Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 65gr | CutEdge ESP Raptor bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Alliant AR-Comp and Norma 202.
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 2015 | <<locked>> | 90% | 41,234 psi | 86% | 3054 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 42,163 psi | 88% | 3084 fps | 96.6% |
| Accurate 2495 | <<locked>> | 98% | 41,437 psi | 87% | 3117 fps | 99.2% |
| Accurate 2520 | <<locked>> | 92% | 42,685 psi | 89% | 3130 fps | 96.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,466 psi | 87% | 3133 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 82% | 41,046 psi | 86% | 2966 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 82% | 41,423 psi | 87% | 2972 fps | 95.8% |
| ADI AR 2219 | <<locked>> | 84% | 41,800 psi | 87% | 3110 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 92% | 40,785 psi | 85% | 3140 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 41,713 psi | 87% | 3087 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 42,728 psi | 89% | 3005 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 86% | 40,582 psi | 85% | 3084 fps | 97.4% |
| Hodgdon H335 | <<locked>> | 86% | 41,655 psi | 87% | 3097 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,097 psi | 67% | 2044 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 41,321 psi | 86% | 3163 fps | 98.4% |
| IMR 4198 | <<locked>> | 86% | 43,221 psi | 90% | 3081 fps | 100% |
| Norma 200 | <<locked>> | 82% | 41,495 psi | 87% | 3064 fps | 99.8% |
| Norma 202 | <<locked>> | 94% | 42,308 psi | 88% | 3114 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,256 psi | 67% | 2100 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 43,207 psi | 90% | 3110 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 92% | 42,960 psi | 90% | 3097 fps | 96.8% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 42,308 psi | 88% | 3107 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 42,279 psi | 88% | 3094 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 42,438 psi | 89% | 3022 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 41,133 psi | 86% | 3005 fps | 97.6% |
| Somchem S335 | <<locked>> | 92% | 41,133 psi | 86% | 3015 fps | 97.5% |
| Vihtavuori N130 | <<locked>> | 88% | 42,453 psi | 89% | 3038 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 92% | 41,974 psi | 88% | 3035 fps | 99% |
| Vihtavuori N135 | <<locked>> | 98% | 42,714 psi | 89% | 3136 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 96% | 42,554 psi | 89% | 3087 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 96% | 41,292 psi | 86% | 3071 fps | 96.5% |
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 2015 | <<locked>> | 80% | 29,530 psi | 62% | 2756 fps | 95.5% |
| Accurate 2460 | <<locked>> | 86% | 39,291 psi | 82% | 3022 fps | 95.8% |
| Accurate 2495 | <<locked>> | 88% | 29,167 psi | 61% | 2812 fps | 95.9% |
| Accurate 2520 | <<locked>> | 90% | 39,784 psi | 83% | 3068 fps | 95.4% |
| Accurate 4064 | <<locked>> | 96% | 36,303 psi | 76% | 3015 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 38,769 psi | 81% | 2917 fps | 97.1% |
| Accurate LT-32 | <<locked>> | 80% | 39,117 psi | 82% | 2920 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 36,332 psi | 76% | 2982 fps | 96.1% |
| Alliant AR-Comp | 26.5 gr | 80% | 27,122 psi | 57% | 2769 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,084 psi | 71% | 2907 fps | 98.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,260 psi | 78% | 2887 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 82% | 35,259 psi | 74% | 2953 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 84% | 38,508 psi | 80% | 3028 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,525 psi | 49% | 1834 fps | 100% |
| IMR 3031 | 28.5 gr | 86% | 31,792 psi | 66% | 2913 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 36,085 psi | 75% | 2920 fps | 99.3% |
| Norma 200 | <<locked>> | 80% | 38,682 psi | 81% | 3002 fps | 99.5% |
| Norma 202 | 30.3 gr | 90% | 36,854 psi | 77% | 2986 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,467 psi | 49% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 40,379 psi | 84% | 3045 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 88% | 37,913 psi | 79% | 2979 fps | 95.2% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,985 psi | 77% | 2982 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,809 psi | 73% | 2917 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 37,289 psi | 78% | 2907 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 34,026 psi | 71% | 2838 fps | 95.4% |
| Somchem S335 | <<locked>> | 86% | 33,997 psi | 71% | 2844 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 32,837 psi | 69% | 2812 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 30,530 psi | 64% | 2756 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 86% | 28,558 psi | 60% | 2782 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 90% | 34,969 psi | 73% | 2913 fps | 95% |
| Vihtavuori N540 | <<locked>> | 94% | 38,537 psi | 81% | 3009 fps | 95.7% |
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 31 powders for 6 x 52 R BB2 loaded with the .243 | 65gr | CutEdge ESP Raptor. IMR 3031 delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 2,044 fps to 3,163 fps. Accurate 4064 gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 65.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, Hodgdon TrailBoss, ReloadSwiss RS 14 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. IMR 3031, Alliant AR-Comp, Norma 202 rank at the top here: for 6 x 52 R BB2 with the .243 | 65gr | CutEdge ESP Raptor 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.