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

Recommended Powder(s): Rottweil P 806, SNPE Vectan BA7 1/2

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 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.264" \| 6.7mm
Shank Seated Depth:	0.264" \| 6.7mm
Case Capacity:	35.0 Grains of Water \| 2.27 cm³
Primer Size:	Small Pistol Magnum (SPM)
Max. allowed Pressure:	36985 psi \| 2550 bar
LID:	LID_B10538_C511
Last updated:	2025-01-01

Load data for 90 loads in caliber .357 Auto Magnum with .358 | 125gr | Rim Rock TC Cowboy bullet and 45 powders such as Rottweil P 806, SNPE Vectan BA7 1/2. 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>>	81%	32721	88%	**94	99%
ADI APS 350	<<locked>>	63%	32489	88%	**96	100%
ADI APS 450	<<locked>>	64%	31662	86%	**12	100%
ADI AS 30	<<locked>>	65%	32938	89%	**75	100%
Accurate No. 2	<<locked>>	62%	32227	87%	**03	100%
Accurate No. 7	<<locked>>	63%	32082	87%	**27	92%
[Accurate No. 9]*	<<locked>>	71%	32126	87%	**21	86%
Accurate Solo 1000	<<locked>>	63%	31807	86%	**91	100%
Accurate Solo 1250	<<locked>>	67%	32285	87%	**57	100%
[Accurate TCM]*	<<locked>>	71%	32503	88%	**27	88%
[Alliant 2400]*	<<locked>>	81%	33185	90%	**67	84%
Alliant BLUE DOT	<<locked>>	83%	33069	89%	**40	91%
Alliant POWER PISTOL	<<locked>>	67%	33069	89%	**34	98%
Alliant UNIQUE	<<locked>>	66%	31778	86%	**26	100%
Baschieri & Pellagri 100	<<locked>>	65%	33156	90%	**14	100%
Hodgdon Clays	<<locked>>	63%	33025	89%	**12	100%
[Hodgdon LilGun]*	<<locked>>	93%	33170	90%	**26	83%
Hodgdon Universal	<<locked>>	63%	33243	90%	**83	100%
Hodgdon TrailBoss	<<locked>>	97%	19464	53%	**35	100%
Lovex D037.1	<<locked>>	63%	32082	87%	**27	92%
[Lovex D037.2]*	<<locked>>	71%	32808	89%	**34	86%
Maxam CSB 1	<<locked>>	71%	33141	90%	**60	100%
Maxam CSB 2	<<locked>>	67%	33156	90%	**63	100%
Maxam CSB 3	<<locked>>	67%	33141	90%	**34	100%
Maxam CSB 4	<<locked>>	63%	31662	86%	**91	100%
[Ramshot Enforcer]*	<<locked>>	82%	33141	90%	**70	85%
ReloadSwiss RS 14	<<locked>>	95%	17550	47%	**32	100%
ReloadSwiss RS 20	<<locked>>	68%	32619	88%	**26	100%
ReloadSwiss RS 24	<<locked>>	69%	32256	87%	**34	94%
Rottweil P 806 👍	<<locked>>	72%	31981	86%	**08	100%
SNPE Vectan A0	<<locked>>	70%	32750	89%	**93	100%
SNPE Vectan BA 9	<<locked>>	64%	32851	89%	**63	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	74%	32648	88%	**58	100%
SNPE Vectan BA9 1/2	<<locked>>	65%	33156	90%	**80	100%
[Shooters World Heavy Pistol]*	<<locked>>	71%	32808	89%	**34	86%
Shooters World Major Pistol	<<locked>>	63%	32082	87%	**27	92%
Somchem MP200	<<locked>>	63%	33272	90%	**42	100%
Somchem MS200	<<locked>>	66%	32837	89%	**12	100%
Vihtavuori 3N37	<<locked>>	67%	32068	87%	**58	100%
Vihtavuori 3N38	<<locked>>	78%	32547	88%	**17	95%
Vihtavuori N105	<<locked>>	84%	32460	88%	**60	98%
Vihtavuori N32C Tin Star	<<locked>>	84%	32271	87%	**29	100%
Vihtavuori N330	<<locked>>	63%	32285	87%	**60	100%
Vihtavuori N340	<<locked>>	66%	32213	87%	**99	100%
Vihtavuori N350	<<locked>>	71%	32416	88%	**72	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	18173	49%	**60	91%
ADI APS 350	<<locked>>	61%	30574	83%	**66	100%
ADI APS 450	<<locked>>	61%	29994	81%	**86	100%
ADI AS 30	<<locked>>	61%	29327	79%	**16	100%
Accurate No. 2	<<locked>>	61%	30313	82%	**70	100%
Accurate No. 7	<<locked>>	61%	29443	80%	**78	90%
[Accurate No. 9]*	<<locked>>	64%	24976	68%	**63	81%
Accurate Solo 1000	<<locked>>	61%	29994	81%	**62	100%
Accurate Solo 1250	<<locked>>	61%	27253	74%	**71	100%
[Accurate TCM]*	<<locked>>	61%	22176	60%	**04	80%
[Alliant 2400]*	<<locked>>	77%	29341	79%	**81	81%
[Alliant BLUE DOT]*	<<locked>>	65%	19624	53%	**35	81%
Alliant POWER PISTOL	<<locked>>	61%	27398	74%	**32	96%
Alliant UNIQUE	<<locked>>	61%	27079	73%	**30	100%
Baschieri & Pellagri 100	<<locked>>	61%	29704	80%	**65	100%
Hodgdon Clays	<<locked>>	61%	31198	84%	**89	100%
[Hodgdon LilGun]*	<<locked>>	91%	30458	82%	**57	81%
Hodgdon Universal	<<locked>>	61%	31575	85%	**50	100%
Hodgdon TrailBoss	<<locked>>	61%	9500	26%	**3	100%
Lovex D037.1	<<locked>>	61%	29443	80%	**78	90%
[Lovex D037.2]*	<<locked>>	63%	24497	66%	**53	80%
Maxam CSB 1	<<locked>>	61%	25193	68%	**29	100%
Maxam CSB 2	<<locked>>	61%	28166	76%	**81	100%
Maxam CSB 3	<<locked>>	61%	28050	76%	**52	100%
Maxam CSB 4	<<locked>>	61%	29936	81%	**71	100%
[Ramshot Enforcer]*	<<locked>>	77%	28050	76%	**58	81%
ReloadSwiss RS 14	<<locked>>	60%	8673	23%	**3	100%
ReloadSwiss RS 20	<<locked>>	61%	26179	71%	**14	100%
ReloadSwiss RS 24	<<locked>>	61%	24598	67%	**67	90%
Rottweil P 806	<<locked>>	61%	21698	59%	**01	97%
SNPE Vectan A0	<<locked>>	61%	25295	68%	**68	100%
SNPE Vectan BA 9	<<locked>>	61%	29762	80%	**17	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	22278	60%	**52	98%
SNPE Vectan BA9 1/2	<<locked>>	61%	30008	81%	**21	100%
[Shooters World Heavy Pistol]*	<<locked>>	63%	24497	66%	**53	80%
Shooters World Major Pistol	<<locked>>	61%	29443	80%	**78	90%
Somchem MP200	<<locked>>	61%	31720	86%	**16	100%
Somchem MS200	<<locked>>	61%	28007	76%	**30	100%
Vihtavuori 3N37	<<locked>>	61%	26353	71%	**57	100%
[Vihtavuori 3N38]*	<<locked>>	61%	18594	50%	**02	85%
[Vihtavuori N105]*	<<locked>>	61%	14721	40%	**20	83%
Vihtavuori N32C Tin Star	<<locked>>	60%	18507	50%	**99	100%
Vihtavuori N330	<<locked>>	61%	30632	83%	**44	100%
Vihtavuori N340	<<locked>>	61%	27354	74%	**17	100%
Vihtavuori N350	<<locked>>	61%	23772	64%	**94	99%

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