Load data for .44 Auto Mag. + .427 | 200gr | Winchester SPRN 44-40

Recommended Powder(s): Alliant UNIQUE, Ramshot True Blue, ReloadSwiss RS 20, Somchem MP200, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.427 \| 200gr \| Winchester SPRN 44-40
Bullet Weight:	200gr \| 13.0g
Bullet Diameter:	0.427" \| 10.85mm
Bullet Length:	1.000" \| 25.4mm
Caliber:	.44 Auto Mag. load data
Case Length (l3):	1.298" \| 33.0mm
Cartridge Length (C.O.L.):	1.674" \| 42.5mm
Seated Depth:	0.624" \| 15.8mm
Shank Seated Depth:	0.624" \| 15.8mm
Case Capacity:	39.0 Grains of Water \| 2.53 cm³
Primer Size:	Large Pistol Magnum (LPM)
Max. allowed Pressure:	36985 psi \| 2550 bar
LID:	LID_B6657_C710
Last updated:	2025-01-01

Load data for 114 loads in caliber .44 Auto Mag. with .427 | 200gr | Winchester SPRN 44-40 bullet and 57 powders such as Alliant UNIQUE, Ramshot True Blue, ReloadSwiss RS 20, Somchem MP200, 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>>	96%	26527	72%	**71	91%
ADI AP 70N	<<locked>>	70%	31067	84%	**71	100%
ADI APS 350	<<locked>>	74%	32503	88%	**01	100%
ADI APS 450	<<locked>>	76%	31981	86%	**33	100%
ADI AS 30	<<locked>>	81%	33054	89%	**89	100%
ADI AS 50N	<<locked>>	75%	31140	84%	**12	100%
Accurate No. 2	<<locked>>	77%	30792	83%	**65	100%
Accurate No. 5	<<locked>>	65%	32227	87%	**57	96%
[Accurate No. 7]*	<<locked>>	84%	32648	88%	**06	85%
Accurate Solo 1000	<<locked>>	79%	32358	87%	**06	100%
Accurate Solo 1250	<<locked>>	85%	31865	86%	**61	100%
Alliant BULLSEYE	<<locked>>	74%	31183	84%	**11	100%
Alliant POWER PISTOL	<<locked>>	87%	33040	89%	**09	94%
Alliant UNIQUE 👍	<<locked>>	87%	32605	88%	**37	100%
Baschieri & Pellagri 100	<<locked>>	78%	30414	82%	**93	100%
Hodgdon Clays	<<locked>>	74%	32895	89%	**20	100%
Hodgdon HS-6	<<locked>>	71%	32401	88%	**50	98%
Hodgdon Longshot	<<locked>>	67%	31227	84%	**27	98%
Hodgdon Universal	<<locked>>	78%	31067	84%	**71	100%
Hodgdon TrailBoss	<<locked>>	97%	12270	33%	**7	100%
Lovex D036	<<locked>>	65%	32184	87%	**63	96%
[Lovex D037.1]*	<<locked>>	84%	32648	88%	**06	85%
Lovex S011	<<locked>>	67%	31024	84%	**15	100%
Lovex S020	<<locked>>	79%	32996	89%	**04	100%
Maxam CSB 1	<<locked>>	89%	32590	88%	**61	100%
Maxam CSB 2	<<locked>>	85%	31343	85%	**68	100%
Maxam CSB 3	<<locked>>	83%	32300	87%	**38	100%
Maxam CSB 4	<<locked>>	79%	32024	87%	**12	100%
Maxam CSB 5	<<locked>>	73%	31038	84%	**56	100%
Ramshot Silhouette	<<locked>>	70%	31357	85%	**17	100%
Ramshot True Blue 👍	<<locked>>	67%	32851	89%	**47	99%
ReloadSwiss RS 12	<<locked>>	73%	30922	84%	**45	100%
ReloadSwiss RS 14	<<locked>>	92%	10283	28%	**1	100%
ReloadSwiss RS 20 👍	<<locked>>	88%	31589	85%	**30	100%
[ReloadSwiss RS 24]*	<<locked>>	91%	33156	90%	**02	88%
Rottweil P 801	<<locked>>	70%	32837	89%	**29	100%
Rottweil P 806	<<locked>>	96%	29921	81%	**22	98%
SNPE Vectan A0	<<locked>>	89%	32460	88%	**88	100%
SNPE Vectan BA 9	<<locked>>	79%	31908	86%	**55	100%
SNPE Vectan BA10	<<locked>>	69%	30458	82%	**17	100%
SNPE Vectan BA7 1/2	<<locked>>	94%	32053	87%	**27	98%
SNPE Vectan BA9 1/2	<<locked>>	80%	31560	85%	**61	100%
Shooters World Auto Pistol	<<locked>>	65%	32184	87%	**63	96%
[Shooters World Major Pistol]*	<<locked>>	84%	32648	88%	**06	85%
Somchem MP200 👍	<<locked>>	80%	33069	89%	**30	100%
Somchem MS200	<<locked>>	82%	31517	85%	**88	100%
Somchem S221	<<locked>>	75%	32489	88%	**73	91%
Vihtavuori 3N37	<<locked>>	87%	31560	85%	**47	99%
[Vihtavuori 3N38]*	<<locked>>	96%	27470	74%	**11	86%
[Vihtavuori N105]*	<<locked>>	95%	19972	54%	**22	83%
Vihtavuori N310	<<locked>>	65%	33199	90%	**50	100%
Vihtavuori N320	<<locked>>	78%	32401	88%	**29	100%
Vihtavuori N32C Tin Star	<<locked>>	94%	25338	69%	**4	100%
Vihtavuori N330	<<locked>>	80%	30980	84%	**75	100%
Vihtavuori N340	<<locked>>	83%	30806	83%	**84	100%
Vihtavuori N350 👍	<<locked>>	92%	33141	90%	**63	99%
Winchester 231	<<locked>>	66%	30937	84%	**35	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	72%	14663	40%	**2	80%
ADI AP 70N	<<locked>>	61%	24482	66%	**76	100%
ADI APS 350	<<locked>>	62%	24004	65%	**2	100%
ADI APS 450	<<locked>>	60%	21944	59%	**9	100%
ADI AS 30	<<locked>>	61%	20595	56%	**8	100%
ADI AS 50N	<<locked>>	61%	21814	59%	**4	100%
Accurate No. 2	<<locked>>	61%	19087	52%	**4	97%
Accurate No. 5	<<locked>>	61%	27949	76%	**98	94%
[Accurate No. 7]*	<<locked>>	78%	26600	72%	**17	81%
Accurate Solo 1000	<<locked>>	61%	20436	55%	**8	100%
Accurate Solo 1250	<<locked>>	61%	16781	45%	**5	100%
Alliant BULLSEYE	<<locked>>	61%	22089	60%	**70	100%
[Alliant POWER PISTOL]*	<<locked>>	61%	15650	42%	**1	81%
Alliant UNIQUE	<<locked>>	62%	16752	45%	**4	97%
Baschieri & Pellagri 100	<<locked>>	61%	19072	52%	**8	100%
Hodgdon Clays	<<locked>>	62%	24279	66%	**9	100%
Hodgdon HS-6	<<locked>>	61%	22843	62%	**02	93%
Hodgdon Longshot	<<locked>>	61%	25266	68%	**45	97%
Hodgdon Universal	<<locked>>	62%	20407	55%	**10	100%
Hodgdon TrailBoss	<<locked>>	72%	7890	21%	**3	100%
Lovex D036	<<locked>>	61%	27905	75%	**98	94%
[Lovex D037.1]*	<<locked>>	78%	26600	72%	**17	81%
Lovex S011	<<locked>>	61%	26078	71%	**56	100%
Lovex S020	<<locked>>	61%	19392	52%	**07	100%
Maxam CSB 1	<<locked>>	62%	16041	43%	**5	100%
Maxam CSB 2	<<locked>>	62%	16636	45%	**8	100%
Maxam CSB 3	<<locked>>	62%	18695	51%	**8	100%
Maxam CSB 4	<<locked>>	61%	20001	54%	**5	100%
Maxam CSB 5	<<locked>>	62%	23322	63%	**1	100%
Ramshot Silhouette	<<locked>>	61%	23163	63%	**93	99%
Ramshot True Blue	<<locked>>	61%	26861	73%	**61	97%
ReloadSwiss RS 12	<<locked>>	61%	21654	59%	**24	100%
ReloadSwiss RS 14	<<locked>>	74%	7527	20%	**3	98%
ReloadSwiss RS 20	<<locked>>	61%	14431	39%	**5	98%
[ReloadSwiss RS 24]*	<<locked>>	77%	22234	60%	**22	81%
Rottweil P 801	<<locked>>	61%	25353	69%	**43	100%
[Rottweil P 806]*	<<locked>>	65%	10762	29%	**9	81%
SNPE Vectan A0	<<locked>>	60%	15548	42%	**9	96%
SNPE Vectan BA 9	<<locked>>	62%	19595	53%	**8	100%
SNPE Vectan BA10	<<locked>>	62%	25425	69%	**5	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	13184	36%	**9	85%
SNPE Vectan BA9 1/2	<<locked>>	61%	18884	51%	**8	100%
Shooters World Auto Pistol	<<locked>>	61%	27905	75%	**98	94%
[Shooters World Major Pistol]*	<<locked>>	78%	26600	72%	**17	81%
Somchem MP200	<<locked>>	61%	19116	52%	**10	98%
Somchem MS200	<<locked>>	61%	17608	48%	**5	98%
[Somchem S221]*	<<locked>>	61%	20378	55%	**70	83%
[Vihtavuori 3N37]*	<<locked>>	61%	14301	39%	**2	89%
[Vihtavuori 3N38]*	<<locked>>	86%	20697	56%	**89	80%
[Vihtavuori N105]*	<<locked>>	92%	18463	50%	**83	81%
Vihtavuori N310	<<locked>>	61%	29907	81%	**17	100%
Vihtavuori N320	<<locked>>	61%	19682	53%	**8	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	11763	32%	**8	100%
Vihtavuori N330	<<locked>>	61%	17680	48%	**1	100%
Vihtavuori N340	<<locked>>	61%	16752	45%	**5	98%
[Vihtavuori N350]*	<<locked>>	61%	13402	36%	**6	88%
Winchester 231	<<locked>>	60%	26281	71%	**79	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