Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 69gr | Berger LD 15 Ogive 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>> | 88% | 41,379 psi | 86% | 2966 fps | 99.2% |
| Accurate 2460 | <<locked>> | 86% | 42,163 psi | 88% | 2999 fps | 97.1% |
| Accurate 2495 | <<locked>> | 96% | 42,467 psi | 89% | 3051 fps | 99.6% |
| Accurate 2520 | <<locked>> | 90% | 42,757 psi | 89% | 3048 fps | 96.9% |
| Accurate 4064 | <<locked>> | 98% | 42,003 psi | 88% | 3058 fps | 97.9% |
| Accurate LT-30 | <<locked>> | 82% | 43,279 psi | 90% | 2930 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 41,263 psi | 86% | 3015 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 90% | 40,451 psi | 85% | 3041 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 41,626 psi | 87% | 2995 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 41,800 psi | 87% | 2907 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 86% | 42,917 psi | 90% | 3048 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 84% | 40,930 psi | 86% | 2999 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,909 psi | 69% | 1991 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 41,481 psi | 87% | 3081 fps | 98.9% |
| IMR 4198 | <<locked>> | 84% | 42,975 psi | 90% | 2986 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 40,901 psi | 85% | 3022 fps | 96.3% |
| Norma 202 | <<locked>> | 92% | 42,119 psi | 88% | 3025 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,822 psi | 69% | 2034 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 42,685 psi | 89% | 3015 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 88% | 41,002 psi | 86% | 2966 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 40,901 psi | 85% | 3022 fps | 96.3% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 41,959 psi | 88% | 3015 fps | 97.2% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 42,453 psi | 89% | 3005 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 42,250 psi | 88% | 2936 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 41,060 psi | 86% | 2920 fps | 98.1% |
| Somchem S335 | <<locked>> | 90% | 41,278 psi | 86% | 2933 fps | 97.9% |
| Vihtavuori N130 | <<locked>> | 86% | 42,206 psi | 88% | 2943 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 90% | 41,829 psi | 87% | 2946 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 96% | 42,989 psi | 90% | 3051 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 94% | 42,322 psi | 88% | 3002 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 94% | 41,176 psi | 86% | 2989 fps | 97% |
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% | 32,010 psi | 67% | 2746 fps | 97.1% |
| Accurate 2460 | <<locked>> | 82% | 36,796 psi | 77% | 2877 fps | 95.5% |
| Accurate 2495 | <<locked>> | 82% | 26,165 psi | 55% | 2635 fps | 95% |
| Accurate 2520 | <<locked>> | 86% | 37,202 psi | 78% | 2923 fps | 95.2% |
| Accurate 4064 | <<locked>> | 92% | 34,418 psi | 72% | 2884 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 40,886 psi | 85% | 2877 fps | 98.1% |
| ADI AR 2219 | <<locked>> | 80% | 38,493 psi | 80% | 2949 fps | 97.4% |
| Alliant AR-Comp | 26.2 gr | 80% | 29,356 psi | 61% | 2759 fps | 98.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,564 psi | 76% | 2881 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,218 psi | 82% | 2851 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 35,244 psi | 74% | 2871 fps | 96.4% |
| Hodgdon H335 | <<locked>> | 80% | 35,766 psi | 75% | 2877 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,178 psi | 51% | 1781 fps | 100% |
| IMR 3031 | 26.8 gr | 82% | 29,849 psi | 62% | 2776 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 38,159 psi | 80% | 2881 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 90% | 38,145 psi | 80% | 2959 fps | 95.5% |
| Norma 202 | 28.6 gr | 86% | 34,621 psi | 72% | 2848 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,236 psi | 51% | 1824 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 40,321 psi | 84% | 2963 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 84% | 36,289 psi | 76% | 2854 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 38,145 psi | 80% | 2959 fps | 95.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 39,262 psi | 82% | 2953 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,188 psi | 78% | 2890 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 35,027 psi | 73% | 2769 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 31,807 psi | 66% | 2703 fps | 95.1% |
| Somchem S335 | <<locked>> | 82% | 32,024 psi | 67% | 2710 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 35,085 psi | 73% | 2785 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 80% | 30,545 psi | 64% | 2677 fps | 96.4% |
| Vihtavuori N135 | <<locked>> | 82% | 27,238 psi | 57% | 2657 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 88% | 34,867 psi | 73% | 2831 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 35,998 psi | 75% | 2867 fps | 95.4% |
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 | 69gr | Berger LD 15 Ogive. IMR 3031 delivers the highest muzzle velocity at 3,081 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,081 fps. Hodgdon TrailBoss 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 69–90 %, leaving at least 10 % headroom. The 69.0 gr projectile in 0.243" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. 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 | 69gr | Berger LD 15 Ogive 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.