Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | Barnes Match Burner BT bullet and 52 powders. The key underlying parameters are shown in the table above.
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 2495 | <<locked>> | 84% | 41,466 psi | 88% | 2320 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 41,655 psi | 88% | 2356 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,453 psi | 90% | 2438 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 86% | 41,423 psi | 88% | 2329 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,481 psi | 88% | 2444 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 40,712 psi | 86% | 2349 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,857 psi | 87% | 2356 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,583 psi | 90% | 2444 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 39,842 psi | 85% | 2425 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,171 psi | 72% | 2303 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,003 psi | 89% | 2375 fps | 97.6% |
| Bofors RP3 | <<locked>> | 86% | 40,132 psi | 85% | 2352 fps | 99% |
| Hodgdon H380 | <<locked>> | 86% | 41,220 psi | 87% | 2356 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 41,669 psi | 88% | 2392 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,640 psi | 88% | 2402 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 74% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 41,437 psi | 88% | 2336 fps | 98.8% |
| IMR 3031 | <<locked>> | 82% | 42,308 psi | 90% | 2375 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 40,857 psi | 87% | 2313 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 40,944 psi | 87% | 2395 fps | 97.4% |
| IMR 4895 | <<locked>> | 84% | 41,858 psi | 89% | 2382 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 82% | 41,452 psi | 88% | 2352 fps | 99.9% |
| Lovex S062 | <<locked>> | 84% | 40,364 psi | 86% | 2313 fps | 99.2% |
| Lovex S065 | <<locked>> | 92% | 42,308 psi | 90% | 2349 fps | 96.1% |
| Norma 201 | <<locked>> | 82% | 42,076 psi | 89% | 2329 fps | 99.4% |
| Norma 202 | <<locked>> | 82% | 42,380 psi | 90% | 2339 fps | 100% |
| Norma 203B | <<locked>> | 84% | 40,176 psi | 85% | 2346 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 42,569 psi | 90% | 2431 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 84% | 39,856 psi | 85% | 2362 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,215 psi | 75% | 1542 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,045 psi | 85% | 2398 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 42,496 psi | 90% | 2484 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,453 psi | 90% | 2461 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 84% | 42,627 psi | 90% | 2333 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 88% | 40,030 psi | 85% | 2343 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,308 psi | 90% | 2349 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 41,452 psi | 88% | 2352 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 40,364 psi | 86% | 2313 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,481 psi | 88% | 2398 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,423 psi | 88% | 2343 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 40,843 psi | 87% | 2254 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,147 psi | 87% | 2352 fps | 98.8% |
| Somchem S365 | <<locked>> | 98% | 40,466 psi | 86% | 2438 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 84% | 41,597 psi | 88% | 2313 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,438 psi | 90% | 2323 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,756 psi | 89% | 2336 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 94% | 42,134 psi | 89% | 2388 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 84% | 40,930 psi | 87% | 2316 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 41,176 psi | 87% | 2392 fps | 96.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,085 psi | 77% | 2365 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,001 psi | 85% | 2329 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 40,509 psi | 86% | 2346 fps | 98.7% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 36,405 psi | 77% | 2234 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,447 psi | 73% | 2224 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 34,679 psi | 74% | 2290 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 34,389 psi | 73% | 2192 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,361 psi | 77% | 2336 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,692 psi | 71% | 2211 fps | 97.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,071 psi | 77% | 2260 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,505 psi | 75% | 2300 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,980 psi | 66% | 2221 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,342 psi | 64% | 2208 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,175 psi | 83% | 2323 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 32,793 psi | 70% | 2208 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 82% | 36,361 psi | 77% | 2260 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,458 psi | 65% | 2159 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,434 psi | 77% | 2303 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 55% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,943 psi | 83% | 2290 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 39,929 psi | 85% | 2336 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,027 psi | 76% | 2221 fps | 96.7% |
| IMR 4831 | <<locked>> | 90% | 33,808 psi | 72% | 2254 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 36,927 psi | 78% | 2290 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 80% | 38,885 psi | 82% | 2306 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 35,621 psi | 76% | 2221 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 39,842 psi | 85% | 2303 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 39,508 psi | 84% | 2283 fps | 99% |
| Norma 202 | <<locked>> | 80% | 39,755 psi | 84% | 2297 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,462 psi | 75% | 2251 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 35,259 psi | 75% | 2290 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 34,925 psi | 74% | 2260 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 56% | 1378 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,188 psi | 79% | 2343 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 30,792 psi | 65% | 2228 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,173 psi | 79% | 2359 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 37,652 psi | 80% | 2241 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 30,922 psi | 66% | 2159 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,842 psi | 85% | 2303 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,885 psi | 82% | 2306 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 35,621 psi | 76% | 2221 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,879 psi | 68% | 2198 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,624 psi | 82% | 2293 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,011 psi | 72% | 2133 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 32,024 psi | 68% | 2169 fps | 96.4% |
| Somchem S365 | <<locked>> | 84% | 26,237 psi | 56% | 2103 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 36,811 psi | 78% | 2234 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,405 psi | 79% | 2238 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,342 psi | 64% | 2113 fps | 97.3% |
| Vihtavuori N160 | <<locked>> | 88% | 34,925 psi | 74% | 2251 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 35,882 psi | 76% | 2224 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 36,376 psi | 77% | 2297 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 31,850 psi | 68% | 2270 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,864 psi | 65% | 2136 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,101 psi | 81% | 2300 fps | 98.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 77 powders for 6.5 x 52 R K&S loaded with the .264 | 140gr | Barnes Match Burner BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,484 fps; across all powders the maximum-charge window runs from 1,506 fps to 2,484 fps. Accurate 3100 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-23 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. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.