Load Specifications
Load data in caliber .45 Glock Auto Pistol with .452 | 180gr | Rim Rock RNFP Cowboy bullet and 26 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 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: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 64% | 16,433 psi | 87% | 968 fps | 87.6% |
| Accurate Solo 1250² | <<locked>> | 68% | 15,809 psi | 84% | 968 fps | 96.6% |
| Alliant BE-86² | <<locked>> | 68% | 16,230 psi | 86% | 984 fps | 98.8% |
| Alliant Herco* | <<locked>> | 84% | 16,868 psi | 89% | 1020 fps | 91.7% |
| Alliant UNIQUE*² | <<locked>> | 68% | 15,534 psi | 82% | 991 fps | 90.2% |
| Baschieri & Pellagri 100² | <<locked>> | 64% | 16,665 psi | 88% | 955 fps | 99.6% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 16,128 psi | 86% | 978 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 16,882 psi | 90% | 994 fps | 99.9% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 15,708 psi | 83% | 971 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,240 psi | 54% | 791 fps | 99.3% |
| Hodgdon Universal² | <<locked>> | 64% | 16,955 psi | 90% | 1004 fps | 98% |
| Lovex S020*² | <<locked>> | 64% | 15,925 psi | 84% | 988 fps | 93.3% |
| Maxam CSB 1² | <<locked>> | 72% | 16,534 psi | 88% | 981 fps | 97.2% |
| Maxam CSB 2² | <<locked>> | 72% | 16,273 psi | 86% | 1020 fps | 99.9% |
| Maxam CSB 3² | <<locked>> | 64% | 15,534 psi | 82% | 948 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,166 psi | 49% | 774 fps | 95.2% |
| ReloadSwiss RS 20*² | <<locked>> | 72% | 15,476 psi | 82% | 1007 fps | 92.6% |
| SNPE Vectan A0*² | <<locked>> | 68% | 15,447 psi | 82% | 945 fps | 89.7% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 16,882 psi | 90% | 974 fps | 95.5% |
| SNPE Vectan BA9 1/2² | <<locked>> | 64% | 15,969 psi | 85% | 971 fps | 96.4% |
| Somchem MP200*² | <<locked>> | 64% | 16,360 psi | 87% | 994 fps | 89.3% |
| Somchem MS200*² | <<locked>> | 64% | 15,287 psi | 81% | 955 fps | 91.1% |
| Vihtavuori N32C Tin Star | <<locked>> | 92% | 15,780 psi | 84% | 925 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 15,331 psi | 81% | 994 fps | 97.8% |
| Vihtavuori N340*² | <<locked>> | 68% | 15,882 psi | 84% | 981 fps | 90.9% |
| Winchester AutoComp ² | <<locked>> | 68% | 15,243 psi | 81% | 961 fps | 95% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 14,533 psi | 77% | 919 fps | 85.3% |
| Accurate Solo 1250*² | <<locked>> | 60% | 12,647 psi | 67% | 886 fps | 93.6% |
| Alliant BE-86² | <<locked>> | 60% | 12,604 psi | 67% | 892 fps | 96.2% |
| Alliant Herco*² | <<locked>> | 72% | 12,517 psi | 66% | 902 fps | 86.2% |
| Alliant UNIQUE*² | <<locked>> | 60% | 12,386 psi | 66% | 899 fps | 85.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 14,692 psi | 78% | 912 fps | 98.8% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 8,644 psi | 46% | 768 fps | 95% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 14,953 psi | 79% | 951 fps | 99.5% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 14,040 psi | 74% | 928 fps | 94.6% |
| Hodgdon TrailBoss*² | 3.1 gr | 60% | 4,946 psi | 26% | 564 fps | 89.7% |
| Hodgdon Universal² | <<locked>> | 60% | 15,084 psi | 80% | 961 fps | 96.7% |
| Lovex S020*² | <<locked>> | 60% | 14,127 psi | 75% | 942 fps | 91.4% |
| Maxam CSB 1*² | <<locked>> | 60% | 11,835 psi | 63% | 856 fps | 92.6% |
| Maxam CSB 2² | <<locked>> | 60% | 11,487 psi | 61% | 892 fps | 97.5% |
| Maxam CSB 3² | <<locked>> | 60% | 14,141 psi | 75% | 915 fps | 98.5% |
| ReloadSwiss RS 14*² | <<locked>> | 68% | 5,381 psi | 29% | 597 fps | 85.6% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 11,052 psi | 59% | 869 fps | 85.6% |
| SNPE Vectan A0*² | <<locked>> | 60% | 12,343 psi | 65% | 860 fps | 85.5% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 15,142 psi | 80% | 932 fps | 94% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 14,214 psi | 75% | 925 fps | 94.9% |
| Somchem MP200*² | <<locked>> | 60% | 14,750 psi | 78% | 951 fps | 87.4% |
| Somchem MS200*² | <<locked>> | 60% | 13,663 psi | 72% | 912 fps | 89.1% |
| Vihtavuori N32C Tin Star² | 4.2 gr | 60% | 7,556 psi | 40% | 705 fps | 99.5% |
| Vihtavuori N330² | <<locked>> | 60% | 13,489 psi | 72% | 945 fps | 96.3% |
| Vihtavuori N340*² | <<locked>> | 60% | 12,589 psi | 67% | 889 fps | 86.7% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,328 psi | 65% | 883 fps | 91.8% |
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 5 powders for .45 Glock Auto Pistol loaded with the .452 | 180gr | Rim Rock RNFP Cowboy. Alliant Herco delivers the highest muzzle velocity at 1,020 fps; across all powders the maximum-charge window runs from 774 fps to 1,020 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 5 of the 5 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (130 MPa), the top charges use 49–89 %, leaving at least 11 % headroom. 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, Hodgdon TrailBoss rank at the top here: for .45 Glock Auto Pistol with the .452 | 180gr | Rim Rock RNFP Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Herco burn incompletely and react more sensitively to barrel length and temperature. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon TrailBoss 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.