Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 65gr | Impala LWHV LS bullet and 29 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Vihtavuori N135 and Alliant AR-Comp.
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% | 41,553 psi | 87% | 3009 fps | 98.7% |
| Accurate 2460 | <<locked>> | 86% | 42,627 psi | 89% | 3041 fps | 96.2% |
| Accurate 2495 | <<locked>> | 96% | 43,076 psi | 90% | 3104 fps | 99.2% |
| Accurate 4064 | <<locked>> | 98% | 42,438 psi | 89% | 3107 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 43,091 psi | 90% | 2963 fps | 97.8% |
| ADI AR 2219 | <<locked>> | 82% | 41,278 psi | 86% | 3051 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 92% | 43,004 psi | 90% | 3140 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 41,814 psi | 87% | 3041 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 41,524 psi | 87% | 2940 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 86% | 42,844 psi | 90% | 3087 fps | 97.5% |
| Hodgdon H335 | <<locked>> | 84% | 40,785 psi | 85% | 3035 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,228 psi | 69% | 2028 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 40,770 psi | 85% | 3104 fps | 97.9% |
| IMR 4198 | <<locked>> | 84% | 42,496 psi | 89% | 3022 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 94% | 43,120 psi | 90% | 3104 fps | 95.8% |
| Norma 202 | <<locked>> | 92% | 42,032 psi | 88% | 3061 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,272 psi | 70% | 2073 fps | 100% |
| Rottweil R 901 | <<locked>> | 88% | 41,814 psi | 87% | 3015 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 94% | 43,120 psi | 90% | 3104 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 41,727 psi | 87% | 3048 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 41,669 psi | 87% | 3031 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 42,177 psi | 88% | 2969 fps | 96.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 40,524 psi | 85% | 2946 fps | 97% |
| Somchem S335 | <<locked>> | 90% | 41,481 psi | 87% | 2972 fps | 97.1% |
| Vihtavuori N130 | <<locked>> | 86% | 42,366 psi | 89% | 2989 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 90% | 41,466 psi | 87% | 2979 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 96% | 42,279 psi | 88% | 3084 fps | 99% |
| Vihtavuori N140 | <<locked>> | 94% | 42,163 psi | 88% | 3038 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 96% | 43,192 psi | 90% | 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% | 32,837 psi | 69% | 2795 fps | 96.3% |
| Accurate 2460 | <<locked>> | 84% | 39,943 psi | 83% | 2982 fps | 95.4% |
| Accurate 2495 | <<locked>> | 84% | 29,530 psi | 62% | 2766 fps | 95.5% |
| Accurate 4064 | <<locked>> | 94% | 37,536 psi | 78% | 2992 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 40,712 psi | 85% | 2910 fps | 97.2% |
| ADI AR 2219 | <<locked>> | 80% | 38,551 psi | 81% | 2989 fps | 96.4% |
| Alliant AR-Comp | 25.3 gr | 80% | 29,936 psi | 63% | 2805 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,927 psi | 77% | 2927 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,044 psi | 82% | 2884 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 35,418 psi | 74% | 2907 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 82% | 38,232 psi | 80% | 2972 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,743 psi | 52% | 1818 fps | 100% |
| IMR 3031 | 27.1 gr | 86% | 34,113 psi | 71% | 2930 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 37,782 psi | 79% | 2913 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 92% | 40,756 psi | 85% | 3054 fps | 95.1% |
| Norma 202 | <<locked>> | 90% | 39,320 psi | 82% | 2999 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,903 psi | 52% | 1864 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 39,639 psi | 83% | 2963 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 40,756 psi | 85% | 3054 fps | 95.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 39,117 psi | 82% | 2989 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,072 psi | 77% | 2923 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 39,827 psi | 83% | 2917 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 36,245 psi | 76% | 2848 fps | 95.7% |
| Somchem S335 | <<locked>> | 86% | 36,941 psi | 77% | 2867 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 35,476 psi | 74% | 2831 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 30,937 psi | 65% | 2717 fps | 95.4% |
| Vihtavuori N135 | 25.9 gr | 84% | 29,617 psi | 62% | 2759 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 90% | 37,347 psi | 78% | 2927 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 92% | 38,392 psi | 80% | 2963 fps | 95% |
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 29 powders for 6 x 52 R BB2 loaded with the .243 | 65gr | Impala LWHV LS. Alliant AR-Comp delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 2,028 fps to 3,140 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 29 of the 29 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 65.0 gr projectile in 0.243" calls for a 1:8.5 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, Vihtavuori N135, Alliant AR-Comp rank at the top here: for 6 x 52 R BB2 with the .243 | 65gr | Impala LWHV LS 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.