Load data for .38-45 ACP + .358 | 105gr | Rim Rock TC Cowboy

Recommended Powder(s): Alliant UNIQUE, ReloadSwiss RS 20, SNPE Vectan A0, Somchem MP200, Vihtavuori N340

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.358 \| 105gr \| Rim Rock TC Cowboy
Manufacturer SKU:	#009
Bullet Weight:	105gr \| 6.8g
Bullet Diameter:	0.358" \| 9.09mm
Bullet Length:	0.525" \| 13.3mm
Caliber:	.38-45 ACP load data
Case Length (l3):	0.898" \| 22.8mm
Cartridge Length (C.O.L.):	1.229" \| 31.2mm
Seated Depth:	0.194" \| 4.9mm
Shank Seated Depth:	0.194" \| 4.9mm
Case Capacity:	22.0 Grains of Water \| 1.43 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	34084 psi \| 2350 bar
LID:	LID_B10535_C596
Last updated:	2025-01-01

Load data for 100 loads in caliber .38-45 ACP with .358 | 105gr | Rim Rock TC Cowboy bullet and 50 powders such as Alliant UNIQUE, ReloadSwiss RS 20, SNPE Vectan A0, Somchem MP200, Vihtavuori N340. 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".
A load must fulfill certain criteria to be listed in the default view below - see "powder criteria to fulfill to be listed".

Our load data might deviate from other sources - see the "most common reasons for deviations".

All loads are based on the bullet and case dimensions shown under "Load Specifications" - see "reloading suggestions" if you deviate.

You can set your specifications in the "Personalized Load Calculator".

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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.
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.

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	<<locked>>	95%	28079	82%	**22	92%
ADI AP 70N	<<locked>>	66%	29443	86%	**67	100%
ADI APS 350	<<locked>>	70%	30139	88%	**73	100%
ADI APS 450	<<locked>>	71%	29834	88%	**02	100%
ADI AS 30	<<locked>>	72%	28398	83%	**32	100%
ADI AS 50N	<<locked>>	71%	29283	86%	**01	100%
Accurate No. 2	<<locked>>	72%	28674	84%	**60	99%
Accurate Solo 1000	<<locked>>	74%	30618	90%	**98	100%
Accurate Solo 1250	<<locked>>	80%	30182	89%	**63	100%
Alliant BULLSEYE	<<locked>>	69%	29559	87%	**19	100%
Alliant POWER PISTOL	<<locked>>	80%	29298	86%	**91	91%
Alliant UNIQUE 👍	<<locked>>	79%	28747	84%	**16	100%
Baschieri & Pellagri 100	<<locked>>	74%	28601	84%	**85	100%
Hodgdon Clays	<<locked>>	70%	30545	90%	**86	100%
Hodgdon HS-6	<<locked>>	65%	28819	85%	**29	96%
Hodgdon Longshot	<<locked>>	63%	29791	87%	**39	98%
Hodgdon Universal	<<locked>>	73%	29443	86%	**67	100%
Hodgdon TrailBoss	<<locked>>	96%	12444	37%	**20	100%
Lovex S011	<<locked>>	64%	29254	86%	**14	100%
Lovex S020	<<locked>>	72%	28645	84%	**73	100%
Maxam CSB 1	<<locked>>	81%	28427	83%	**27	100%
Maxam CSB 2	<<locked>>	81%	29791	87%	**63	100%
Maxam CSB 3	<<locked>>	78%	30458	89%	**40	100%
Maxam CSB 4	<<locked>>	75%	29950	88%	**07	100%
Maxam CSB 5	<<locked>>	69%	29167	86%	**35	100%
Ramshot Silhouette	<<locked>>	65%	28834	85%	**09	100%
Ramshot True Blue	<<locked>>	63%	30589	90%	**49	98%
ReloadSwiss RS 12	<<locked>>	70%	30371	89%	**60	100%
ReloadSwiss RS 14	<<locked>>	94%	10863	32%	**7	100%
ReloadSwiss RS 20 👍	<<locked>>	82%	29211	86%	**29	100%
[ReloadSwiss RS 24]*	<<locked>>	83%	29138	85%	**65	84%
Rottweil P 801	<<locked>>	64%	29602	87%	**04	100%
Rottweil P 806	<<locked>>	92%	30356	89%	**54	97%
SNPE Vectan A0 👍	<<locked>>	83%	29965	88%	**80	100%
SNPE Vectan BA 9	<<locked>>	75%	30269	89%	**57	100%
SNPE Vectan BA10	<<locked>>	65%	28645	84%	**89	100%
SNPE Vectan BA7 1/2	<<locked>>	88%	29588	87%	**22	97%
SNPE Vectan BA9 1/2	<<locked>>	76%	29907	88%	**63	100%
Somchem MP200 👍	<<locked>>	75%	30197	89%	**22	100%
Somchem MS200	<<locked>>	77%	28747	84%	**73	100%
[Somchem S221]*	<<locked>>	70%	29994	88%	**72	89%
Vihtavuori 3N37	<<locked>>	81%	28979	85%	**35	98%
[Vihtavuori 3N38]*	<<locked>>	95%	29066	85%	**58	85%
[Vihtavuori N105]*	<<locked>>	96%	23018	68%	**96	85%
Vihtavuori N320	<<locked>>	72%	28892	85%	**01	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	28268	83%	**16	100%
Vihtavuori N330	<<locked>>	77%	30530	90%	**99	100%
Vihtavuori N340 👍	<<locked>>	78%	29225	86%	**93	100%
Vihtavuori N350	<<locked>>	85%	29298	86%	**35	98%
Winchester 231	<<locked>>	63%	30342	89%	**53	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	75%	16897	50%	**37	82%
ADI AP 70N	<<locked>>	61%	24976	73%	**91	100%
ADI APS 350	<<locked>>	61%	24627	72%	**84	100%
ADI APS 450	<<locked>>	60%	22495	66%	**81	100%
ADI AS 30	<<locked>>	61%	21147	62%	**11	100%
ADI AS 50N	<<locked>>	61%	22118	65%	**80	100%
Accurate No. 2	<<locked>>	61%	19638	58%	**76	96%
Accurate Solo 1000	<<locked>>	60%	21016	62%	**30	100%
Accurate Solo 1250	<<locked>>	61%	17231	51%	**04	100%
Alliant BULLSEYE	<<locked>>	61%	22669	67%	**85	100%
[Alliant POWER PISTOL]*	<<locked>>	63%	17376	51%	**89	81%
Alliant UNIQUE	<<locked>>	61%	17114	50%	**50	97%
Baschieri & Pellagri 100	<<locked>>	61%	19624	58%	**20	100%
Hodgdon Clays	<<locked>>	61%	25005	73%	**04	100%
Hodgdon HS-6	<<locked>>	61%	25179	74%	**50	94%
Hodgdon Longshot	<<locked>>	61%	27847	82%	**09	97%
Hodgdon Universal	<<locked>>	61%	20914	61%	**12	100%
Hodgdon TrailBoss	<<locked>>	61%	6092	18%	**4	97%
Lovex S011	<<locked>>	61%	26745	78%	**71	100%
Lovex S020	<<locked>>	61%	19899	58%	**99	99%
Maxam CSB 1	<<locked>>	61%	16578	49%	**84	100%
Maxam CSB 2	<<locked>>	61%	17042	50%	**24	100%
Maxam CSB 3	<<locked>>	61%	19290	57%	**34	100%
Maxam CSB 4	<<locked>>	61%	20653	61%	**47	100%
Maxam CSB 5	<<locked>>	61%	24018	70%	**57	100%
Ramshot Silhouette	<<locked>>	61%	24700	72%	**34	99%
Ramshot True Blue	<<locked>>	61%	28471	84%	**06	97%
ReloadSwiss RS 12	<<locked>>	61%	23221	68%	**39	100%
ReloadSwiss RS 14	<<locked>>	60%	5482	16%	**8	92%
ReloadSwiss RS 20	<<locked>>	61%	15592	46%	**30	98%
[ReloadSwiss RS 24]*	<<locked>>	77%	23598	69%	**50	80%
Rottweil P 801	<<locked>>	62%	27180	80%	**68	100%
[Rottweil P 806]*	<<locked>>	67%	12111	36%	**88	81%
SNPE Vectan A0	<<locked>>	61%	16621	49%	**88	96%
SNPE Vectan BA 9	<<locked>>	61%	20247	59%	**66	100%
SNPE Vectan BA10	<<locked>>	61%	26092	77%	**47	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	13909	41%	**35	85%
SNPE Vectan BA9 1/2	<<locked>>	61%	19392	57%	**63	100%
Somchem MP200	<<locked>>	61%	20494	60%	**25	98%
Somchem MS200	<<locked>>	62%	18826	55%	**70	98%
[Somchem S221]*	<<locked>>	61%	21466	63%	**75	82%
[Vihtavuori 3N37]*	<<locked>>	61%	15316	45%	**04	88%
[Vihtavuori 3N38]*	<<locked>>	85%	22017	65%	**11	80%
[Vihtavuori N105]*	<<locked>>	91%	19798	58%	**07	82%
Vihtavuori N320	<<locked>>	62%	21625	63%	**76	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	11951	35%	**4	100%
Vihtavuori N330	<<locked>>	62%	19334	57%	**93	100%
Vihtavuori N340	<<locked>>	61%	17100	50%	**27	97%
[Vihtavuori N350]*	<<locked>>	61%	13706	40%	**55	86%
Winchester 231	<<locked>>	61%	27934	82%	**14	100%

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.

<<locked>>... you need to buy an access license to unlock the data