Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 88gr | Inceptor SRR bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, ADI AR 2219 and Alliant Reloder-10x.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 47,355 psi | 86% | 3533 fps | 99.9% |
| Accurate 2015 | <<locked>> | 98% | 47,210 psi | 86% | 3622 fps | 99.6% |
| Accurate 2460 | <<locked>> | 96% | 49,414 psi | 90% | 3678 fps | 98.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,203 psi | 69% | 3507 fps | 98.9% |
| Accurate 2520 | <<locked>> | 98% | 46,224 psi | 84% | 3658 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 90% | 48,283 psi | 88% | 3547 fps | 98.9% |
| Accurate LT-32 | <<locked>> | 90% | 48,747 psi | 88% | 3556 fps | 97.4% |
| ADI AR 2207 | <<locked>> | 88% | 47,297 psi | 86% | 3619 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 49,168 psi | 89% | 3724 fps | 99% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,847 psi | 85% | 3724 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 94% | 47,863 psi | 87% | 3675 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 49,081 psi | 89% | 3622 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 46,717 psi | 85% | 3517 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 96% | 47,181 psi | 86% | 3579 fps | 96% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 47,500 psi | 86% | 3707 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 94% | 47,413 psi | 86% | 3684 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 94% | 48,718 psi | 88% | 3704 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 86% | 46,920 psi | 85% | 3547 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,444 psi | 57% | 2320 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,280 psi | 80% | 3691 fps | 99% |
| IMR 4198 | <<locked>> | 94% | 49,458 psi | 90% | 3652 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 49,850 psi | 90% | 3583 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 46,572 psi | 85% | 3638 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 96% | 49,617 psi | 90% | 3675 fps | 97% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 43,743 psi | 79% | 3622 fps | 96.7% |
| Lovex S053 | <<locked>> | 84% | 48,283 psi | 88% | 3520 fps | 100% |
| Norma 200 | <<locked>> | 90% | 47,688 psi | 87% | 3645 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 45,397 psi | 82% | 3635 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,009 psi | 56% | 2369 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 49,690 psi | 90% | 3619 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 47,297 psi | 86% | 3645 fps | 96.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 3678 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 88% | 46,572 psi | 85% | 3638 fps | 96.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 43,743 psi | 79% | 3622 fps | 96.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 49,371 psi | 90% | 3343 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 49,705 psi | 90% | 3717 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 48,994 psi | 89% | 3681 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,269 psi | 89% | 3596 fps | 98.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,291 psi | 71% | 3386 fps | 97.1% |
| Somchem S321 | <<locked>> | 96% | 47,979 psi | 87% | 3675 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,442 psi | 86% | 3583 fps | 98.6% |
| Vihtavuori N120 | <<locked>> | 88% | 47,398 psi | 86% | 3556 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 48,689 psi | 88% | 3602 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,283 psi | 88% | 3596 fps | 99.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,972 psi | 73% | 3533 fps | 99% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,018 psi | 78% | 3540 fps | 97.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,640 psi | 76% | 3524 fps | 96.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 48,878 psi | 89% | 3734 fps | 96.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 41,321 psi | 75% | 3409 fps | 99.5% |
| Accurate 2015 | <<locked>> | 84% | 29,573 psi | 54% | 3182 fps | 95.7% |
| Accurate 2460 | <<locked>> | 88% | 36,970 psi | 67% | 3402 fps | 95.1% |
| Accurate 2495 | <<locked>> | 90% | 26,426 psi | 48% | 3166 fps | 95% |
| Accurate 2520 | <<locked>> | 94% | 40,001 psi | 73% | 3524 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 35,085 psi | 64% | 3235 fps | 95.9% |
| Accurate LT-32 | <<locked>> | 84% | 40,161 psi | 73% | 3363 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 36,332 psi | 66% | 3383 fps | 100% |
| ADI AR 2219 | 47.1 gr | 82% | 34,563 psi | 63% | 3369 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 24,033 psi | 44% | 3061 fps | 95.5% |
| Alliant Reloder-10x | 42 gr | 80% | 30,197 psi | 55% | 3232 fps | 97.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,913 psi | 69% | 3379 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,388 psi | 61% | 3199 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 94% | 44,295 psi | 80% | 3514 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 98% | 44,179 psi | 80% | 3635 fps | 95.5% |
| Hodgdon H322 | 46.7 gr | 84% | 33,707 psi | 61% | 3343 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 86% | 36,825 psi | 67% | 3425 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 38,754 psi | 70% | 3356 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,872 psi | 42% | 2080 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 31,792 psi | 58% | 3353 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 32,329 psi | 59% | 3245 fps | 98.5% |
| IMR 4227 | <<locked>> | 80% | 44,092 psi | 80% | 3474 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 40,059 psi | 73% | 3491 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 92% | 43,018 psi | 78% | 3540 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 98% | 40,538 psi | 74% | 3547 fps | 95.8% |
| Lovex S053 | <<locked>> | 80% | 42,786 psi | 78% | 3415 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,258 psi | 62% | 3337 fps | 98.9% |
| Norma 202 | <<locked>> | 94% | 37,115 psi | 67% | 3438 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,655 psi | 41% | 2129 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,569 psi | 79% | 3501 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 41,234 psi | 75% | 3510 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 92% | 38,305 psi | 70% | 3432 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 84% | 40,059 psi | 73% | 3491 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,538 psi | 74% | 3547 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,740 psi | 72% | 3173 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 37,666 psi | 68% | 3442 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 30,937 psi | 56% | 3232 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 37,782 psi | 69% | 3340 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 34,389 psi | 62% | 3261 fps | 95.5% |
| Somchem S321 | <<locked>> | 94% | 44,643 psi | 81% | 3602 fps | 95.1% |
| Somchem S335 | <<locked>> | 90% | 34,287 psi | 62% | 3274 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 36,564 psi | 66% | 3337 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,240 psi | 53% | 3127 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 84% | 28,848 psi | 52% | 3114 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 90% | 28,732 psi | 52% | 3212 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 94% | 35,302 psi | 64% | 3350 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 96% | 36,318 psi | 66% | 3389 fps | 95% |
| Winchester 748 | <<locked>> | 96% | 42,395 psi | 77% | 3589 fps | 95.1% |
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 77 powders for 7.5 x 55 Swiss loaded with the .308 | 88gr | Inceptor SRR. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,816 fps; across all powders the maximum-charge window runs from 2,320 fps to 3,816 fps. Accurate 2495 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 (380 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 88.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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 H322, ADI AR 2219, Alliant Reloder-10x rank at the top here: for 7.5 x 55 Swiss with the .308 | 88gr | Inceptor SRR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, ADI AR 2206H 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.