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

Buy an Access License and unlock all Load Data >>

You need to be a member to bookmark a load !

Bookmark this load

>> My bookmarks

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

.44 Rem. Mag. + .429 | 240gr | Speer Magnum JSP

Load Specifications

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 Rem. Mag. load data
Case Length (l3):	1.275" \| 32.4mm
Cartridge Length (C.O.L.):	1.586" \| 40.3mm
Seated Depth:	0.365" \| 9.3mm
Shank Seated Depth:	0.365" \| 9.3mm
Case Capacity:	39.5 Grains of Water \| 2.56 cm³
Primer Size:	Large Pistol Magnum (LPM)
Max. allowed Pressure:	40611 psi \| 2800 bar
LID:	LID_B6275_C714
Last updated:	2025-02-02

>> Use the Personalized Load Calculator further below to adjust input parameters.

Load data for 114 loads in caliber .44 Rem. Mag. with .429 | 240gr | Speer Magnum JSP bullet and 57 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".

Go to the bottom of the "My Account " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.
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>>	93%	39320	97%	**55	100%
ADI AP 70N	<<locked>>	65%	39711	98%	**27	100%
ADI AS 30	<<locked>>	76%	39740	98%	**38	100%
ADI AS 50N	<<locked>>	70%	38783	96%	**71	100%
[Accurate 4100]*	<<locked>>	95%	40437	100%	**21	85%
Accurate No. 2	<<locked>>	72%	40480	100%	**63	100%
Accurate No. 7	<<locked>>	72%	39276	97%	**11	96%
Accurate No. 9	<<locked>>	80%	39233	97%	**04	91%
Accurate Solo 1000	<<locked>>	75%	40176	99%	**71	100%
Accurate Solo 1250	<<locked>>	78%	39871	98%	**17	100%
Accurate TCM	<<locked>>	80%	38943	96%	**98	92%
[Alliant 2400]*	<<locked>>	91%	39537	97%	**27	89%
Alliant BULLSEYE	<<locked>>	68%	39726	98%	**86	100%
Alliant POWER PISTOL 👍	<<locked>>	76%	39059	96%	**88	100%
Alliant UNIQUE	<<locked>>	78%	40596	100%	**99	100%
Baschieri & Pellagri 100	<<locked>>	74%	39001	96%	**58	100%
Hodgdon Clays	<<locked>>	72%	39117	96%	**79	100%
Hodgdon HS-6	<<locked>>	63%	39943	98%	**29	100%
[Hodgdon LilGun]*	<<locked>>	97%	31488	78%	**78	84%
Hodgdon Universal	<<locked>>	71%	38885	96%	**17	100%
Hodgdon TrailBoss	<<locked>>	95%	17912	44%	**3	100%
Lovex D037.1	<<locked>>	72%	39276	97%	**11	96%
Lovex D037.2	<<locked>>	80%	40074	99%	**14	92%
Lovex S011	<<locked>>	63%	38682	95%	**81	100%
Lovex S020	<<locked>>	70%	39450	97%	**40	100%
Maxam CSB 1	<<locked>>	81%	39465	97%	**07	100%
Maxam CSB 2	<<locked>>	76%	38783	95%	**98	100%
Maxam CSB 3	<<locked>>	77%	39566	97%	**91	100%
Maxam CSB 4	<<locked>>	75%	40132	99%	**75	100%
Maxam CSB 5	<<locked>>	71%	39711	98%	**25	100%
Ramshot Enforcer	<<locked>>	92%	40364	99%	**53	90%
Ramshot Silhouette	<<locked>>	64%	39610	98%	**86	100%
ReloadSwiss RS 12	<<locked>>	67%	40016	99%	**98	100%
ReloadSwiss RS 14	<<locked>>	95%	16737	41%	**3	100%
ReloadSwiss RS 20	<<locked>>	78%	39581	97%	**73	100%
ReloadSwiss RS 24	<<locked>>	78%	39450	97%	**94	98%
Rottweil P 801	<<locked>>	63%	39465	97%	**65	100%
Rottweil P 806 👍	<<locked>>	82%	40451	100%	**07	100%
SNPE Vectan A0	<<locked>>	81%	39755	98%	**50	100%
SNPE Vectan BA 9	<<locked>>	74%	40001	99%	**20	100%
SNPE Vectan BA10	<<locked>>	70%	39363	97%	**02	100%
SNPE Vectan BA7 1/2	<<locked>>	85%	40118	99%	**19	100%
SNPE Vectan BA9 1/2	<<locked>>	73%	38769	95%	**14	100%
Shooters World Heavy Pistol	<<locked>>	80%	40074	99%	**14	92%
Shooters World Major Pistol	<<locked>>	72%	39276	97%	**11	96%
Somchem MP200	<<locked>>	71%	39378	97%	**80	100%
Somchem MS200	<<locked>>	76%	39929	98%	**60	100%
Somchem S221 👍	<<locked>>	66%	39726	98%	**75	99%
Vihtavuori 3N37	<<locked>>	78%	39784	98%	**25	100%
Vihtavuori 3N38	<<locked>>	89%	40118	99%	**91	98%
Vihtavuori N105 👍	<<locked>>	96%	40074	99%	**34	100%
Vihtavuori N320	<<locked>>	72%	40350	99%	**81	100%
Vihtavuori N32C Tin Star	<<locked>>	95%	37797	93%	**86	100%
Vihtavuori N330	<<locked>>	73%	40161	99%	**27	100%
Vihtavuori N340	<<locked>>	76%	39827	98%	**60	100%
Vihtavuori N350	<<locked>>	82%	40553	100%	**32	100%
Winchester 231	<<locked>>	63%	40335	99%	**11	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	16984	42%	**1	92%
ADI AP 70N	<<locked>>	61%	35911	88%	**88	100%
ADI AS 30	<<locked>>	61%	28108	69%	**07	100%
ADI AS 50N	<<locked>>	61%	30937	76%	**83	100%
[Accurate 4100]*	<<locked>>	86%	30240	74%	**89	80%
Accurate No. 2	<<locked>>	61%	28210	69%	**25	100%
Accurate No. 7	<<locked>>	61%	26310	65%	**17	90%
[Accurate No. 9]*	<<locked>>	63%	21553	53%	**19	80%
Accurate Solo 1000	<<locked>>	61%	28747	71%	**40	100%
Accurate Solo 1250	<<locked>>	61%	25295	62%	**47	100%
[Accurate TCM]*	<<locked>>	61%	20334	50%	**89	80%
[Alliant 2400]*	<<locked>>	77%	26034	64%	**20	81%
Alliant BULLSEYE	<<locked>>	61%	32039	79%	**91	100%
Alliant POWER PISTOL	<<locked>>	61%	25092	62%	**81	97%
Alliant UNIQUE	<<locked>>	61%	25251	62%	**09	100%
Baschieri & Pellagri 100	<<locked>>	61%	27833	69%	**37	100%
Hodgdon Clays	<<locked>>	62%	30748	76%	**8	100%
Hodgdon HS-6	<<locked>>	61%	36332	89%	**93	100%
[Hodgdon LilGun]*	<<locked>>	92%	26760	66%	**99	81%
Hodgdon Universal	<<locked>>	61%	29704	73%	**12	100%
Hodgdon TrailBoss	<<locked>>	61%	9166	23%	**3	100%
Lovex D037.1	<<locked>>	61%	26310	65%	**17	90%
[Lovex D037.2]*	<<locked>>	63%	22002	54%	**32	81%
Lovex S011	<<locked>>	61%	36564	90%	**58	100%
Lovex S020	<<locked>>	61%	29689	73%	**35	100%
Maxam CSB 1	<<locked>>	62%	24091	59%	**27	100%
Maxam CSB 2	<<locked>>	61%	26049	64%	**56	100%
Maxam CSB 3	<<locked>>	61%	26876	66%	**40	100%
Maxam CSB 4	<<locked>>	61%	28601	70%	**50	100%
Maxam CSB 5	<<locked>>	61%	31546	78%	**40	100%
[Ramshot Enforcer]*	<<locked>>	77%	24279	60%	**04	81%
Ramshot Silhouette	<<locked>>	61%	36172	89%	**50	100%
ReloadSwiss RS 12	<<locked>>	61%	33982	84%	**35	100%
ReloadSwiss RS 14	<<locked>>	61%	8804	22%	**9	100%
ReloadSwiss RS 20	<<locked>>	61%	24236	60%	**89	100%
ReloadSwiss RS 24	<<locked>>	61%	22742	56%	**42	90%
Rottweil P 801	<<locked>>	61%	37608	93%	**45	100%
Rottweil P 806	<<locked>>	61%	19218	47%	**93	98%
SNPE Vectan A0	<<locked>>	61%	23656	58%	**50	100%
SNPE Vectan BA 9	<<locked>>	61%	28108	69%	**89	100%
SNPE Vectan BA10	<<locked>>	61%	31546	78%	**14	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	20479	50%	**37	99%
SNPE Vectan BA9 1/2	<<locked>>	61%	28079	69%	**89	100%
[Shooters World Heavy Pistol]*	<<locked>>	63%	22002	54%	**32	81%
Shooters World Major Pistol	<<locked>>	61%	26310	65%	**17	90%
Somchem MP200	<<locked>>	61%	29124	72%	**58	100%
Somchem MS200	<<locked>>	61%	26281	65%	**96	100%
Somchem S221	<<locked>>	61%	33344	82%	**93	98%
Vihtavuori 3N37	<<locked>>	61%	24134	59%	**22	100%
[Vihtavuori 3N38]*	<<locked>>	61%	17013	42%	**07	86%
[Vihtavuori N105]*	<<locked>>	61%	13373	33%	**1	85%
Vihtavuori N320	<<locked>>	61%	30124	74%	**70	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	18202	45%	**0	100%
Vihtavuori N330	<<locked>>	61%	28442	70%	**02	100%
Vihtavuori N340	<<locked>>	61%	25541	63%	**89	100%
Vihtavuori N350	<<locked>>	61%	21567	53%	**70	100%
Winchester 231	<<locked>>	61%	38261	94%	**91	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.