Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 62gr | Barnes Varmint Grenade FB bullet and 27 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 Hodgdon H322.
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>> | 92% | 41,945 psi | 88% | 3107 fps | 98.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,453 psi | 89% | 3182 fps | 98.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,450 psi | 82% | 3130 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 84% | 42,496 psi | 89% | 3035 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 82% | 42,105 psi | 88% | 3110 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 42,801 psi | 89% | 3173 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 94% | 41,321 psi | 86% | 3196 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 88% | 42,699 psi | 89% | 3153 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 40,785 psi | 85% | 3002 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 88% | 41,553 psi | 87% | 3146 fps | 96.9% |
| Hodgdon H335 | <<locked>> | 88% | 42,322 psi | 88% | 3153 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,155 psi | 67% | 2077 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 41,930 psi | 88% | 3219 fps | 97.9% |
| IMR 4198 | <<locked>> | 86% | 41,481 psi | 87% | 3087 fps | 99.6% |
| Norma 200 | <<locked>> | 84% | 42,627 psi | 89% | 3130 fps | 99.7% |
| Norma 202 | <<locked>> | 96% | 43,047 psi | 90% | 3169 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,966 psi | 67% | 2123 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 43,149 psi | 90% | 3153 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 43,279 psi | 90% | 3077 fps | 96.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,930 psi | 88% | 3058 fps | 97% |
| Somchem S335 | <<locked>> | 94% | 41,930 psi | 88% | 3068 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 82% | 42,235 psi | 88% | 3064 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 40,625 psi | 85% | 3041 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 94% | 42,627 psi | 89% | 3087 fps | 98.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,308 psi | 90% | 3192 fps | 99% |
| Vihtavuori N140 | <<locked>> | 96% | 40,466 psi | 85% | 3081 fps | 96% |
| Vihtavuori N540 | <<locked>> | 98% | 42,105 psi | 88% | 3127 fps | 95.9% |
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>> | 82% | 30,632 psi | 64% | 2828 fps | 95.1% |
| Accurate 2495 | <<locked>> | 90% | 29,849 psi | 62% | 2874 fps | 95.3% |
| Accurate 4064 | <<locked>> | 98% | 36,695 psi | 77% | 3064 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 37,434 psi | 78% | 2920 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 80% | 39,160 psi | 82% | 3048 fps | 100% |
| ADI AR 2219 | <<locked>> | 82% | 37,246 psi | 78% | 3041 fps | 95.6% |
| Alliant AR-Comp | 25.7 gr | 80% | 26,266 psi | 55% | 2766 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,112 psi | 69% | 2920 fps | 97.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,853 psi | 75% | 2887 fps | 95.8% |
| Hodgdon H322 | 27.9 gr | 84% | 36,506 psi | 76% | 3022 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 86% | 39,537 psi | 83% | 3087 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,786 psi | 50% | 1867 fps | 100% |
| IMR 3031 | 28.9 gr | 90% | 34,635 psi | 72% | 3031 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 34,606 psi | 72% | 2923 fps | 98.5% |
| Norma 200 | <<locked>> | 80% | 37,492 psi | 78% | 3015 fps | 99% |
| Norma 202 | <<locked>> | 94% | 40,176 psi | 84% | 3104 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,395 psi | 49% | 1900 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,373 psi | 70% | 2917 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 40,741 psi | 85% | 3022 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 37,231 psi | 78% | 2953 fps | 95.6% |
| Somchem S335 | <<locked>> | 90% | 37,014 psi | 77% | 2956 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 39,305 psi | 82% | 3005 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,676 psi | 66% | 2818 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 84% | 31,328 psi | 65% | 2812 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 90% | 31,517 psi | 66% | 2907 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 94% | 38,174 psi | 80% | 3028 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 96% | 39,392 psi | 82% | 3064 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 27 powders for 6 x 52 R BB2 loaded with the .243 | 62gr | Barnes Varmint Grenade FB. IMR 3031 delivers the highest muzzle velocity at 3,219 fps; across all powders the maximum-charge window runs from 2,077 fps to 3,219 fps. Accurate 2495 gives the best case fill at 100 %, and 27 of the 27 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 62.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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. IMR 3031, Alliant AR-Comp, Hodgdon H322 rank at the top here: for 6 x 52 R BB2 with the .243 | 62gr | Barnes Varmint Grenade FB 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.