Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 69gr | Berger LD 15 Ogive bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, Hodgdon H322 and IMR 3031.
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>> | 94% | 41,017 psi | 86% | 2890 fps | 98.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,927 psi | 79% | 2897 fps | 98% |
| Accurate LT-30 | <<locked>> | 86% | 42,351 psi | 88% | 2825 fps | 97.1% |
| ADI AR 2207 | <<locked>> | 84% | 41,698 psi | 87% | 2894 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 42,322 psi | 88% | 2953 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 98% | 42,989 psi | 90% | 3022 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 41,901 psi | 88% | 2930 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 84% | 42,946 psi | 90% | 2887 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 40,669 psi | 85% | 2802 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 90% | 40,886 psi | 85% | 2923 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 82% | 41,321 psi | 86% | 2818 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,517 psi | 66% | 1886 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 40,959 psi | 86% | 2989 fps | 97.5% |
| IMR 4198 | <<locked>> | 88% | 41,394 psi | 86% | 2877 fps | 99.6% |
| Norma 200 | <<locked>> | 86% | 42,090 psi | 88% | 2917 fps | 99.6% |
| Norma 202 | <<locked>> | 98% | 41,901 psi | 88% | 2943 fps | 95.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,401 psi | 66% | 1932 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 42,395 psi | 89% | 2657 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 42,772 psi | 89% | 2953 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 42,482 psi | 89% | 2930 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 42,931 psi | 90% | 2864 fps | 95.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,972 psi | 81% | 2795 fps | 96% |
| Somchem S335 | <<locked>> | 96% | 41,423 psi | 87% | 2858 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 84% | 41,843 psi | 87% | 2851 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 42,888 psi | 90% | 2884 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 96% | 42,090 psi | 88% | 2874 fps | 98.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,639 psi | 83% | 2917 fps | 98.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,351 psi | 88% | 2920 fps | 96.3% |
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>> | 86% | 31,807 psi | 66% | 2674 fps | 95.6% |
| Accurate 2495 | <<locked>> | 94% | 30,719 psi | 64% | 2723 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 82% | 37,463 psi | 78% | 2717 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 36,608 psi | 76% | 2792 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 36,927 psi | 77% | 2831 fps | 95.3% |
| Alliant AR-Comp | 22.7 gr | 82% | 26,005 psi | 54% | 2572 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,603 psi | 64% | 2661 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,927 psi | 79% | 2782 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 35,462 psi | 74% | 2687 fps | 95.5% |
| Hodgdon H322 | 24.6 gr | 86% | 36,085 psi | 75% | 2812 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 38,624 psi | 81% | 2759 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,250 psi | 49% | 1690 fps | 100% |
| IMR 3031 | 25.4 gr | 92% | 33,794 psi | 71% | 2815 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 32,532 psi | 68% | 2667 fps | 97.9% |
| Norma 200 | <<locked>> | 80% | 34,664 psi | 72% | 2753 fps | 98.4% |
| Norma 202 | <<locked>> | 96% | 39,088 psi | 82% | 2884 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,293 psi | 49% | 1736 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,987 psi | 84% | 2615 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 40,016 psi | 84% | 2897 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 33,286 psi | 70% | 2717 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 40,045 psi | 84% | 2805 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 36,419 psi | 76% | 2736 fps | 95.1% |
| Somchem S335 | <<locked>> | 92% | 36,361 psi | 76% | 2746 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 36,796 psi | 77% | 2753 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,443 psi | 62% | 2569 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 86% | 31,053 psi | 65% | 2618 fps | 95% |
| Vihtavuori N135 | <<locked>> | 92% | 30,676 psi | 64% | 2697 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 98% | 39,566 psi | 83% | 2861 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 28 powders for 6 x 52 R Bretschneider loaded with the .243 | 69gr | Berger LD 15 Ogive. Alliant AR-Comp delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,022 fps. Accurate 2495 gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 66–90 %, 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. Accurate 2495, 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. Alliant AR-Comp, Hodgdon H322, IMR 3031 rank at the top here: for 6 x 52 R Bretschneider 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.