Load Specifications
Load data in caliber 9 x 18 Ultra with .355 | 75gr | CutEdge HGHP bullet and 40 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 12, Alliant Green Dot and Maxam CSB 3.
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: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate Solo 1000 | <<locked>> | 84% | 21,625 psi | 83% | 1214 fps | 98.5% |
| Accurate Solo 1250* | <<locked>> | 96% | 21,959 psi | 84% | 1263 fps | 92.5% |
| ADI AP 70N* | <<locked>> | 80% | 21,973 psi | 84% | 1289 fps | 93.7% |
| ADI APS 350² | <<locked>> | 76% | 22,104 psi | 85% | 1132 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 22,162 psi | 85% | 1168 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 22,640 psi | 87% | 1234 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 22,075 psi | 85% | 1247 fps | 98.2% |
| Alliant BE-86 | <<locked>> | 96% | 22,307 psi | 85% | 1280 fps | 95.6% |
| Alliant Green Dot | <<locked>> | 88% | 21,727 psi | 83% | 1243 fps | 98.1% |
| Alliant RED DOT | <<locked>> | 92% | 23,511 psi | 90% | 1276 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 23,395 psi | 90% | 1260 fps | 97.5% |
| Baschieri & Pellagri 102 Pistol*ᴾ | <<locked>> | 100% | 15,505 psi | 59% | 1125 fps | 94.7% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 88% | 22,350 psi | 86% | 1276 fps | 97.9% |
| Hodgdon CFE Pistol*² | <<locked>> | 72% | 22,713 psi | 87% | 1296 fps | 91.7% |
| Hodgdon Clays | <<locked>> | 92% | 23,206 psi | 89% | 1184 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 22,640 psi | 87% | 1266 fps | 95.4% |
| Hodgdon TrailBoss*ᴾ | <<locked>> | 100% | 7,397 psi | 28% | 794 fps | 86.2% |
| Hodgdon Universal* | <<locked>> | 92% | 23,047 psi | 88% | 1312 fps | 94.5% |
| Lovex S011*² | <<locked>> | 76% | 22,524 psi | 86% | 1237 fps | 94.7% |
| Lovex S020* | <<locked>> | 92% | 23,003 psi | 88% | 1299 fps | 88.8% |
| Maxam CSB 1*ᴾ | <<locked>> | 100% | 21,582 psi | 83% | 1250 fps | 92.5% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 20,407 psi | 78% | 1306 fps | 97.4% |
| Maxam CSB 3 | <<locked>> | 96% | 23,424 psi | 90% | 1293 fps | 97.6% |
| Maxam CSB 4 | <<locked>> | 88% | 22,176 psi | 85% | 1257 fps | 99% |
| Maxam CSB 5 | <<locked>> | 84% | 22,423 psi | 86% | 1237 fps | 100% |
| Ramshot Zip*² | <<locked>> | 68% | 22,742 psi | 87% | 1273 fps | 94.7% |
| ReloadSwiss RS 12 | <<locked>> | 92% | 23,061 psi | 88% | 1358 fps | 99.7% |
| Rottweil P 801 | <<locked>> | 80% | 21,915 psi | 84% | 1296 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 88% | 23,540 psi | 90% | 1273 fps | 95.4% |
| SNPE Vectan BA 9* | <<locked>> | 88% | 22,611 psi | 87% | 1247 fps | 90.6% |
| SNPE Vectan BA10² | <<locked>> | 76% | 23,293 psi | 89% | 1188 fps | 100% |
| SNPE Vectan BA9 1/2* | <<locked>> | 92% | 23,032 psi | 88% | 1289 fps | 93.1% |
| Somchem MS200* | <<locked>> | 96% | 23,496 psi | 90% | 1293 fps | 87.8% |
| Vihtavuori N310² | <<locked>> | 68% | 21,582 psi | 83% | 1201 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 21,611 psi | 83% | 1273 fps | 99% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 11,777 psi | 45% | 1001 fps | 98.7% |
| Vihtavuori N330* | <<locked>> | 92% | 22,060 psi | 85% | 1316 fps | 94.5% |
| Winchester 231*² | <<locked>> | 76% | 22,742 psi | 87% | 1273 fps | 94.7% |
| Winchester 244² | <<locked>> | 64% | 21,828 psi | 84% | 1250 fps | 95.6% |
| Winchester AutoComp *ᴾ | <<locked>> | 100% | 22,640 psi | 87% | 1286 fps | 91.7% |
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 Solo 1000*² | <<locked>> | 60% | 12,647 psi | 48% | 971 fps | 91.5% |
| Accurate Solo 1250* | <<locked>> | 80% | 14,823 psi | 57% | 1083 fps | 85.6% |
| ADI AP 70N*² | <<locked>> | 64% | 13,967 psi | 54% | 1070 fps | 85.8% |
| ADI APS 350² | <<locked>> | 60% | 15,229 psi | 58% | 988 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 14,011 psi | 54% | 984 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 12,430 psi | 48% | 968 fps | 96.4% |
| ADI AS 50N*² | <<locked>> | 60% | 12,604 psi | 48% | 988 fps | 90.4% |
| Alliant BE-86*² | <<locked>> | 72% | 12,430 psi | 48% | 1020 fps | 86% |
| Alliant Green Dot*² | 2.7 gr | 60% | 11,821 psi | 45% | 961 fps | 89.4% |
| Alliant RED DOT*² | <<locked>> | 60% | 11,473 psi | 44% | 955 fps | 94.6% |
| Baschieri & Pellagri 100*² | <<locked>> | 60% | 10,820 psi | 41% | 922 fps | 85.6% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 76% | 9,442 psi | 36% | 909 fps | 85.3% |
| Baschieri & Pellagri 103 Pistol*² | <<locked>> | 60% | 10,370 psi | 40% | 945 fps | 85.9% |
| Hodgdon CFE Pistol*² | <<locked>> | 64% | 17,666 psi | 68% | 1171 fps | 87.3% |
| Hodgdon Clays² | <<locked>> | 60% | 11,734 psi | 45% | 912 fps | 99.2% |
| Hodgdon HP38*² | <<locked>> | 60% | 18,014 psi | 69% | 1158 fps | 92.1% |
| Hodgdon TrailBoss* | <<locked>> | 96% | 7,078 psi | 27% | 774 fps | 85.3% |
| Hodgdon Universal*² | <<locked>> | 72% | 14,634 psi | 56% | 1089 fps | 86.7% |
| Lovex S011*² | <<locked>> | 60% | 14,997 psi | 57% | 1050 fps | 88.2% |
| Lovex S020* | <<locked>> | 84% | 19,043 psi | 73% | 1211 fps | 85.3% |
| Maxam CSB 1* | <<locked>> | 80% | 14,214 psi | 54% | 1056 fps | 85.1% |
| Maxam CSB 2*² | <<locked>> | 72% | 10,370 psi | 40% | 994 fps | 85.6% |
| Maxam CSB 3*² | 2.9 gr | 64% | 10,979 psi | 42% | 945 fps | 85.7% |
| Maxam CSB 4*² | <<locked>> | 60% | 11,081 psi | 42% | 945 fps | 89.7% |
| Maxam CSB 5² | <<locked>> | 60% | 12,488 psi | 48% | 997 fps | 98.6% |
| Ramshot Zip*² | <<locked>> | 60% | 17,216 psi | 66% | 1142 fps | 90.3% |
| ReloadSwiss RS 12*² | 3.2 gr | 60% | 9,805 psi | 38% | 978 fps | 88.5% |
| Rottweil P 801² | <<locked>> | 60% | 12,763 psi | 49% | 1056 fps | 96.2% |
| SNPE Vectan A1*² | <<locked>> | 68% | 14,533 psi | 56% | 1047 fps | 87.6% |
| SNPE Vectan BA 9*² | <<locked>> | 76% | 16,665 psi | 64% | 1102 fps | 85.1% |
| SNPE Vectan BA10² | <<locked>> | 60% | 15,824 psi | 61% | 1033 fps | 100% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 76% | 15,374 psi | 59% | 1096 fps | 86% |
| Somchem MS200* | <<locked>> | 92% | 21,567 psi | 83% | 1250 fps | 86.2% |
| Vihtavuori N310² | <<locked>> | 60% | 16,897 psi | 65% | 1109 fps | 100% |
| Vihtavuori N320*² | <<locked>> | 60% | 10,559 psi | 40% | 958 fps | 88.9% |
| Vihtavuori N32C Tin Star*² | <<locked>> | 60% | 5,860 psi | 22% | 715 fps | 87% |
| Vihtavuori N330*² | <<locked>> | 76% | 14,460 psi | 55% | 1109 fps | 86.7% |
| Winchester 231*² | <<locked>> | 60% | 14,214 psi | 54% | 1050 fps | 86.8% |
| Winchester 244*² | <<locked>> | 60% | 19,986 psi | 77% | 1211 fps | 94.5% |
| Winchester AutoComp * | <<locked>> | 84% | 15,664 psi | 60% | 1115 fps | 85.1% |
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 40 powders for 9 x 18 Ultra loaded with the .355 | 75gr | CutEdge HGHP. ReloadSwiss RS 12 delivers the highest muzzle velocity at 1,358 fps; across all powders the maximum-charge window runs from 794 fps to 1,358 fps. Baschieri & Pellagri 102 Pistol gives the best case fill at 100 %, and 31 of the 40 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (180 MPa), the top charges use 28–90 %, leaving at least 10 % headroom. Baschieri & Pellagri 102 Pistol, Hodgdon TrailBoss, Maxam CSB 1 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 12, Alliant Green Dot, Maxam CSB 3 rank at the top here: for 9 x 18 Ultra with the .355 | 75gr | CutEdge HGHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate Solo 1250, ADI AP 70N, Baschieri & Pellagri 102 Pistol burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1000, Accurate Solo 1250, ADI AP 70N 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.