Load data for .357 Maximum + .358 | 250gr | Hornady InterLock SP-RP

Recommended Powder(s): ADI AP 100, Alliant POWER PISTOL, Rottweil P 806, Somchem S221, Vihtavuori N105

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.358 \| 250gr \| Hornady InterLock SP-RP
Manufacturer SKU:	3520
Bullet Weight:	250gr \| 16.2g
Bullet Diameter:	0.358" \| 9.09mm
Bullet Length:	1.302" \| 33.1mm
Caliber:	.357 Maximum load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	1.960" \| 49.8mm
Seated Depth:	0.942" \| 23.9mm
Shank Seated Depth:	0.942" \| 23.9mm
Case Capacity:	33.6 Grains of Water \| 2.18 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B2799_C515
Last updated:	Mon Jul 14 2025 12:13:17 GMT+0000 (Coordinated Universal Time)

Load data for 112 loads in caliber .357 Maximum with .358 | 250gr | Hornady InterLock SP-RP bullet and 56 powders such as ADI AP 100, Alliant POWER PISTOL, Rottweil P 806, Somchem S221, Vihtavuori N105. 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%	37550	84%	**9	100%
ADI AP 70N	<<locked>>	66%	38334	85%	**7	100%
ADI APS 350	<<locked>>	76%	39711	88%	**2	100%
ADI APS 450	<<locked>>	73%	35926	80%	**2	100%
ADI AS 30	<<locked>>	74%	36390	81%	**5	100%
ADI AS 50N	<<locked>>	74%	40277	90%	**1	100%
[Accurate 4100]*	<<locked>>	94%	32866	73%	**8	83%
Accurate No. 2	<<locked>>	70%	35099	78%	**3	100%
Accurate No. 7	<<locked>>	74%	36303	81%	**8	96%
Accurate No. 9	<<locked>>	83%	37217	83%	**8	91%
Accurate Solo 1000	<<locked>>	75%	37913	84%	**4	100%
Accurate Solo 1250	<<locked>>	78%	36666	82%	**7	100%
Accurate TCM	<<locked>>	84%	37927	84%	**1	93%
Alliant 2400	<<locked>>	97%	39769	88%	**01	90%
Alliant BLUE DOT	<<locked>>	96%	36477	81%	**1	95%
Alliant BULLSEYE	<<locked>>	70%	38522	86%	**9	100%
Alliant POWER PISTOL 👍	<<locked>>	79%	37463	83%	**1	100%
Alliant UNIQUE	<<locked>>	78%	37014	82%	**0	100%
Baschieri & Pellagri 100	<<locked>>	78%	40350	90%	**4	100%
Hodgdon HS-6	<<locked>>	65%	37246	83%	**6	100%
Hodgdon Longshot	<<locked>>	64%	40001	89%	**9	100%
Hodgdon Universal	<<locked>>	73%	38334	85%	**7	100%
Hodgdon CFE Pistol	<<locked>>	75%	37797	84%	**0	100%
Lovex D037.1	<<locked>>	74%	36303	81%	**8	96%
Lovex D037.2	<<locked>>	84%	39218	87%	**8	92%
Lovex S011	<<locked>>	66%	39363	88%	**4	100%
Lovex S020	<<locked>>	72%	38421	85%	**0	100%
Maxam CSB 1	<<locked>>	85%	39610	88%	**3	100%
Maxam CSB 2	<<locked>>	77%	36927	82%	**4	100%
Maxam CSB 3	<<locked>>	78%	38203	85%	**7	100%
Maxam CSB 4	<<locked>>	73%	36419	81%	**1	100%
Maxam CSB 5	<<locked>>	73%	39871	89%	**1	100%
[Ramshot Enforcer]*	<<locked>>	95%	36448	81%	**4	89%
Ramshot Silhouette	<<locked>>	66%	37898	84%	**3	100%
ReloadSwiss RS 12	<<locked>>	67%	37608	84%	**7	100%
ReloadSwiss RS 20	<<locked>>	83%	39784	88%	**6	100%
ReloadSwiss RS 24	<<locked>>	81%	37318	83%	**1	98%
Rottweil P 806 👍	<<locked>>	85%	37115	83%	**1	100%
SNPE Vectan A0	<<locked>>	84%	38725	86%	**3	100%
SNPE Vectan BA 9	<<locked>>	75%	37637	84%	**7	100%
SNPE Vectan BA10	<<locked>>	68%	35897	80%	**2	100%
SNPE Vectan BA7 1/2	<<locked>>	90%	40234	89%	**2	100%
SNPE Vectan BA9 1/2	<<locked>>	78%	39842	89%	**3	100%
Shooters World Heavy Pistol	<<locked>>	84%	39218	87%	**8	92%
Shooters World Major Pistol	<<locked>>	74%	36303	81%	**8	96%
Somchem MP200	<<locked>>	75%	40118	89%	**9	100%
Somchem MS200	<<locked>>	77%	37289	83%	**0	100%
Somchem S221 👍	<<locked>>	68%	38029	85%	**5	99%
Vihtavuori 3N37	<<locked>>	78%	36042	80%	**6	100%
Vihtavuori 3N38	<<locked>>	91%	36854	82%	**8	98%
Vihtavuori N105 👍	<<locked>>	93%	31024	69%	**5	99%
Vihtavuori N320	<<locked>>	74%	39175	87%	**4	100%
Vihtavuori N32C Tin Star	<<locked>>	90%	32967	73%	**2	100%
Vihtavuori N330	<<locked>>	72%	35636	79%	**7	100%
Vihtavuori N340	<<locked>>	76%	36013	80%	**3	100%
Vihtavuori N350	<<locked>>	86%	40234	89%	**2	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	65%	17825	40%	**6	94%
ADI AP 70N	<<locked>>	61%	33504	75%	**7	100%
ADI APS 350	<<locked>>	69%	34229	76%	**2	100%
ADI APS 450	<<locked>>	66%	31111	69%	**2	100%
ADI AS 30	<<locked>>	60%	26585	59%	**6	100%
ADI AS 50N	<<locked>>	62%	30081	67%	**5	100%
[Accurate 4100]*	<<locked>>	91%	29559	66%	**2	81%
Accurate No. 2	<<locked>>	60%	25367	56%	**1	100%
Accurate No. 7	<<locked>>	61%	23250	52%	**4	90%
[Accurate No. 9]*	<<locked>>	64%	19667	44%	**5	80%
Accurate Solo 1000	<<locked>>	62%	28050	62%	**9	100%
Accurate Solo 1250	<<locked>>	61%	23453	52%	**6	100%
[Accurate TCM]*	<<locked>>	64%	20146	45%	**8	82%
[Alliant 2400]*	<<locked>>	78%	23714	53%	**7	81%
[Alliant BLUE DOT]*	<<locked>>	62%	15200	34%	**9	80%
Alliant BULLSEYE	<<locked>>	60%	28805	64%	**1	100%
Alliant POWER PISTOL	<<locked>>	61%	22960	51%	**4	97%
Alliant UNIQUE	<<locked>>	62%	24627	55%	**1	100%
Baschieri & Pellagri 100	<<locked>>	61%	25933	58%	**6	100%
Hodgdon HS-6	<<locked>>	61%	33446	74%	**6	100%
Hodgdon Longshot	<<locked>>	60%	35665	79%	**6	100%
Hodgdon Universal	<<locked>>	62%	29080	65%	**1	100%
Hodgdon CFE Pistol	<<locked>>	60%	25570	57%	**2	100%
Lovex D037.1	<<locked>>	61%	23250	52%	**4	90%
[Lovex D037.2]*	<<locked>>	65%	20827	46%	**4	81%
Lovex S011	<<locked>>	61%	33953	76%	**8	100%
Lovex S020	<<locked>>	62%	28892	64%	**8	100%
Maxam CSB 1	<<locked>>	61%	22655	50%	**2	100%
Maxam CSB 2	<<locked>>	60%	23946	53%	**6	100%
Maxam CSB 3	<<locked>>	60%	24642	55%	**9	100%
Maxam CSB 4	<<locked>>	61%	27006	60%	**9	100%
Maxam CSB 5	<<locked>>	61%	29414	65%	**6	100%
[Ramshot Enforcer]*	<<locked>>	78%	21799	48%	**7	80%
Ramshot Silhouette	<<locked>>	62%	33663	75%	**0	100%
ReloadSwiss RS 12	<<locked>>	62%	32750	73%	**1	100%
ReloadSwiss RS 20	<<locked>>	62%	22858	51%	**5	100%
ReloadSwiss RS 24	<<locked>>	62%	20943	47%	**8	90%
Rottweil P 806	<<locked>>	61%	17695	39%	**8	98%
SNPE Vectan A0	<<locked>>	62%	22800	51%	**5	100%
SNPE Vectan BA 9	<<locked>>	60%	25295	56%	**9	100%
SNPE Vectan BA10	<<locked>>	62%	31096	69%	**2	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	19392	43%	**9	99%
SNPE Vectan BA9 1/2	<<locked>>	62%	26745	59%	**2	100%
[Shooters World Heavy Pistol]*	<<locked>>	65%	20827	46%	**4	81%
Shooters World Major Pistol	<<locked>>	61%	23250	52%	**4	90%
Somchem MP200	<<locked>>	61%	27514	61%	**8	100%
Somchem MS200	<<locked>>	61%	24598	55%	**2	100%
Somchem S221	<<locked>>	61%	30560	68%	**6	98%
Vihtavuori 3N37	<<locked>>	61%	21799	48%	**5	100%
[Vihtavuori 3N38]*	<<locked>>	62%	16143	36%	**6	87%
[Vihtavuori N105]*	<<locked>>	62%	12908	29%	**6	87%
Vihtavuori N320	<<locked>>	62%	28979	64%	**9	100%
Vihtavuori N32C Tin Star	<<locked>>	83%	28660	64%	**9	100%
Vihtavuori N330	<<locked>>	61%	26513	59%	**5	100%
Vihtavuori N340	<<locked>>	60%	23366	52%	**2	100%
Vihtavuori N350	<<locked>>	62%	20755	46%	**8	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