Load data for .38 Super Auto + .357 | 170gr | Speer SP MAG GD

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 170gr \| Speer SP MAG GD
Manufacturer SKU:	4230
Bullet Weight:	170gr \| 11.0g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.680" \| 17.3mm
Caliber:	.38 Super Auto load data
Case Length (l3):	0.890" \| 22.6mm
Cartridge Length (C.O.L.):	1.261" \| 32.0mm
Seated Depth:	0.309" \| 7.9mm
Shank Seated Depth:	0.309" \| 7.9mm
Case Capacity:	17.6 Grains of Water \| 1.14 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	33359 psi \| 2300 bar
LID:	LID_B6228_C583
Last updated:	2026-01-21

Load data for 90 loads in caliber .38 Super Auto with .357 | 170gr | Speer SP MAG GD bullet and 45 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".
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>>	97%	27398	82%	**33	94%
ADI AP 70N	<<locked>>	68%	29936	90%	**4	100%
Accurate No. 2	<<locked>>	75%	29341	88%	**4	100%
[Accurate No. 7]*	<<locked>>	81%	29747	89%	**09	86%
Accurate Solo 1250	<<locked>>	82%	29457	88%	**4	100%
Alliant BULLSEYE	<<locked>>	71%	29312	88%	**24	100%
Alliant POWER PISTOL	<<locked>>	83%	29631	89%	**99	94%
Alliant Sport Pistol	<<locked>>	67%	30008	90%	**33	100%
Alliant UNIQUE	<<locked>>	82%	29298	88%	**33	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	96%	28964	87%	**5	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	74%	29878	90%	**1	100%
Hodgdon HS-6	<<locked>>	68%	29994	90%	**56	98%
Hodgdon Longshot 👍	<<locked>>	65%	29443	88%	**47	99%
Hodgdon Universal	<<locked>>	76%	29936	90%	**4	100%
Hodgdon CFE Pistol	<<locked>>	78%	29718	89%	**8	100%
[Lovex D037.1]*	<<locked>>	81%	29747	89%	**09	86%
Lovex S011	<<locked>>	66%	29675	89%	**8	100%
Lovex S020	<<locked>>	75%	29762	89%	**04	100%
Maxam CSB 1	<<locked>>	85%	29762	89%	**4	100%
Maxam CSB 2	<<locked>>	83%	29921	90%	**8	100%
Maxam CSB 3	<<locked>>	79%	29254	88%	**8	100%
Ramshot Silhouette	<<locked>>	68%	29414	88%	**30	100%
Ramshot True Blue	<<locked>>	64%	29907	90%	**47	99%
ReloadSwiss RS 12	<<locked>>	72%	29602	89%	**1	100%
ReloadSwiss RS 20	<<locked>>	85%	29994	90%	**40	100%
[ReloadSwiss RS 24]*	<<locked>>	87%	29892	90%	**99	89%
Rottweil P 801	<<locked>>	66%	29530	89%	**2	100%
Rottweil P 806 👍	<<locked>>	95%	29660	89%	**52	99%
SNPE Vectan A0	<<locked>>	84%	29312	88%	**8	100%
SNPE Vectan BA 9	<<locked>>	75%	29138	87%	**8	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	91%	29849	89%	**40	99%
SNPE Vectan BA9 1/2	<<locked>>	77%	29080	87%	**4	100%
SNPE Vectan SP 2	<<locked>>	80%	29341	88%	**15	96%
[Shooters World Major Pistol]*	<<locked>>	81%	29747	89%	**09	86%
Somchem MP200	<<locked>>	76%	29414	88%	**24	100%
Somchem MS200	<<locked>>	80%	29704	89%	**07	100%
Somchem S221	<<locked>>	72%	29370	88%	**73	92%
Vihtavuori 3N37 👍	<<locked>>	84%	29443	88%	**60	99%
[Vihtavuori 3N38]*	<<locked>>	96%	27818	83%	**63	88%
[Vihtavuori N105]*	<<locked>>	96%	20784	62%	**01	87%
Vihtavuori N320	<<locked>>	74%	29544	89%	**2	100%
Vihtavuori N330	<<locked>>	77%	29588	89%	**4	100%
Vihtavuori N340	<<locked>>	81%	29863	90%	**10	100%
Vihtavuori N350 👍	<<locked>>	88%	29805	89%	**60	100%
Winchester 231	<<locked>>	64%	29675	89%	**8	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	84%	20102	60%	**2	89%
ADI AP 70N	<<locked>>	61%	24207	73%	**8	100%
Accurate No. 2	<<locked>>	68%	23989	72%	**8	100%
[Accurate No. 7]*	<<locked>>	72%	21669	65%	**4	80%
Accurate Solo 1250	<<locked>>	74%	24555	74%	**9	100%
Alliant BULLSEYE	<<locked>>	62%	22539	68%	**2	100%
[Alliant POWER PISTOL]*	<<locked>>	68%	19072	57%	**2	88%
Alliant Sport Pistol	<<locked>>	60%	24308	73%	**1	100%
Alliant UNIQUE	<<locked>>	70%	21466	64%	**8	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	93%	26919	81%	**8	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	69%	25918	78%	**2	100%
Hodgdon HS-6	<<locked>>	61%	22756	68%	**8	95%
Hodgdon Longshot	<<locked>>	61%	26092	78%	**04	98%
Hodgdon Universal	<<locked>>	68%	24207	73%	**8	100%
Hodgdon CFE Pistol	<<locked>>	70%	24410	73%	**8	100%
[Lovex D037.1]*	<<locked>>	72%	21669	65%	**4	80%
Lovex S011	<<locked>>	63%	27485	82%	**5	100%
Lovex S020	<<locked>>	66%	22814	68%	**5	100%
Maxam CSB 1	<<locked>>	78%	24990	75%	**9	100%
Maxam CSB 2	<<locked>>	74%	23743	71%	**2	100%
Maxam CSB 3	<<locked>>	76%	27412	82%	**8	100%
Ramshot Silhouette	<<locked>>	61%	23438	70%	**5	100%
Ramshot True Blue	<<locked>>	61%	26542	80%	**04	98%
ReloadSwiss RS 12	<<locked>>	66%	25454	76%	**8	100%
ReloadSwiss RS 20	<<locked>>	71%	20233	61%	**2	100%
[ReloadSwiss RS 24]*	<<locked>>	72%	18739	56%	**9	80%
Rottweil P 801	<<locked>>	63%	27238	82%	**9	100%
Rottweil P 806	<<locked>>	76%	15519	47%	**2	91%
SNPE Vectan A0	<<locked>>	76%	24091	72%	**5	100%
SNPE Vectan BA 9	<<locked>>	70%	25469	76%	**5	100%
SNPE Vectan BA7 1/2	<<locked>>	78%	21393	64%	**2	95%
SNPE Vectan BA9 1/2	<<locked>>	70%	24236	73%	**2	100%
[SNPE Vectan SP 2]*	<<locked>>	64%	17419	52%	**2	89%
[Shooters World Major Pistol]*	<<locked>>	72%	21669	65%	**4	80%
Somchem MP200	<<locked>>	65%	21741	65%	**5	100%
Somchem MS200	<<locked>>	71%	23351	70%	**8	100%
[Somchem S221]*	<<locked>>	61%	19725	59%	**5	85%
Vihtavuori 3N37	<<locked>>	71%	19870	60%	**5	96%
[Vihtavuori 3N38]*	<<locked>>	83%	18811	56%	**2	81%
[Vihtavuori N105]*	<<locked>>	88%	16679	50%	**9	83%
Vihtavuori N320	<<locked>>	71%	27383	82%	**2	100%
Vihtavuori N330	<<locked>>	69%	23453	70%	**5	100%
Vihtavuori N340	<<locked>>	71%	22321	67%	**2	100%
Vihtavuori N350	<<locked>>	74%	19769	59%	**9	96%
Winchester 231	<<locked>>	61%	26803	80%	**5	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