Load data for .44 Auto Mag. + .429 | 240gr | Speer Magnum JSP

Recommended Powder(s): Alliant POWER PISTOL

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.429 \| 240gr \| Speer Magnum JSP
Manufacturer SKU:	4457
Bullet Weight:	240gr \| 15.6g
Bullet Diameter:	0.429" \| 10.90mm
Bullet Length:	0.676" \| 17.2mm
Caliber:	.44 Auto Mag. load data
Case Length (l3):	1.298" \| 33.0mm
Cartridge Length (C.O.L.):	1.674" \| 42.5mm
Seated Depth:	0.300" \| 7.6mm
Shank Seated Depth:	0.300" \| 7.6mm
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_B6275_C710
Last updated:	2025-01-01

Load data for 92 loads in caliber .44 Auto Mag. with .429 | 240gr | Speer Magnum JSP bullet and 46 powders such as Alliant POWER PISTOL. 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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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.

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>>	84%	33243	90%	**89	100%
ADI AS 30	<<locked>>	66%	32808	89%	**76	100%
[Accurate 4100]*	<<locked>>	87%	33185	90%	**45	83%
Accurate No. 2	<<locked>>	63%	31618	86%	**78	100%
Accurate No. 7	<<locked>>	65%	32895	89%	**42	94%
[Accurate No. 9]*	<<locked>>	73%	32140	87%	**16	88%
Accurate Solo 1000	<<locked>>	66%	33141	90%	**06	100%
Accurate Solo 1250	<<locked>>	69%	32808	89%	**52	100%
Accurate TCM	<<locked>>	73%	32547	88%	**29	90%
[Alliant 2400]*	<<locked>>	82%	32387	88%	**42	86%
Alliant BLUE DOT	<<locked>>	84%	32619	88%	**19	93%
Alliant POWER PISTOL 👍	<<locked>>	68%	32996	89%	**22	99%
Alliant UNIQUE	<<locked>>	68%	33011	89%	**20	100%
Baschieri & Pellagri 100	<<locked>>	65%	31937	86%	**99	100%
Hodgdon Clays	<<locked>>	64%	33112	90%	**27	100%
[Hodgdon LilGun]*	<<locked>>	95%	32750	89%	**14	86%
Hodgdon Universal	<<locked>>	63%	33098	89%	**65	100%
Hodgdon TrailBoss	<<locked>>	96%	18855	51%	**6	100%
Lovex D037.1	<<locked>>	65%	32895	89%	**42	94%
[Lovex D037.2]*	<<locked>>	72%	32663	88%	**32	89%
Lovex S020	<<locked>>	63%	33025	89%	**88	100%
Maxam CSB 1	<<locked>>	71%	32721	88%	**52	100%
Maxam CSB 2	<<locked>>	67%	31894	86%	**35	100%
Maxam CSB 3	<<locked>>	67%	32721	88%	**29	100%
Maxam CSB 4	<<locked>>	65%	33141	90%	**15	100%
[Ramshot Enforcer]*	<<locked>>	83%	32590	88%	**55	87%
ReloadSwiss RS 14	<<locked>>	95%	17651	48%	**6	100%
ReloadSwiss RS 20	<<locked>>	68%	31894	86%	**01	100%
ReloadSwiss RS 24	<<locked>>	70%	32561	88%	**16	96%
Rottweil P 806	<<locked>>	74%	32692	88%	**22	100%
SNPE Vectan A0	<<locked>>	71%	32213	87%	**81	100%
SNPE Vectan BA 9	<<locked>>	64%	32416	88%	**55	100%
SNPE Vectan BA7 1/2	<<locked>>	76%	32561	88%	**43	100%
SNPE Vectan BA9 1/2	<<locked>>	65%	32024	87%	**48	100%
[Shooters World Heavy Pistol]*	<<locked>>	72%	32663	88%	**32	89%
Shooters World Major Pistol	<<locked>>	65%	32895	89%	**42	94%
Somchem MP200	<<locked>>	62%	31923	86%	**07	100%
Somchem MS200	<<locked>>	67%	32358	87%	**88	100%
Vihtavuori 3N37	<<locked>>	69%	32068	87%	**50	100%
Vihtavuori 3N38	<<locked>>	80%	32343	87%	**99	97%
Vihtavuori N105	<<locked>>	85%	31720	86%	**35	99%
Vihtavuori N320	<<locked>>	63%	33069	89%	**15	100%
Vihtavuori N32C Tin Star	<<locked>>	85%	32082	87%	**40	100%
Vihtavuori N330	<<locked>>	63%	31879	86%	**55	100%
Vihtavuori N340	<<locked>>	67%	31676	86%	**81	100%
Vihtavuori N350	<<locked>>	73%	33214	90%	**57	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	17985	49%	**14	93%
ADI AS 30	<<locked>>	61%	29283	79%	**33	100%
[Accurate 4100]*	<<locked>>	84%	30443	82%	**96	80%
Accurate No. 2	<<locked>>	61%	29892	81%	**61	100%
Accurate No. 7	<<locked>>	61%	27789	75%	**60	92%
[Accurate No. 9]*	<<locked>>	61%	21234	57%	**22	80%
Accurate Solo 1000	<<locked>>	61%	29805	81%	**63	100%
Accurate Solo 1250	<<locked>>	61%	26194	71%	**73	100%
[Accurate TCM]*	<<locked>>	61%	21495	58%	**25	82%
[Alliant 2400]*	<<locked>>	74%	24453	66%	**04	80%
[Alliant BLUE DOT]*	<<locked>>	61%	16433	44%	**01	80%
Alliant POWER PISTOL	<<locked>>	61%	26063	70%	**11	97%
Alliant UNIQUE	<<locked>>	61%	26861	73%	**38	100%
Baschieri & Pellagri 100	<<locked>>	61%	28718	78%	**56	100%
Hodgdon Clays	<<locked>>	61%	31154	84%	**07	100%
[Hodgdon LilGun]*	<<locked>>	88%	25686	69%	**83	80%
Hodgdon Universal	<<locked>>	61%	31299	85%	**45	100%
Hodgdon TrailBoss	<<locked>>	60%	9413	25%	**2	100%
Lovex D037.1	<<locked>>	61%	27789	75%	**60	92%
[Lovex D037.2]*	<<locked>>	61%	21654	59%	**32	81%
Lovex S020	<<locked>>	61%	31285	85%	**65	100%
Maxam CSB 1	<<locked>>	61%	24947	67%	**50	100%
Maxam CSB 2	<<locked>>	61%	27282	74%	**76	100%
Maxam CSB 3	<<locked>>	61%	27876	75%	**70	100%
Maxam CSB 4	<<locked>>	61%	29660	80%	**73	100%
[Ramshot Enforcer]*	<<locked>>	74%	23525	64%	**98	80%
ReloadSwiss RS 14	<<locked>>	61%	8963	24%	**9	100%
ReloadSwiss RS 20	<<locked>>	61%	25831	70%	**22	100%
ReloadSwiss RS 24	<<locked>>	61%	23975	65%	**71	92%
Rottweil P 806	<<locked>>	61%	20755	56%	**25	99%
SNPE Vectan A0	<<locked>>	61%	24903	67%	**76	100%
SNPE Vectan BA 9	<<locked>>	61%	29385	79%	**15	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	21393	58%	**63	99%
SNPE Vectan BA9 1/2	<<locked>>	61%	28950	78%	**09	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	21654	59%	**32	81%
Shooters World Major Pistol	<<locked>>	61%	27789	75%	**60	92%
Somchem MP200	<<locked>>	61%	30429	82%	**84	100%
Somchem MS200	<<locked>>	61%	27717	75%	**22	100%
Vihtavuori 3N37	<<locked>>	61%	25077	68%	**48	100%
[Vihtavuori 3N38]*	<<locked>>	61%	17680	48%	**27	87%
[Vihtavuori N105]*	<<locked>>	61%	14098	38%	**8	87%
Vihtavuori N320	<<locked>>	61%	31183	84%	**96	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	18623	50%	**3	100%
Vihtavuori N330	<<locked>>	61%	30153	82%	**29	100%
Vihtavuori N340	<<locked>>	61%	26992	73%	**22	100%
Vihtavuori N350	<<locked>>	61%	23337	63%	**12	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.