Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 150gr | Sierra MatchKing bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 62.
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% | 42,627 psi | 90% | 2241 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,161 psi | 85% | 2238 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,046 psi | 87% | 2323 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 86% | 42,003 psi | 89% | 2251 fps | 98.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,380 psi | 90% | 2372 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,452 psi | 88% | 2270 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,930 psi | 89% | 2283 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,046 psi | 87% | 2329 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,988 psi | 87% | 2356 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,983 psi | 74% | 2241 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,305 psi | 81% | 2362 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 41,046 psi | 87% | 2277 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 86% | 42,467 psi | 90% | 2287 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 40,205 psi | 85% | 2277 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,569 psi | 90% | 2326 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,128 psi | 75% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,351 psi | 90% | 2260 fps | 99.3% |
| IMR 4064 | <<locked>> | 84% | 41,771 psi | 89% | 2238 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 41,901 psi | 89% | 2320 fps | 98.1% |
| IMR 4895 | <<locked>> | 82% | 40,234 psi | 85% | 2264 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 82% | 42,656 psi | 90% | 2277 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,278 psi | 88% | 2238 fps | 99.6% |
| Lovex S065 | <<locked>> | 90% | 40,654 psi | 86% | 2231 fps | 96.3% |
| Norma 203B | <<locked>> | 84% | 41,249 psi | 88% | 2274 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 41,118 psi | 87% | 2316 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 84% | 40,814 psi | 87% | 2290 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,433 psi | 75% | 1476 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,249 psi | 88% | 2329 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,017 psi | 87% | 2362 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,640 psi | 86% | 2336 fps | 97.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,394 psi | 88% | 2352 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 82% | 40,814 psi | 87% | 2208 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 88% | 41,350 psi | 88% | 2277 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,654 psi | 86% | 2231 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,656 psi | 90% | 2277 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 41,278 psi | 88% | 2238 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,525 psi | 90% | 2323 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,453 psi | 90% | 2270 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,727 psi | 89% | 2175 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,989 psi | 89% | 2274 fps | 99.3% |
| Somchem S365 | <<locked>> | 98% | 41,872 psi | 89% | 2369 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 40,132 psi | 85% | 2195 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,756 psi | 86% | 2201 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 40,364 psi | 86% | 2221 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 40,654 psi | 86% | 2274 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 42,047 psi | 89% | 2244 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,511 psi | 90% | 2323 fps | 97.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,478 psi | 80% | 2306 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,944 psi | 87% | 2260 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,227 psi | 66% | 2224 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,684 psi | 88% | 2274 fps | 99.3% |
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 2495 | <<locked>> | 80% | 37,579 psi | 80% | 2162 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,549 psi | 75% | 2156 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 33,330 psi | 71% | 2178 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,983 psi | 74% | 2119 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,970 psi | 78% | 2264 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,418 psi | 73% | 2139 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,202 psi | 79% | 2195 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,287 psi | 73% | 2188 fps | 95.9% |
| Alliant Reloder-17 | 28.9 gr | 80% | 29,660 psi | 63% | 2106 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,370 psi | 62% | 2106 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 35,926 psi | 76% | 2310 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 33,953 psi | 72% | 2146 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 80% | 34,954 psi | 74% | 2146 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,775 psi | 59% | 2014 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,420 psi | 79% | 2234 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 56% | 1289 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,089 psi | 85% | 2221 fps | 99% |
| IMR 4064 | <<locked>> | 80% | 36,695 psi | 78% | 2146 fps | 97.5% |
| IMR 4831 | <<locked>> | 88% | 32,503 psi | 69% | 2142 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 38,058 psi | 81% | 2224 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 39,900 psi | 85% | 2234 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 36,637 psi | 78% | 2156 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 38,174 psi | 81% | 2188 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 36,593 psi | 78% | 2188 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 34,185 psi | 73% | 2182 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,592 psi | 76% | 2188 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,585 psi | 56% | 1322 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,580 psi | 82% | 2280 fps | 97.9% |
| ReloadSwiss RS 60 | 28.9 gr | 80% | 31,560 psi | 67% | 2165 fps | 98.9% |
| ReloadSwiss RS 62 | 31.8 gr | 88% | 33,489 psi | 71% | 2195 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,216 psi | 77% | 2247 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 38,624 psi | 82% | 2172 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,995 psi | 68% | 2100 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,174 psi | 81% | 2188 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,900 psi | 85% | 2234 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,637 psi | 78% | 2156 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,982 psi | 70% | 2139 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,842 psi | 85% | 2228 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,838 psi | 74% | 2064 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 32,996 psi | 70% | 2106 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 25,309 psi | 54% | 1998 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 37,855 psi | 80% | 2159 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,551 psi | 82% | 2165 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,299 psi | 66% | 2054 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 33,489 psi | 71% | 2136 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 37,014 psi | 79% | 2159 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,085 psi | 74% | 2188 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 30,864 psi | 65% | 2165 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,717 psi | 59% | 1982 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,385 psi | 62% | 2169 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,769 psi | 82% | 2224 fps | 98.8% |
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 51 powders for 6.5 x 52 R K&S loaded with the .264 | 150gr | Sierra MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,372 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,372 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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. Alliant Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 62 rank at the top here: for 6.5 x 52 R K&S with the .264 | 150gr | Sierra MatchKing 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.