Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 102gr | Peregrine Glider GRM bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 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>> | 84% | 41,481 psi | 87% | 2434 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 42,351 psi | 88% | 2480 fps | 99.5% |
| Accurate 2495 | <<locked>> | 92% | 42,989 psi | 90% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 42,989 psi | 90% | 2526 fps | 99.4% |
| Accurate 4064 | <<locked>> | 94% | 43,149 psi | 90% | 2549 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 88% | 43,308 psi | 90% | 2530 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 92% | 41,771 psi | 87% | 2480 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,946 psi | 90% | 2497 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 86% | 41,350 psi | 86% | 2500 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,859 psi | 90% | 2543 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 90% | 41,046 psi | 86% | 2507 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 98% | 43,033 psi | 90% | 2618 fps | 97.4% |
| Bofors RP3 | <<locked>> | 94% | 42,496 psi | 89% | 2549 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,888 psi | 90% | 2454 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 40,959 psi | 86% | 2513 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 84% | 42,395 psi | 89% | 2585 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 82% | 43,033 psi | 90% | 2507 fps | 100% |
| Hodgdon H4895 | <<locked>> | 86% | 40,756 psi | 85% | 2490 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,003 psi | 88% | 2559 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,750 psi | 71% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 42,192 psi | 88% | 2497 fps | 97.4% |
| IMR 3031 | <<locked>> | 88% | 41,901 psi | 88% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 41,002 psi | 86% | 2461 fps | 96% |
| IMR 4895 | <<locked>> | 90% | 42,018 psi | 88% | 2539 fps | 97% |
| IMR 8208 XBR | <<locked>> | 86% | 42,946 psi | 90% | 2497 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 82% | 41,930 psi | 88% | 2477 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 88% | 41,278 psi | 86% | 2510 fps | 99.2% |
| Lovex S060 | <<locked>> | 86% | 41,597 psi | 87% | 2428 fps | 96.7% |
| Lovex S062 | <<locked>> | 92% | 42,714 psi | 89% | 2507 fps | 98.3% |
| Norma 201 | <<locked>> | 88% | 42,424 psi | 89% | 2490 fps | 98.2% |
| Norma 202 | <<locked>> | 88% | 42,438 psi | 89% | 2503 fps | 99.7% |
| Norma 203B | <<locked>> | 92% | 43,076 psi | 90% | 2549 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 92% | 42,902 psi | 90% | 2559 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 41,785 psi | 87% | 2510 fps | 96.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 41,452 psi | 87% | 2448 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,939 psi | 71% | 1631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 42,569 psi | 89% | 2487 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 42,467 psi | 89% | 2598 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 43,134 psi | 90% | 2635 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 40,683 psi | 85% | 2441 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 90% | 42,772 psi | 89% | 2487 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 96% | 41,930 psi | 88% | 2530 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 41,278 psi | 86% | 2510 fps | 99.2% |
| Shooters World Precision | <<locked>> | 92% | 42,714 psi | 89% | 2507 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 41,785 psi | 87% | 2546 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 41,669 psi | 87% | 2497 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,090 psi | 88% | 2418 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 41,147 psi | 86% | 2411 fps | 99.9% |
| Somchem S321 | <<locked>> | 84% | 43,250 psi | 90% | 2523 fps | 98.5% |
| Somchem S335 | <<locked>> | 86% | 41,089 psi | 86% | 2415 fps | 99.8% |
| Somchem S341 | <<locked>> | 86% | 40,306 psi | 84% | 2461 fps | 96.2% |
| Somchem S355 | <<locked>> | 96% | 43,221 psi | 90% | 2539 fps | 97.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,925 psi | 73% | 2457 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 42,221 psi | 88% | 2408 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,047 psi | 88% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 41,336 psi | 86% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 42,699 psi | 89% | 2484 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 96% | 41,524 psi | 87% | 2484 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 86% | 43,062 psi | 90% | 2493 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 90% | 41,321 psi | 86% | 2480 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 40,857 psi | 85% | 2467 fps | 96.8% |
| Winchester 748 | <<locked>> | 86% | 41,698 psi | 87% | 2533 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 40,915 psi | 85% | 2503 fps | 97.2% |
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% | 36,550 psi | 76% | 2346 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 39,102 psi | 82% | 2421 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 28,543 psi | 60% | 2238 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 34,505 psi | 72% | 2369 fps | 97.9% |
| Accurate 4064 | <<locked>> | 80% | 27,050 psi | 57% | 2215 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 82% | 35,882 psi | 75% | 2382 fps | 95% |
| ADI AR 2208 | <<locked>> | 90% | 39,117 psi | 82% | 2428 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,549 psi | 74% | 2352 fps | 96.3% |
| Alliant AR-Comp | <<locked>> | 80% | 33,634 psi | 70% | 2362 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 32,924 psi | 69% | 2346 fps | 95.1% |
| Alliant Reloder-15 | <<locked>> | 88% | 38,392 psi | 80% | 2457 fps | 95.2% |
| Alliant Reloder-17 | 28.7 gr | 94% | 37,753 psi | 79% | 2510 fps | 95.7% |
| Bofors RP3 | <<locked>> | 86% | 32,111 psi | 67% | 2339 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,637 psi | 79% | 2356 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,040 psi | 69% | 2352 fps | 96.3% |
| Hodgdon CFE223 | <<locked>> | 82% | 39,247 psi | 82% | 2523 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 40,611 psi | 85% | 2467 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 82% | 36,056 psi | 75% | 2395 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 34,113 psi | 71% | 2395 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,758 psi | 52% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,867 psi | 73% | 2352 fps | 95.2% |
| IMR 3031 | 22.5 gr | 80% | 32,198 psi | 67% | 2352 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 38,769 psi | 81% | 2418 fps | 95.3% |
| IMR 4895 | <<locked>> | 86% | 36,695 psi | 77% | 2434 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 35,549 psi | 74% | 2352 fps | 96.3% |
| Lovex D073.5 | <<locked>> | 80% | 39,189 psi | 82% | 2428 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 31,169 psi | 65% | 2306 fps | 96.9% |
| Lovex S060 | <<locked>> | 82% | 36,927 psi | 77% | 2336 fps | 95.3% |
| Lovex S062 | <<locked>> | 84% | 33,373 psi | 70% | 2323 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 32,779 psi | 68% | 2293 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 32,634 psi | 68% | 2310 fps | 98% |
| Norma 203B | <<locked>> | 88% | 37,652 psi | 79% | 2444 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 88% | 37,623 psi | 79% | 2457 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 36,651 psi | 77% | 2408 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,856 psi | 81% | 2398 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,019 psi | 52% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,784 psi | 83% | 2438 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 39,711 psi | 83% | 2543 fps | 95.6% |
| ReloadSwiss RS 60 | 26.3 gr | 86% | 31,140 psi | 65% | 2359 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 35,984 psi | 75% | 2349 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 33,011 psi | 69% | 2293 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 90% | 34,360 psi | 72% | 2382 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,169 psi | 65% | 2306 fps | 96.9% |
| Shooters World Precision | <<locked>> | 84% | 33,373 psi | 70% | 2323 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 38,725 psi | 81% | 2487 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 36,521 psi | 76% | 2395 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,606 psi | 72% | 2277 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,021 psi | 59% | 2146 fps | 97.4% |
| Somchem S321 | <<locked>> | 80% | 37,913 psi | 79% | 2425 fps | 97.4% |
| Somchem S335 | <<locked>> | 80% | 34,084 psi | 71% | 2283 fps | 98.9% |
| Somchem S341 | <<locked>> | 84% | 37,710 psi | 79% | 2411 fps | 95.4% |
| Somchem S355 | <<locked>> | 90% | 35,679 psi | 75% | 2395 fps | 95.6% |
| Somchem S365 | <<locked>> | 98% | 33,054 psi | 69% | 2411 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 39,465 psi | 82% | 2359 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,621 psi | 72% | 2283 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 29,544 psi | 62% | 2247 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 80% | 30,719 psi | 64% | 2251 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 86% | 30,081 psi | 63% | 2247 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 35,085 psi | 73% | 2339 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 80% | 29,573 psi | 62% | 2234 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 38,319 psi | 80% | 2418 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 34,011 psi | 71% | 2379 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,781 psi | 75% | 2402 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 63 powders for 6 x 52 R BB2 loaded with the .243 | 102gr | Peregrine Glider GRM. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,635 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,635 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 102.0 gr projectile in 0.243" calls for a 1:6.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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. ReloadSwiss RS 60, Alliant Reloder-17, IMR 3031 rank at the top here: for 6 x 52 R BB2 with the .243 | 102gr | Peregrine Glider GRM 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.