Load Specifications
Load data in caliber 7 x 50 R with .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC bullet and 34 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, ADI AR 2219 and Norma 200.
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 1680 | <<locked>> | 88% | 46,731 psi | 88% | 2224 fps | 99.7% |
| Accurate 2015ᴾ | <<locked>> | 100% | 41,771 psi | 79% | 2238 fps | 98.7% |
| Accurate 2460ᴾ | <<locked>> | 100% | 45,818 psi | 87% | 2313 fps | 96.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 29,762 psi | 56% | 2110 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 94% | 47,558 psi | 90% | 2228 fps | 98.3% |
| Accurate LT-32 | <<locked>> | 92% | 45,310 psi | 86% | 2188 fps | 96% |
| ADI AR 2207 | <<locked>> | 92% | 45,643 psi | 86% | 2270 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 47,355 psi | 89% | 2343 fps | 98.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,435 psi | 73% | 2254 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 45,730 psi | 86% | 2306 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 90% | 45,150 psi | 85% | 2238 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 45,353 psi | 86% | 2224 fps | 98.2% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 43,874 psi | 83% | 2293 fps | 97.6% |
| Hodgdon H335 | <<locked>> | 96% | 46,209 psi | 87% | 2333 fps | 97% |
| Hodgdon H4198 | <<locked>> | 92% | 46,006 psi | 87% | 2215 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,893 psi | 58% | 1358 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 45,832 psi | 87% | 2257 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 47,079 psi | 89% | 2208 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 44,295 psi | 84% | 2287 fps | 95.7% |
| Lovex S053 | <<locked>> | 86% | 45,643 psi | 86% | 2172 fps | 100% |
| Norma 200 | <<locked>> | 94% | 45,571 psi | 86% | 2290 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,763 psi | 58% | 1394 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 45,890 psi | 87% | 2234 fps | 100% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 41,220 psi | 78% | 2228 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 92% | 44,295 psi | 84% | 2287 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 47,152 psi | 89% | 2060 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 46,920 psi | 89% | 2339 fps | 97.2% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 46,746 psi | 88% | 2306 fps | 98.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 41,466 psi | 78% | 2172 fps | 95.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 39,421 psi | 74% | 2172 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 92% | 45,818 psi | 87% | 2231 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 46,760 psi | 88% | 2264 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 40,480 psi | 76% | 2182 fps | 98.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 33,025 psi | 62% | 2129 fps | 96.8% |
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 1680 | <<locked>> | 80% | 36,129 psi | 68% | 2060 fps | 98.4% |
| Accurate 2015 | <<locked>> | 88% | 28,906 psi | 55% | 2001 fps | 95.3% |
| Accurate 2460 | <<locked>> | 96% | 40,277 psi | 76% | 2228 fps | 95.5% |
| Accurate 2495 | <<locked>> | 98% | 27,833 psi | 53% | 2067 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 84% | 35,027 psi | 66% | 2024 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 90% | 42,598 psi | 80% | 2149 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 31,720 psi | 60% | 2047 fps | 99.8% |
| ADI AR 2219 | 23 gr | 88% | 36,448 psi | 69% | 2165 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 84% | 23,844 psi | 45% | 1916 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 26,368 psi | 50% | 1949 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,533 psi | 63% | 2044 fps | 98.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 32,793 psi | 62% | 2014 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 92% | 34,751 psi | 66% | 2133 fps | 95% |
| Hodgdon H335 | 25.4 gr | 92% | 40,466 psi | 76% | 2241 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 84% | 36,405 psi | 69% | 2057 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,669 psi | 43% | 1211 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,921 psi | 55% | 1952 fps | 97.3% |
| IMR 4227 | <<locked>> | 80% | 39,276 psi | 74% | 2096 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 41,524 psi | 78% | 2244 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 38,276 psi | 72% | 2067 fps | 100% |
| Norma 200 | 19.8 gr | 80% | 29,762 psi | 56% | 2018 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,307 psi | 42% | 1237 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 38,566 psi | 73% | 2123 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 98% | 38,827 psi | 73% | 2188 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 90% | 41,524 psi | 78% | 2244 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,158 psi | 68% | 1916 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 38,711 psi | 73% | 2211 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 32,924 psi | 62% | 2070 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 38,928 psi | 74% | 2133 fps | 95.1% |
| Somchem S335 | <<locked>> | 96% | 34,925 psi | 66% | 2093 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 31,966 psi | 60% | 2018 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 27,325 psi | 52% | 1923 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 90% | 30,240 psi | 57% | 1988 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 96% | 29,167 psi | 55% | 2044 fps | 95.3% |
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 58 powders for 7 x 50 R loaded with the .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,395 fps; across all powders the maximum-charge window runs from 1,358 fps to 2,395 fps. Accurate 2015 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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. Hodgdon H335, ADI AR 2219, Norma 200 rank at the top here: for 7 x 50 R with the .284 | 140gr | Alaska Bullet Works Kodiak SP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2230, Accurate 2520, Accurate 4064 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.