Load data for .357 Maximum + .358 | 125gr | Rim Rock TC Cowboy

Recommended Powder(s): ADI AP 100, Rottweil P 806, SNPE Vectan BA7 1/2, Vihtavuori N105, Vihtavuori N350

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:	0.541" \| 13.7mm
Caliber:	.357 Maximum load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	1.773" \| 45.0mm
Seated Depth:	0.368" \| 9.3mm
Shank Seated Depth:	0.368" \| 9.3mm
Case Capacity:	33.6 Grains of Water \| 2.18 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B10538_C515
Last updated:	2025-01-01

Load data for 112 loads in caliber .357 Maximum with .358 | 125gr | Rim Rock TC Cowboy bullet and 56 powders such as ADI AP 100, Rottweil P 806, SNPE Vectan BA7 1/2, Vihtavuori N105, Vihtavuori N350. 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".

Go to the bottom of the "Dashboard " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
We recommend you limit powder range to relevant brands to speed up re-calculation of results
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.
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>>	93%	40393	90%	**47	100%
ADI AP 70N	<<locked>>	65%	40118	89%	**16	100%
ADI APS 350	<<locked>>	72%	38334	85%	**16	100%
ADI APS 450	<<locked>>	74%	38885	86%	**52	100%
ADI AS 30	<<locked>>	75%	39015	87%	**94	100%
ADI AS 50N	<<locked>>	70%	38421	85%	**30	100%
Accurate No. 2	<<locked>>	72%	40350	90%	**49	100%
Accurate No. 7	<<locked>>	71%	38957	87%	**80	94%
[Accurate No. 9]*	<<locked>>	79%	39421	88%	**77	88%
Accurate Solo 1000	<<locked>>	73%	39001	87%	**21	100%
Accurate Solo 1250	<<locked>>	77%	39494	88%	**86	100%
Accurate TCM	<<locked>>	80%	39421	88%	**63	90%
[Alliant 2400]*	<<locked>>	90%	39566	88%	**93	85%
Alliant BLUE DOT	<<locked>>	93%	40219	89%	**96	93%
Alliant BULLSEYE	<<locked>>	68%	39146	87%	**55	100%
Alliant POWER PISTOL	<<locked>>	77%	40437	90%	**86	99%
Alliant UNIQUE	<<locked>>	76%	38537	86%	**65	100%
Baschieri & Pellagri 100	<<locked>>	75%	40393	90%	**40	100%
Hodgdon Clays	<<locked>>	72%	39189	87%	**32	100%
Hodgdon Universal	<<locked>>	72%	40118	89%	**16	100%
Hodgdon TrailBoss	<<locked>>	94%	17550	39%	**56	100%
Lovex D037.1	<<locked>>	71%	38957	87%	**80	94%
[Lovex D037.2]*	<<locked>>	79%	40132	89%	**83	89%
Lovex S011	<<locked>>	63%	38783	86%	**50	100%
Lovex S020	<<locked>>	70%	40306	90%	**35	100%
Maxam CSB 1	<<locked>>	82%	40408	90%	**99	100%
Maxam CSB 2	<<locked>>	77%	40292	90%	**86	100%
Maxam CSB 3	<<locked>>	75%	38856	86%	**47	100%
Maxam CSB 4	<<locked>>	73%	39073	87%	**27	100%
Maxam CSB 5	<<locked>>	71%	40263	90%	**91	100%
[Ramshot Enforcer]*	<<locked>>	91%	39769	88%	**13	87%
Ramshot Silhouette	<<locked>>	63%	38421	85%	**52	100%
ReloadSwiss RS 12	<<locked>>	67%	40001	89%	**67	100%
ReloadSwiss RS 14	<<locked>>	96%	16781	37%	**73	100%
ReloadSwiss RS 20	<<locked>>	77%	39131	87%	**45	100%
ReloadSwiss RS 24	<<locked>>	78%	39262	87%	**70	96%
Rottweil P 801	<<locked>>	63%	39653	88%	**34	100%
Rottweil P 806 👍	<<locked>>	81%	39784	88%	**80	100%
SNPE Vectan A0	<<locked>>	81%	40118	89%	**32	100%
SNPE Vectan BA 9	<<locked>>	73%	39262	87%	**90	100%
SNPE Vectan BA10	<<locked>>	70%	39929	89%	**62	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	84%	39001	87%	**72	100%
SNPE Vectan BA9 1/2	<<locked>>	74%	39494	88%	**96	100%
[Shooters World Heavy Pistol]*	<<locked>>	79%	40132	89%	**83	89%
Shooters World Major Pistol	<<locked>>	71%	38957	87%	**80	94%
Somchem MP200	<<locked>>	70%	38870	86%	**52	100%
Somchem MS200	<<locked>>	76%	39914	89%	**35	100%
Somchem S221	<<locked>>	66%	40234	89%	**63	98%
Vihtavuori 3N37	<<locked>>	77%	39204	87%	**08	100%
Vihtavuori 3N38	<<locked>>	88%	39276	87%	**63	97%
Vihtavuori N105 👍	<<locked>>	94%	39827	89%	**03	99%
Vihtavuori N320	<<locked>>	71%	39030	87%	**40	100%
Vihtavuori N32C Tin Star	<<locked>>	97%	39262	87%	**55	100%
Vihtavuori N330	<<locked>>	72%	39624	88%	**03	100%
Vihtavuori N340	<<locked>>	76%	39900	89%	**35	100%
Vihtavuori N350 👍	<<locked>>	80%	38754	86%	**88	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	16752	37%	**68	88%
ADI AP 70N	<<locked>>	61%	35853	80%	**60	100%
ADI APS 350	<<locked>>	61%	29530	66%	**91	100%
ADI APS 450	<<locked>>	61%	28645	64%	**11	100%
ADI AS 30	<<locked>>	61%	28471	63%	**50	100%
ADI AS 50N	<<locked>>	60%	30139	67%	**12	100%
Accurate No. 2	<<locked>>	61%	28906	64%	**88	100%
[Accurate No. 7]*	<<locked>>	61%	26324	59%	**40	87%
[Accurate No. 9]*	<<locked>>	69%	26847	60%	**44	81%
Accurate Solo 1000	<<locked>>	61%	28689	64%	**80	100%
Accurate Solo 1250	<<locked>>	61%	25309	56%	**83	100%
[Accurate TCM]*	<<locked>>	66%	24526	55%	**94	81%
[Alliant 2400]*	<<locked>>	83%	31473	70%	**49	81%
[Alliant BLUE DOT]*	<<locked>>	70%	20334	45%	**96	80%
Alliant BULLSEYE	<<locked>>	61%	32735	73%	**70	100%
Alliant POWER PISTOL	<<locked>>	61%	24990	56%	**11	94%
Alliant UNIQUE	<<locked>>	61%	25541	57%	**45	100%
Baschieri & Pellagri 100	<<locked>>	61%	27818	62%	**73	100%
Hodgdon Clays	<<locked>>	61%	30124	67%	**14	100%
Hodgdon Universal	<<locked>>	61%	29892	66%	**65	100%
Hodgdon TrailBoss	<<locked>>	61%	8862	20%	**7	100%
[Lovex D037.1]*	<<locked>>	61%	26324	59%	**40	87%
[Lovex D037.2]*	<<locked>>	68%	26397	59%	**34	80%
Lovex S011	<<locked>>	61%	36535	81%	**21	100%
Lovex S020	<<locked>>	61%	29617	66%	**81	100%
Maxam CSB 1	<<locked>>	61%	23337	52%	**40	100%
Maxam CSB 2	<<locked>>	61%	26165	58%	**86	100%
Maxam CSB 3	<<locked>>	61%	26818	60%	**76	100%
Maxam CSB 4	<<locked>>	61%	28543	63%	**93	100%
Maxam CSB 5	<<locked>>	61%	31372	70%	**80	100%
[Ramshot Enforcer]*	<<locked>>	82%	30110	67%	**39	81%
Ramshot Silhouette	<<locked>>	61%	36564	81%	**29	100%
ReloadSwiss RS 12	<<locked>>	61%	33663	75%	**81	100%
ReloadSwiss RS 14	<<locked>>	60%	8064	18%	**4	100%
ReloadSwiss RS 20	<<locked>>	61%	24033	53%	**19	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	22510	50%	**42	86%
Rottweil P 801	<<locked>>	61%	37463	83%	**01	100%
Rottweil P 806	<<locked>>	61%	19029	42%	**86	95%
SNPE Vectan A0	<<locked>>	61%	23946	53%	**83	100%
SNPE Vectan BA 9	<<locked>>	61%	28137	63%	**29	100%
SNPE Vectan BA10	<<locked>>	60%	31517	70%	**50	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	20566	46%	**53	97%
SNPE Vectan BA9 1/2	<<locked>>	61%	27760	62%	**25	100%
[Shooters World Heavy Pistol]*	<<locked>>	68%	26397	59%	**34	80%
[Shooters World Major Pistol]*	<<locked>>	61%	26324	59%	**40	87%
Somchem MP200	<<locked>>	61%	29399	65%	**17	100%
Somchem MS200	<<locked>>	61%	26600	59%	**39	100%
Somchem S221	<<locked>>	61%	33228	74%	**49	96%
Vihtavuori 3N37	<<locked>>	61%	23743	53%	**48	99%
[Vihtavuori 3N38]*	<<locked>>	61%	16824	37%	**91	81%
[Vihtavuori N105]*	<<locked>>	63%	13837	31%	**35	80%
Vihtavuori N320	<<locked>>	61%	30269	67%	**16	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	17463	39%	**30	100%
Vihtavuori N330	<<locked>>	61%	28964	64%	**52	100%
Vihtavuori N340	<<locked>>	61%	25976	58%	**39	100%
Vihtavuori N350	<<locked>>	61%	21625	48%	**99	98%

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