Load Specifications
Load data in caliber 9 x 18 Ultra with .355 | 115gr | Norma HP bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N330, Hodgdon Universal and Maxam CSB 2.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2* | <<locked>> | 84% | 23,293 psi | 89% | 958 fps | 88.3% |
| Accurate Solo 1000 | <<locked>> | 80% | 22,510 psi | 86% | 935 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 21,756 psi | 83% | 965 fps | 97.2% |
| ADI AP 70N² | <<locked>> | 76% | 21,770 psi | 83% | 984 fps | 98% |
| ADI APS 350² | <<locked>> | 76% | 23,322 psi | 89% | 856 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 21,611 psi | 83% | 866 fps | 100% |
| ADI AS 30 | <<locked>> | 84% | 23,221 psi | 89% | 935 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 23,496 psi | 90% | 971 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 22,960 psi | 88% | 991 fps | 99.3% |
| Alliant BULLSEYE* | <<locked>> | 80% | 22,466 psi | 86% | 997 fps | 92.8% |
| Alliant Green Dot | <<locked>> | 84% | 21,814 psi | 84% | 945 fps | 100% |
| Alliant Herco*ᴾ | <<locked>> | 100% | 17,347 psi | 66% | 912 fps | 87.6% |
| Alliant RED DOT | <<locked>> | 88% | 22,989 psi | 88% | 951 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 76% | 23,206 psi | 89% | 1007 fps | 92.3% |
| Alliant UNIQUE* | <<locked>> | 96% | 23,279 psi | 89% | 1030 fps | 92.6% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 21,016 psi | 81% | 922 fps | 99.4% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 17,593 psi | 67% | 902 fps | 99.5% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 22,727 psi | 87% | 981 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 22,089 psi | 85% | 984 fps | 96.3% |
| Hodgdon Clays | <<locked>> | 88% | 23,322 psi | 89% | 889 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 22,104 psi | 85% | 958 fps | 98.8% |
| Hodgdon TrailBoss*ᴾ | <<locked>> | 100% | 7,702 psi | 30% | 633 fps | 93.5% |
| Hodgdon Universal | <<locked>> | 88% | 23,032 psi | 88% | 1004 fps | 98.4% |
| Lovex S011² | <<locked>> | 72% | 21,872 psi | 84% | 935 fps | 98.3% |
| Lovex S020* | <<locked>> | 88% | 23,119 psi | 89% | 1001 fps | 94.6% |
| Maxam CSB 1 | <<locked>> | 96% | 22,989 psi | 88% | 981 fps | 97.8% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 23,090 psi | 88% | 1037 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 22,655 psi | 87% | 971 fps | 99.8% |
| Maxam CSB 4 | <<locked>> | 84% | 22,829 psi | 87% | 961 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 23,264 psi | 89% | 935 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 76% | 21,074 psi | 81% | 971 fps | 87.8% |
| Ramshot Zip² | <<locked>> | 64% | 22,437 psi | 86% | 968 fps | 98.4% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 21,669 psi | 83% | 1007 fps | 100% |
| ReloadSwiss RS 20*ᴾ | <<locked>> | 100% | 23,018 psi | 88% | 1033 fps | 94.6% |
| Rottweil P 801² | <<locked>> | 76% | 21,712 psi | 83% | 974 fps | 100% |
| SNPE Vectan A0* | <<locked>> | 92% | 21,509 psi | 82% | 945 fps | 90.6% |
| SNPE Vectan A1 | <<locked>> | 84% | 22,771 psi | 87% | 961 fps | 98.7% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 21,814 psi | 84% | 945 fps | 95.3% |
| SNPE Vectan BA10² | <<locked>> | 72% | 23,119 psi | 89% | 886 fps | 100% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 23,395 psi | 90% | 994 fps | 97.7% |
| Somchem MP200* | <<locked>> | 84% | 21,741 psi | 83% | 978 fps | 89.6% |
| Somchem MS200* | <<locked>> | 88% | 21,741 psi | 83% | 968 fps | 92.5% |
| Vihtavuori N310² | <<locked>> | 64% | 21,408 psi | 82% | 892 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 21,654 psi | 83% | 965 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 13,126 psi | 50% | 787 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 22,002 psi | 84% | 1007 fps | 98.7% |
| Vihtavuori N340* | <<locked>> | 92% | 22,872 psi | 88% | 991 fps | 92.3% |
| Winchester 231² | <<locked>> | 72% | 22,437 psi | 86% | 968 fps | 98.4% |
| Winchester AutoComp | <<locked>> | 96% | 22,727 psi | 87% | 994 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2* | <<locked>> | 80% | 20,349 psi | 78% | 912 fps | 86% |
| Accurate Solo 1000² | <<locked>> | 60% | 12,734 psi | 49% | 748 fps | 96.6% |
| Accurate Solo 1250*² | <<locked>> | 64% | 11,066 psi | 42% | 738 fps | 86.8% |
| ADI AP 70N*² | <<locked>> | 60% | 13,242 psi | 51% | 810 fps | 91.3% |
| ADI APS 350² | <<locked>> | 60% | 15,534 psi | 60% | 745 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 14,823 psi | 57% | 758 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 12,952 psi | 50% | 755 fps | 99.7% |
| ADI AS 50N² | <<locked>> | 60% | 12,792 psi | 49% | 764 fps | 96% |
| Alliant BE-86*² | <<locked>> | 60% | 9,732 psi | 37% | 712 fps | 88.2% |
| Alliant BULLSEYE*² | <<locked>> | 68% | 16,520 psi | 63% | 879 fps | 87.5% |
| Alliant Green Dot² | <<locked>> | 60% | 12,647 psi | 48% | 764 fps | 95.9% |
| Alliant Herco* | <<locked>> | 96% | 16,462 psi | 63% | 896 fps | 86.7% |
| Alliant RED DOT² | <<locked>> | 60% | 11,748 psi | 45% | 738 fps | 98.8% |
| Alliant Sport Pistol*² | <<locked>> | 64% | 16,244 psi | 62% | 873 fps | 86% |
| Alliant UNIQUE* | <<locked>> | 80% | 15,693 psi | 60% | 879 fps | 85.7% |
| Baschieri & Pellagri 100*² | <<locked>> | 60% | 11,211 psi | 43% | 722 fps | 92.5% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 6,773 psi | 26% | 610 fps | 85.8% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 60% | 11,240 psi | 43% | 761 fps | 94% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 17,709 psi | 68% | 906 fps | 93.4% |
| Hodgdon Clays² | <<locked>> | 60% | 11,850 psi | 45% | 696 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 19,537 psi | 75% | 915 fps | 97.8% |
| Hodgdon TrailBoss* | <<locked>> | 80% | 5,337 psi | 20% | 528 fps | 86.5% |
| Hodgdon Universal*² | 2.5 gr | 60% | 11,574 psi | 44% | 764 fps | 88.9% |
| Lovex S011*² | <<locked>> | 60% | 15,577 psi | 60% | 820 fps | 94.5% |
| Lovex S020*² | <<locked>> | 72% | 14,721 psi | 56% | 846 fps | 87.5% |
| Maxam CSB 1*² | <<locked>> | 68% | 11,458 psi | 44% | 745 fps | 87.7% |
| Maxam CSB 2*² | 2.3 gr | 60% | 7,774 psi | 30% | 682 fps | 87.1% |
| Maxam CSB 3*² | <<locked>> | 60% | 10,631 psi | 41% | 722 fps | 91.6% |
| Maxam CSB 4² | <<locked>> | 60% | 12,096 psi | 46% | 758 fps | 96.5% |
| Maxam CSB 5² | <<locked>> | 60% | 13,677 psi | 52% | 781 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 72% | 18,927 psi | 73% | 932 fps | 85.8% |
| Ramshot Zip² | <<locked>> | 60% | 18,739 psi | 72% | 906 fps | 96.7% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 10,892 psi | 42% | 791 fps | 96.5% |
| ReloadSwiss RS 20* | <<locked>> | 84% | 15,548 psi | 60% | 886 fps | 87.5% |
| Rottweil P 801² | <<locked>> | 60% | 13,619 psi | 52% | 830 fps | 99.8% |
| SNPE Vectan A0* | <<locked>> | 80% | 16,201 psi | 62% | 843 fps | 85.6% |
| SNPE Vectan A1*² | <<locked>> | 60% | 12,502 psi | 48% | 758 fps | 91.1% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 12,009 psi | 46% | 741 fps | 85.4% |
| SNPE Vectan BA10² | <<locked>> | 60% | 17,347 psi | 66% | 801 fps | 100% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 11,081 psi | 42% | 735 fps | 86.4% |
| Somchem MP200*² | <<locked>> | 76% | 17,463 psi | 67% | 899 fps | 85.6% |
| Somchem MS200*² | <<locked>> | 72% | 14,431 psi | 55% | 820 fps | 85.3% |
| Vihtavuori N310² | <<locked>> | 60% | 18,231 psi | 70% | 846 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 11,052 psi | 42% | 755 fps | 95.8% |
| Vihtavuori N32C Tin Star*² | <<locked>> | 60% | 5,802 psi | 22% | 564 fps | 93.9% |
| Vihtavuori N330*² | 2.6 gr | 60% | 9,993 psi | 38% | 735 fps | 86.4% |
| Vihtavuori N340* | <<locked>> | 80% | 16,969 psi | 65% | 886 fps | 87.4% |
| Winchester 231*² | <<locked>> | 60% | 15,519 psi | 59% | 840 fps | 94.3% |
| Winchester AutoComp *² | <<locked>> | 68% | 11,690 psi | 45% | 764 fps | 86.3% |
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 49 powders for 9 x 18 Ultra loaded with the .355 | 115gr | Norma HP. Maxam CSB 2 delivers the highest muzzle velocity at 1,037 fps; across all powders the maximum-charge window runs from 633 fps to 1,037 fps. Alliant Herco gives the best case fill at 100 %, and 36 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (180 MPa), the top charges use 30–90 %, leaving at least 10 % headroom. Alliant Herco, Baschieri & Pellagri 102 Pistol, 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. Vihtavuori N330, Hodgdon Universal, Maxam CSB 2 rank at the top here: for 9 x 18 Ultra with the .355 | 115gr | Norma HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 2, Alliant BULLSEYE, Alliant Herco burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 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.