Load data for .357 Maximum + .355 | 125gr | Sierra FMJ RN SportsMaster

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

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.355 \| 125gr \| Sierra FMJ RN SportsMaster
Manufacturer SKU:	8120
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.355" \| 9.02mm
Bullet Length:	0.581" \| 14.8mm
Caliber:	.357 Maximum load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	1.960" \| 49.8mm
Seated Depth:	0.221" \| 5.6mm
Shank Seated Depth:	0.221" \| 5.6mm
Case Capacity:	33.6 Grains of Water \| 2.18 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B5938_C515
Last updated:	2025-01-01

Load data for 106 loads in caliber .357 Maximum with .355 | 125gr | Sierra FMJ RN SportsMaster bullet and 53 powders such as Alliant POWER PISTOL, 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>>	87%	39436	88%	**60	100%
ADI APS 350	<<locked>>	71%	39059	87%	**48	100%
ADI APS 450	<<locked>>	72%	39030	87%	**75	100%
ADI AS 30	<<locked>>	73%	39987	89%	**27	100%
ADI AS 50N	<<locked>>	68%	39233	87%	**67	100%
[Accurate 4100]*	<<locked>>	88%	39450	88%	**86	83%
Accurate No. 2	<<locked>>	68%	39769	88%	**58	100%
Accurate No. 7	<<locked>>	67%	39726	88%	**96	95%
[Accurate No. 9]*	<<locked>>	75%	38812	86%	**73	89%
Accurate Solo 1000	<<locked>>	72%	40422	90%	**70	100%
Accurate Solo 1250	<<locked>>	75%	40379	90%	**12	100%
Accurate TCM	<<locked>>	75%	39160	87%	**99	91%
[Alliant 2400]*	<<locked>>	85%	39508	88%	**19	87%
Alliant BLUE DOT	<<locked>>	87%	39015	87%	**80	93%
Alliant BULLSEYE	<<locked>>	65%	39450	88%	**78	100%
Alliant POWER PISTOL 👍	<<locked>>	71%	39204	87%	**03	100%
Alliant UNIQUE	<<locked>>	72%	38711	86%	**85	100%
Baschieri & Pellagri 100	<<locked>>	71%	39450	88%	**50	100%
Hodgdon Clays	<<locked>>	71%	40103	89%	**75	100%
[Hodgdon LilGun]*	<<locked>>	95%	39015	87%	**52	86%
Hodgdon Universal	<<locked>>	67%	38580	86%	**03	100%
Hodgdon TrailBoss	<<locked>>	96%	19914	44%	**09	100%
Lovex D037.1	<<locked>>	67%	39726	88%	**96	95%
Lovex D037.2	<<locked>>	75%	39856	89%	**09	90%
Lovex S020	<<locked>>	66%	39117	87%	**42	100%
Maxam CSB 1	<<locked>>	77%	40103	89%	**12	100%
Maxam CSB 2	<<locked>>	72%	39697	88%	**96	100%
Maxam CSB 3	<<locked>>	73%	40205	89%	**90	100%
Maxam CSB 4	<<locked>>	70%	38580	86%	**53	100%
Maxam CSB 5	<<locked>>	68%	39871	89%	**14	100%
[Ramshot Enforcer]*	<<locked>>	85%	38899	87%	**16	88%
ReloadSwiss RS 12	<<locked>>	63%	39987	89%	**86	100%
ReloadSwiss RS 14	<<locked>>	95%	18739	42%	**22	100%
ReloadSwiss RS 20	<<locked>>	74%	39900	89%	**68	100%
ReloadSwiss RS 24	<<locked>>	74%	40437	90%	**22	97%
Rottweil P 806 👍	<<locked>>	76%	40001	89%	**70	100%
SNPE Vectan A0	<<locked>>	76%	39465	88%	**49	100%
SNPE Vectan BA 9	<<locked>>	70%	39465	88%	**16	100%
SNPE Vectan BA10	<<locked>>	67%	39015	87%	**75	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	80%	39856	89%	**08	100%
SNPE Vectan BA9 1/2	<<locked>>	70%	39334	87%	**09	100%
Shooters World Heavy Pistol	<<locked>>	75%	39856	89%	**09	90%
Shooters World Major Pistol	<<locked>>	67%	39726	88%	**96	95%
Somchem MP200	<<locked>>	67%	39305	87%	**72	100%
Somchem MS200	<<locked>>	72%	39566	88%	**52	100%
Vihtavuori 3N37	<<locked>>	73%	39871	89%	**24	100%
Vihtavuori 3N38	<<locked>>	84%	40422	90%	**86	97%
Vihtavuori N105	<<locked>>	88%	39653	88%	**09	99%
Vihtavuori N320	<<locked>>	67%	38754	86%	**50	100%
Vihtavuori N32C Tin Star	<<locked>>	92%	38783	86%	**75	100%
Vihtavuori N330	<<locked>>	69%	39755	88%	**16	100%
Vihtavuori N340	<<locked>>	72%	39407	88%	**62	100%
Vihtavuori N350	<<locked>>	76%	39494	88%	**27	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	19406	43%	**50	92%
ADI APS 350	<<locked>>	61%	31459	70%	**47	100%
ADI APS 450	<<locked>>	61%	29965	67%	**50	100%
ADI AS 30	<<locked>>	61%	30487	68%	**99	100%
ADI AS 50N	<<locked>>	61%	33489	74%	**85	100%
[Accurate 4100]*	<<locked>>	84%	34867	78%	**11	80%
Accurate No. 2	<<locked>>	61%	31865	71%	**53	100%
Accurate No. 7	<<locked>>	61%	30922	69%	**49	91%
[Accurate No. 9]*	<<locked>>	63%	25918	58%	**34	81%
Accurate Solo 1000	<<locked>>	61%	31154	69%	**42	100%
Accurate Solo 1250	<<locked>>	61%	27760	62%	**39	100%
[Accurate TCM]*	<<locked>>	61%	23873	53%	**81	81%
[Alliant 2400]*	<<locked>>	76%	29878	66%	**39	81%
[Alliant BLUE DOT]*	<<locked>>	64%	19711	44%	**80	80%
Alliant BULLSEYE	<<locked>>	61%	35650	79%	**29	100%
Alliant POWER PISTOL	<<locked>>	61%	28268	63%	**90	96%
Alliant UNIQUE	<<locked>>	61%	28674	64%	**21	100%
Baschieri & Pellagri 100	<<locked>>	61%	30226	67%	**25	100%
Hodgdon Clays	<<locked>>	61%	32111	71%	**63	100%
[Hodgdon LilGun]*	<<locked>>	88%	30226	67%	**08	81%
Hodgdon Universal	<<locked>>	61%	33141	74%	**34	100%
Hodgdon TrailBoss	<<locked>>	60%	9921	22%	**3	100%
Lovex D037.1	<<locked>>	61%	30922	69%	**49	91%
[Lovex D037.2]*	<<locked>>	62%	25266	56%	**21	80%
Lovex S020	<<locked>>	61%	33402	74%	**53	100%
Maxam CSB 1	<<locked>>	61%	26440	59%	**16	100%
Maxam CSB 2	<<locked>>	61%	29080	65%	**42	100%
Maxam CSB 3	<<locked>>	61%	29370	65%	**39	100%
Maxam CSB 4	<<locked>>	61%	31111	69%	**42	100%
Maxam CSB 5	<<locked>>	61%	34055	76%	**42	100%
[Ramshot Enforcer]*	<<locked>>	75%	28123	63%	**09	81%
ReloadSwiss RS 12	<<locked>>	61%	37956	84%	**57	100%
ReloadSwiss RS 14	<<locked>>	61%	9485	21%	**6	100%
ReloadSwiss RS 20	<<locked>>	61%	27818	62%	**91	100%
ReloadSwiss RS 24	<<locked>>	61%	26266	58%	**50	90%
Rottweil P 806	<<locked>>	61%	23409	52%	**94	98%
SNPE Vectan A0	<<locked>>	61%	26498	59%	**52	100%
SNPE Vectan BA 9	<<locked>>	61%	31111	69%	**01	100%
SNPE Vectan BA10	<<locked>>	61%	33446	74%	**06	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	23090	51%	**19	98%
SNPE Vectan BA9 1/2	<<locked>>	61%	30632	68%	**91	100%
[Shooters World Heavy Pistol]*	<<locked>>	62%	25266	56%	**21	80%
Shooters World Major Pistol	<<locked>>	61%	30922	69%	**49	91%
Somchem MP200	<<locked>>	61%	32503	72%	**70	100%
Somchem MS200	<<locked>>	61%	29472	66%	**04	100%
Vihtavuori 3N37	<<locked>>	61%	27282	61%	**17	100%
[Vihtavuori 3N38]*	<<locked>>	61%	19435	43%	**76	85%
[Vihtavuori N105]*	<<locked>>	61%	15766	35%	**11	85%
Vihtavuori N320	<<locked>>	61%	32880	73%	**71	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	19653	44%	**83	100%
Vihtavuori N330	<<locked>>	61%	32213	72%	**14	100%
Vihtavuori N340	<<locked>>	61%	28848	64%	**04	100%
Vihtavuori N350	<<locked>>	61%	25266	56%	**75	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