Load Specifications
Load data in caliber .260 Picra with .264 | 140gr | Winchester Powerpoint bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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 ≥ 60% and propellant combustion ≥ 80%. 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: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS² | <<locked>> | 64% | 48,573 psi | 86% | 1394 fps | 96.6% |
| Accurate Solo 1000² | <<locked>> | 64% | 48,878 psi | 86% | 1198 fps | 100% |
| ADI AP 100² | <<locked>> | 64% | 47,587 psi | 84% | 1289 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 48,791 psi | 86% | 1168 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 49,501 psi | 88% | 1181 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 50,111 psi | 89% | 1201 fps | 100% |
| Alliant Green Dot² | <<locked>> | 64% | 49,922 psi | 88% | 1214 fps | 100% |
| Alliant Herco² | <<locked>> | 68% | 47,732 psi | 84% | 1234 fps | 100% |
| Alliant RED DOT² | <<locked>> | 68% | 49,821 psi | 88% | 1204 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 76% | 48,820 psi | 86% | 1184 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 49,197 psi | 87% | 1175 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,737 psi | 61% | 1014 fps | 100% |
| IMR 4227*² | <<locked>> | 72% | 48,414 psi | 86% | 1398 fps | 94.9% |
| Maxam CSB 1² | <<locked>> | 64% | 48,414 psi | 86% | 1204 fps | 100% |
| Maxam CSB 3² | <<locked>> | 64% | 50,067 psi | 89% | 1214 fps | 100% |
| Maxam CSB 4² | <<locked>> | 64% | 50,096 psi | 89% | 1211 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 50,009 psi | 88% | 1194 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,983 psi | 62% | 1033 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 72% | 49,110 psi | 87% | 1398 fps | 99.7% |
| SNPE Vectan BA10² | <<locked>> | 68% | 50,560 psi | 89% | 1191 fps | 100% |
| SNPE Vectan BA6 1/2² | <<locked>> | 76% | 48,733 psi | 86% | 1358 fps | 100% |
| Somchem S265² | <<locked>> | 68% | 46,485 psi | 82% | 1362 fps | 97.8% |
| Vihtavuori N110² | <<locked>> | 68% | 48,588 psi | 86% | 1371 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 92% | 48,675 psi | 86% | 1152 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS*² | <<locked>> | 60% | 42,337 psi | 75% | 1312 fps | 94.5% |
| Accurate Solo 1000² | <<locked>> | 60% | 45,034 psi | 80% | 1158 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 42,960 psi | 76% | 1240 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 38,827 psi | 69% | 1056 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 39,015 psi | 69% | 1070 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 42,467 psi | 75% | 1119 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 45,513 psi | 80% | 1168 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 39,624 psi | 70% | 1148 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 42,047 psi | 74% | 1119 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 34,301 psi | 61% | 1027 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 33,852 psi | 60% | 1004 fps | 100% |
| Hodgdon TrailBoss² | 6.8 gr | 60% | 17,811 psi | 31% | 764 fps | 100% |
| IMR 4227*² | <<locked>> | 60% | 32,982 psi | 58% | 1178 fps | 87.6% |
| Maxam CSB 1² | <<locked>> | 60% | 44,135 psi | 78% | 1161 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 45,687 psi | 81% | 1171 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 46,209 psi | 82% | 1168 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 45,585 psi | 81% | 1145 fps | 100% |
| ReloadSwiss RS 14² | 7 gr | 60% | 18,144 psi | 32% | 784 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 60% | 33,939 psi | 60% | 1194 fps | 95.6% |
| SNPE Vectan BA10² | <<locked>> | 60% | 42,888 psi | 76% | 1112 fps | 100% |
| SNPE Vectan BA6 1/2² | <<locked>> | 60% | 31,111 psi | 55% | 1132 fps | 99% |
| Somchem S265*² | <<locked>> | 60% | 36,347 psi | 64% | 1224 fps | 94.5% |
| Vihtavuori N110² | <<locked>> | 60% | 38,014 psi | 67% | 1240 fps | 99.3% |
| Vihtavuori N32C Tin Star² | 9.3 gr | 60% | 27,485 psi | 49% | 909 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 24 powders for .260 Picra loaded with the .264 | 140gr | Winchester Powerpoint. IMR 4227 delivers the highest muzzle velocity at 1,398 fps; across all powders the maximum-charge window runs from 1,014 fps to 1,398 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 4 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 61–89 %, leaving at least 11 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. 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. Vihtavuori N32C Tin Star, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .260 Picra with the .264 | 140gr | Winchester Powerpoint they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 4227 burn incompletely and react more sensitively to barrel length and temperature. ADI APS 350, ADI APS 450, ADI AS 30 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.