Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 142gr | Sierra MatchKing bullet and 52 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 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% | 41,582 psi | 88% | 2303 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 41,785 psi | 89% | 2339 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 39,900 psi | 85% | 2375 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 86% | 41,495 psi | 88% | 2313 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,611 psi | 88% | 2431 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 40,799 psi | 87% | 2336 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,321 psi | 88% | 2346 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,553 psi | 86% | 2392 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,393 psi | 86% | 2418 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,360 psi | 73% | 2293 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,134 psi | 89% | 2359 fps | 97.8% |
| Bofors RP3 | <<locked>> | 86% | 40,306 psi | 86% | 2339 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 41,684 psi | 88% | 2346 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 41,800 psi | 89% | 2379 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,800 psi | 89% | 2388 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 75% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 41,916 psi | 89% | 2326 fps | 99% |
| IMR 4064 | <<locked>> | 84% | 40,944 psi | 87% | 2297 fps | 98.1% |
| IMR 4831 | <<locked>> | 96% | 41,104 psi | 87% | 2379 fps | 97.6% |
| IMR 4895 | <<locked>> | 84% | 42,308 psi | 90% | 2375 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 82% | 41,945 psi | 89% | 2343 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 40,799 psi | 87% | 2303 fps | 99.3% |
| Lovex S065 | <<locked>> | 92% | 42,438 psi | 90% | 2336 fps | 96.3% |
| Norma 201 | <<locked>> | 82% | 42,511 psi | 90% | 2320 fps | 99.5% |
| Norma 202 | <<locked>> | 82% | 42,453 psi | 90% | 2323 fps | 100% |
| Norma 203B | <<locked>> | 84% | 40,640 psi | 86% | 2336 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 40,509 psi | 86% | 2379 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 84% | 40,001 psi | 85% | 2346 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 75% | 1532 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,176 psi | 85% | 2385 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,132 psi | 85% | 2421 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,755 psi | 84% | 2392 fps | 96.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,611 psi | 86% | 2405 fps | 96% |
| Rottweil R 902 | <<locked>> | 82% | 40,089 psi | 85% | 2270 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 88% | 40,582 psi | 86% | 2336 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,438 psi | 90% | 2336 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 41,945 psi | 89% | 2343 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 40,799 psi | 87% | 2303 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,611 psi | 88% | 2382 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,495 psi | 88% | 2329 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 40,930 psi | 87% | 2238 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,278 psi | 88% | 2336 fps | 98.9% |
| Somchem S365 | <<locked>> | 98% | 41,031 psi | 87% | 2431 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 42,061 psi | 89% | 2300 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,292 psi | 85% | 2270 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,235 psi | 90% | 2326 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 94% | 42,322 psi | 90% | 2375 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 41,031 psi | 87% | 2300 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 41,771 psi | 89% | 2382 fps | 97.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,680 psi | 78% | 2362 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,219 psi | 85% | 2316 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,002 psi | 87% | 2336 fps | 98.9% |
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 2495 | <<locked>> | 80% | 36,840 psi | 78% | 2224 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,824 psi | 74% | 2215 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 34,882 psi | 74% | 2280 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,418 psi | 73% | 2175 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,434 psi | 77% | 2323 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,750 psi | 72% | 2198 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,463 psi | 77% | 2254 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,794 psi | 72% | 2244 fps | 95% |
| Alliant Reloder-17 | 30.5 gr | 82% | 31,067 psi | 66% | 2208 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,472 psi | 65% | 2198 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,276 psi | 83% | 2310 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 33,170 psi | 70% | 2198 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 36,448 psi | 77% | 2247 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,950 psi | 61% | 2106 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,521 psi | 77% | 2290 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,194 psi | 56% | 1335 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,349 psi | 83% | 2280 fps | 98.5% |
| IMR 4064 | <<locked>> | 80% | 36,085 psi | 77% | 2205 fps | 96.8% |
| IMR 4831 | <<locked>> | 90% | 33,939 psi | 72% | 2241 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,318 psi | 79% | 2280 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,986 psi | 83% | 2290 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 35,984 psi | 76% | 2215 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 39,943 psi | 85% | 2290 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,914 psi | 85% | 2274 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 39,842 psi | 85% | 2280 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,853 psi | 76% | 2244 fps | 97.3% |
| Norma URP | <<locked>> | 90% | 35,723 psi | 76% | 2283 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,056 psi | 74% | 2247 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,179 psi | 56% | 1362 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,608 psi | 80% | 2336 fps | 97.3% |
| ReloadSwiss RS 60 | 29.8 gr | 80% | 31,111 psi | 66% | 2221 fps | 98.4% |
| ReloadSwiss RS 62 | 33.5 gr | 90% | 35,070 psi | 74% | 2297 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,218 psi | 81% | 2356 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 38,014 psi | 81% | 2231 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,299 psi | 66% | 2149 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,943 psi | 85% | 2290 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,986 psi | 83% | 2290 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 35,984 psi | 76% | 2215 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,242 psi | 68% | 2192 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,030 psi | 83% | 2283 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,982 psi | 72% | 2116 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 32,372 psi | 69% | 2159 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 26,339 psi | 56% | 2090 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 36,854 psi | 78% | 2215 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,797 psi | 80% | 2228 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,690 psi | 65% | 2106 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 35,041 psi | 74% | 2238 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 36,274 psi | 77% | 2215 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 90% | 36,535 psi | 78% | 2287 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 32,343 psi | 69% | 2264 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,182 psi | 62% | 2080 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,174 psi | 81% | 2283 fps | 98.4% |
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 52 powders for 6.5 x 52 R K&S loaded with the .264 | 142gr | Sierra MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,431 fps; across all powders the maximum-charge window runs from 1,499 fps to 2,431 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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. ReloadSwiss RS 60, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 6.5 x 52 R K&S with the .264 | 142gr | 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.