Load data for .38-45 ACP + .358 | 125gr | Rim Rock TC Cowboy
Recommended Powder(s):
Load Specifications
(Use the Personalized Load Calculator below to adjust )
Bullet: | .358 | 125gr | Rim Rock TC Cowboy |
Manufacturer SKU: | #012 |
Bullet Weight: | 125gr | 8.1g |
Bullet Diameter: | 0.358" | 9.09mm |
Bullet Length: | <<locked>> |
Caliber: | .38-45 ACP load data |
Case Length (l3): | 0.898" | 22.8mm |
Cartridge Length (C.O.L.): | <<locked>> |
Seated Depth: | <<locked>> |
Shank Seated Depth: | <<locked>> |
Case Capacity: | 22.0 Grains of Water | 1.43 cm³ |
Primer Size: | Small Pistol (SP) |
Max. allowed Pressure: | 34084 psi | 2350 bar |
LID: | LID_B10538_C596 |
Last updated: | 2026-01-20 |
Load data for 106 loads in caliber .38-45 ACP with .358 | 125gr | Rim Rock TC Cowboy bullet and 53 powder(s). The key underlying parameters are shown in the table above.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge unless there are reasons. Since xxlreloading.com has no control over the equipment and components used by the customer and the data used in connection with the website, any responsibility and liability for the results achieved is rejected. Also see our Terms of Service.
Questions regarding the load data: Please read the information in the next tab "Explanations".
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A load must fulfill certain criteria to be listed in the default view below - see "powder criteria to fulfill to be listed".
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Our load data might deviate from other sources - see the "most common reasons for deviations".
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All loads are based on the bullet and case dimensions shown under "Load Specifications" - see "reloading suggestions" if you deviate.
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You can set your specifications in the "Personalized Load Calculator".
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Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.
Our default view only displays powders/loads that fulfill certain criteria: Max pressure of a load <=90% of Max. Standardized Pressure. Fill Rate (Min FR): >80% and <100% for rife loads, >60% and <100% for pistol loads. Min. Propellant Combustion (Min z): >90% for rifle loads , >80% for pistol/revolver loads. Relax these criteria at your own risk to potentially get more powders shown in the load tables.
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Click on the desired row in the tables below to add a specific load / powder to your Diary and manage there.
Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
ADI AP 100 | 93% | 87% | 95% | |||
ADI AP 70N | 63% | 88% | 100% | |||
ADI APS 350 | 67% | 88% | 100% | |||
ADI APS 450 | 69% | 88% | 100% | |||
ADI AS 30 | 72% | 90% | 100% | |||
ADI AS 50N | 69% | 89% | 100% | |||
Accurate No. 2 | 71% | 89% | 100% | |||
Accurate No. 7 | 75% | 90% | 86% | |||
Accurate Solo 1000 | 71% | 88% | 100% | |||
Accurate Solo 1250 | 77% | 90% | 100% | |||
Alliant BLUE DOT | 96% | 89% | 85% | |||
Alliant BULLSEYE | 67% | 87% | 100% | |||
Alliant POWER PISTOL | 77% | 88% | 94% | |||
Alliant UNIQUE | 76% | 87% | 100% | |||
Baschieri & Pellagri 100 | 72% | 88% | 100% | |||
Baschieri & Pellagri 102 Pistol | 91% | 87% | 100% | |||
Baschieri & Pellagri 103 Pistol | 69% | 89% | 100% | |||
Hodgdon Clays | 67% | 89% | 100% | |||
Hodgdon HS-6 | 64% | 89% | 98% | |||
Hodgdon Universal | 70% | 88% | 100% | |||
Hodgdon CFE Pistol | 72% | 87% | 100% | |||
Hodgdon TrailBoss | 95% | 40% | 100% | |||
Lovex D037.1 | 75% | 90% | 86% | |||
Lovex S020 | 69% | 86% | 100% | |||
Maxam CSB 1 | 80% | 88% | 100% | |||
Maxam CSB 2 | 76% | 86% | 100% | |||
Maxam CSB 3 | 75% | 90% | 100% | |||
Maxam CSB 4 | 71% | 88% | 100% | |||
Maxam CSB 5 | 67% | 87% | 100% | |||
Ramshot Silhouette | 64% | 88% | 100% | |||
ReloadSwiss RS 12 | 66% | 87% | 100% | |||
ReloadSwiss RS 14 | 96% | 37% | 100% | |||
ReloadSwiss RS 20 | 79% | 89% | 100% | |||
ReloadSwiss RS 24 | 81% | 89% | 89% | |||
Rottweil P 806 | 87% | 90% | 99% | |||
SNPE Vectan A0 | 78% | 86% | 100% | |||
SNPE Vectan BA 9 | 71% | 87% | 100% | |||
SNPE Vectan BA10 | 65% | 88% | 100% | |||
SNPE Vectan BA7 1/2 | 85% | 88% | 99% | |||
SNPE Vectan BA9 1/2 | 73% | 89% | 100% | |||
SNPE Vectan SP 2 | 74% | 90% | 96% | |||
Shooters World Major Pistol | 75% | 90% | 86% | |||
Somchem MP200 | 71% | 88% | 100% | |||
Somchem MS200 | 75% | 89% | 100% | |||
Somchem S221 | 67% | 89% | 92% | |||
Vihtavuori 3N37 | 79% | 90% | 99% | |||
Vihtavuori 3N38 | 92% | 90% | 90% | |||
Vihtavuori N105 | 96% | 77% | 91% | |||
Vihtavuori N320 | 70% | 89% | 100% | |||
Vihtavuori N32C Tin Star | 95% | 88% | 100% | |||
Vihtavuori N330 | 72% | 89% | 100% | |||
Vihtavuori N340 | 76% | 88% | 100% | |||
Vihtavuori N350 | 81% | 87% | 99% |
Max Load - Barrel Length: 5.50''
Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
ADI AP 100 | 63% | 38% | 80% | |||
ADI AP 70N | 61% | 81% | 100% | |||
ADI APS 350 | 61% | 76% | 100% | |||
ADI APS 450 | 62% | 73% | 100% | |||
ADI AS 30 | 60% | 66% | 100% | |||
ADI AS 50N | 60% | 71% | 100% | |||
Accurate No. 2 | 61% | 63% | 99% | |||
Accurate No. 7 | 68% | 68% | 81% | |||
Accurate Solo 1000 | 62% | 69% | 100% | |||
Accurate Solo 1250 | 60% | 56% | 100% | |||
Alliant BLUE DOT | 88% | 71% | 80% | |||
Alliant BULLSEYE | 61% | 73% | 100% | |||
Alliant POWER PISTOL | 61% | 53% | 85% | |||
Alliant UNIQUE | 61% | 56% | 99% | |||
Baschieri & Pellagri 100 | 60% | 63% | 100% | |||
Baschieri & Pellagri 102 Pistol | 62% | 40% | 100% | |||
Baschieri & Pellagri 103 Pistol | 61% | 69% | 100% | |||
Hodgdon Clays | 61% | 77% | 100% | |||
Hodgdon HS-6 | 61% | 80% | 97% | |||
Hodgdon Universal | 61% | 67% | 100% | |||
Hodgdon CFE Pistol | 61% | 62% | 100% | |||
Hodgdon TrailBoss | 92% | 38% | 100% | |||
Lovex D037.1 | 68% | 68% | 81% | |||
Lovex S020 | 61% | 65% | 100% | |||
Maxam CSB 1 | 61% | 53% | 100% | |||
Maxam CSB 2 | 61% | 56% | 100% | |||
Maxam CSB 3 | 61% | 62% | 100% | |||
Maxam CSB 4 | 60% | 65% | 100% | |||
Maxam CSB 5 | 61% | 75% | 100% | |||
Ramshot Silhouette | 61% | 81% | 100% | |||
ReloadSwiss RS 12 | 61% | 76% | 100% | |||
ReloadSwiss RS 14 | 94% | 35% | 100% | |||
ReloadSwiss RS 20 | 61% | 52% | 100% | |||
ReloadSwiss RS 24 | 67% | 58% | 80% | |||
Rottweil P 806 | 61% | 34% | 84% | |||
SNPE Vectan A0 | 61% | 54% | 99% | |||
SNPE Vectan BA 9 | 61% | 65% | 100% | |||
SNPE Vectan BA10 | 61% | 80% | 100% | |||
SNPE Vectan BA7 1/2 | 62% | 45% | 90% | |||
SNPE Vectan BA9 1/2 | 61% | 62% | 100% | |||
SNPE Vectan SP 2 | 61% | 56% | 89% | |||
Shooters World Major Pistol | 68% | 68% | 81% | |||
Somchem MP200 | 61% | 66% | 100% | |||
Somchem MS200 | 61% | 61% | 100% | |||
Somchem S221 | 61% | 69% | 88% | |||
Vihtavuori 3N37 | 61% | 51% | 93% | |||
Vihtavuori 3N38 | 75% | 54% | 80% | |||
Vihtavuori N105 | 80% | 46% | 81% | |||
Vihtavuori N320 | 62% | 69% | 100% | |||
Vihtavuori N32C Tin Star | 62% | 41% | 100% | |||
Vihtavuori N330 | 62% | 64% | 100% | |||
Vihtavuori N340 | 61% | 56% | 99% | |||
Vihtavuori N350 | 61% | 45% | 92% |
Start Load - Barrel Length: 5.50''
Any powder missing? Then click here.
FR ... fill rate of the cartridge in percent
MaxP ... max. pressure of load in psi or bar
% ... max. pressure of load in percent of the maximum allowed pressure for this caliber
V(0) ... muzzle velocity in feet per second (fps) or meters per second (m/s)
z ... powder burnt in percent
[...] *... 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.
👍 ... recommended powder/load for this caliber and bullet combination based on its ballistic performance.
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