Raptor bullet and 17 powders. The key underlying parameters are shown in the table above.
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 1680 | <<locked>> | 84% | 40,364 psi | 84% | 2953 fps | 97.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 40,901 psi | 85% | 3054 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 90% | 41,989 psi | 88% | 3091 fps | 99.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,130 psi | 80% | 3077 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 96% | 42,047 psi | 88% | 3110 fps | 98% |
| Alliant Reloder-7 | <<locked>> | 88% | 41,481 psi | 87% | 3031 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,921 psi | 63% | 1985 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 42,424 psi | 89% | 3068 fps | 98.7% |
| IMR 4227 | <<locked>> | 84% | 43,105 psi | 90% | 3022 fps | 99.6% |
| Lovex S053 | <<locked>> | 84% | 41,901 psi | 88% | 2989 fps | 100% |
| Norma 200 | <<locked>> | 92% | 41,684 psi | 87% | 3091 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,544 psi | 62% | 2031 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 42,134 psi | 88% | 3041 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 43,178 psi | 90% | 2861 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 42,221 psi | 88% | 3048 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 40,973 psi | 86% | 3012 fps | 97.4% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,914 psi | 83% | 2986 fps | 96% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 35,027 psi | 73% | 2828 fps | 95.9% |
| Accurate 2015 | <<locked>> | 98% | 38,450 psi | 80% | 3002 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 80% | 30,240 psi | 63% | 2812 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 94% | 31,444 psi | 66% | 2894 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 88% | 32,430 psi | 68% | 2881 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 31,865 psi | 67% | 2799 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,017 psi | 46% | 1785 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 31,502 psi | 66% | 2795 fps | 95.6% |
| IMR 4227 | <<locked>> | 80% | 38,116 psi | 80% | 2917 fps | 98.9% |
| Lovex S053 | <<locked>> | 80% | 37,101 psi | 78% | 2887 fps | 100% |
| Norma 200 | <<locked>> | 82% | 29,950 psi | 63% | 2799 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,480 psi | 45% | 1821 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 37,347 psi | 78% | 2936 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 34,664 psi | 72% | 2700 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 30,530 psi | 64% | 2785 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 90% | 33,779 psi | 71% | 2844 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 98% | 37,637 psi | 79% | 2936 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 40 powders for 6 x 52 R Bretschneider loaded with the .243 | 60gr | CutEdge ER Raptor. Hodgdon H335 delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,985 fps to 3,114 fps. Accurate 2015 gives the best case fill at 100 %, and 40 of the 40 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 60.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. As outliers, Accurate 2460, Accurate 2495, Accurate 2520 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.