Load data for .44 Auto Mag. + .429 | 270gr | Speer SP GD

Recommended Powder(s): Alliant POWER PISTOL

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.429 \| 270gr \| Speer SP GD
Manufacturer SKU:	4461
Bullet Weight:	270gr \| 17.5g
Bullet Diameter:	0.429" \| 10.90mm
Bullet Length:	0.752" \| 19.1mm
Caliber:	.44 Auto Mag. load data
Case Length (l3):	1.298" \| 33.0mm
Cartridge Length (C.O.L.):	1.674" \| 42.5mm
Seated Depth:	0.375" \| 9.5mm
Shank Seated Depth:	0.375" \| 9.5mm
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_B6278_C710
Last updated:	2025-01-01

Load data for 98 loads in caliber .44 Auto Mag. with .429 | 270gr | Speer SP GD bullet and 49 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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Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
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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>>	82%	31836	86%	**71	100%
ADI APS 350	<<locked>>	64%	32169	87%	**5	100%
ADI APS 450	<<locked>>	66%	32880	89%	**8	100%
ADI AS 30	<<locked>>	67%	33112	90%	**4	100%
[Accurate 4100]*	<<locked>>	86%	32126	87%	**37	83%
Accurate No. 2	<<locked>>	65%	33257	90%	**06	100%
Accurate No. 7	<<locked>>	66%	32677	88%	**40	95%
Accurate No. 9	<<locked>>	74%	32692	88%	**37	90%
Accurate Solo 1000	<<locked>>	66%	32996	89%	**14	100%
Accurate Solo 1250	<<locked>>	70%	33199	90%	**66	100%
Accurate TCM	<<locked>>	74%	33040	89%	**37	92%
[Alliant 2400]*	<<locked>>	83%	32358	87%	**50	87%
Alliant BLUE DOT	<<locked>>	85%	33098	89%	**37	94%
Alliant POWER PISTOL 👍	<<locked>>	68%	31807	86%	**07	100%
Alliant UNIQUE	<<locked>>	69%	32735	89%	**22	100%
Baschieri & Pellagri 100	<<locked>>	65%	31995	87%	**07	100%
Hodgdon Clays	<<locked>>	64%	32982	89%	**2	100%
[Hodgdon LilGun]*	<<locked>>	96%	32111	87%	**19	88%
Hodgdon Universal	<<locked>>	63%	32198	87%	**66	100%
Hodgdon TrailBoss	<<locked>>	96%	18608	50%	**0	100%
Lovex D037.1	<<locked>>	66%	32677	88%	**40	95%
Lovex D037.2	<<locked>>	72%	31937	86%	**27	90%
Lovex S020	<<locked>>	63%	32764	89%	**89	100%
Maxam CSB 1	<<locked>>	73%	33272	90%	**63	100%
Maxam CSB 2	<<locked>>	67%	32155	87%	**50	100%
Maxam CSB 3	<<locked>>	68%	32822	89%	**37	100%
Maxam CSB 4	<<locked>>	66%	32982	89%	**20	100%
[Ramshot Enforcer]*	<<locked>>	84%	32648	88%	**66	89%
ReloadSwiss RS 14	<<locked>>	96%	17245	47%	**3	100%
ReloadSwiss RS 20	<<locked>>	69%	31981	86%	**06	100%
ReloadSwiss RS 24	<<locked>>	72%	33228	90%	**37	97%
Rottweil P 806	<<locked>>	74%	31749	86%	**17	100%
SNPE Vectan A0	<<locked>>	71%	32285	87%	**83	100%
SNPE Vectan BA 9	<<locked>>	65%	32372	88%	**63	100%
SNPE Vectan BA7 1/2	<<locked>>	76%	32343	87%	**38	100%
SNPE Vectan BA9 1/2	<<locked>>	65%	32532	88%	**60	100%
Shooters World Heavy Pistol	<<locked>>	72%	31937	86%	**27	90%
Shooters World Major Pistol	<<locked>>	66%	32677	88%	**40	95%
Somchem MP200	<<locked>>	63%	31995	86%	**09	100%
Somchem MS200	<<locked>>	67%	32126	87%	**89	100%
Vihtavuori 3N37	<<locked>>	69%	32372	88%	**55	100%
Vihtavuori 3N38	<<locked>>	80%	32300	87%	**11	98%
Vihtavuori N105	<<locked>>	86%	32024	87%	**47	100%
[Vihtavuori N110]*	<<locked>>	97%	25570	69%	**68	83%
Vihtavuori N320	<<locked>>	63%	32750	89%	**20	100%
Vihtavuori N32C Tin Star	<<locked>>	88%	33272	90%	**8	100%
Vihtavuori N330	<<locked>>	65%	33272	90%	**76	100%
Vihtavuori N340	<<locked>>	67%	31647	86%	**86	100%
Vihtavuori N350	<<locked>>	72%	31720	86%	**45	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	17579	48%	**2	94%
ADI APS 350	<<locked>>	61%	30211	82%	**2	100%
ADI APS 450	<<locked>>	61%	29138	79%	**5	100%
ADI AS 30	<<locked>>	62%	29109	79%	**5	100%
[Accurate 4100]*	<<locked>>	83%	28181	76%	**78	81%
Accurate No. 2	<<locked>>	61%	29327	79%	**63	100%
Accurate No. 7	<<locked>>	61%	27050	73%	**55	93%
[Accurate No. 9]*	<<locked>>	61%	20566	56%	**33	81%
Accurate Solo 1000	<<locked>>	61%	29167	79%	**4	100%
Accurate Solo 1250	<<locked>>	61%	25802	70%	**1	100%
[Accurate TCM]*	<<locked>>	61%	20740	56%	**30	83%
[Alliant 2400]*	<<locked>>	73%	23525	64%	**06	81%
[Alliant BLUE DOT]*	<<locked>>	61%	16041	43%	**5	81%
Alliant POWER PISTOL	<<locked>>	61%	25759	70%	**12	98%
Alliant UNIQUE	<<locked>>	61%	25904	70%	**33	100%
Baschieri & Pellagri 100	<<locked>>	61%	28326	77%	**8	100%
Hodgdon Clays	<<locked>>	61%	30835	83%	**9	100%
[Hodgdon LilGun]*	<<locked>>	87%	23482	63%	**65	80%
Hodgdon Universal	<<locked>>	61%	30371	82%	**43	100%
Hodgdon TrailBoss	<<locked>>	69%	10892	29%	**3	100%
Lovex D037.1	<<locked>>	61%	27050	73%	**55	93%
[Lovex D037.2]*	<<locked>>	61%	21176	57%	**47	82%
Lovex S020	<<locked>>	61%	30908	84%	**70	100%
Maxam CSB 1	<<locked>>	61%	24685	67%	**8	100%
Maxam CSB 2	<<locked>>	61%	26731	72%	**8	100%
Maxam CSB 3	<<locked>>	61%	27282	74%	**4	100%
Maxam CSB 4	<<locked>>	61%	29138	79%	**8	100%
[Ramshot Enforcer]*	<<locked>>	73%	21669	59%	**86	81%
ReloadSwiss RS 14	<<locked>>	65%	9413	25%	**6	100%
ReloadSwiss RS 20	<<locked>>	61%	25179	68%	**27	100%
ReloadSwiss RS 24	<<locked>>	61%	23482	63%	**76	92%
Rottweil P 806	<<locked>>	61%	19798	54%	**37	99%
SNPE Vectan A0	<<locked>>	61%	24279	66%	**4	100%
SNPE Vectan BA 9	<<locked>>	61%	28993	78%	**20	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	21161	57%	**4	100%
SNPE Vectan BA9 1/2	<<locked>>	61%	28979	78%	**24	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	21176	57%	**47	82%
Shooters World Major Pistol	<<locked>>	61%	27050	73%	**55	93%
Somchem MP200	<<locked>>	61%	30414	82%	**93	100%
Somchem MS200	<<locked>>	61%	26919	73%	**30	100%
Vihtavuori 3N37	<<locked>>	61%	24555	66%	**56	100%
[Vihtavuori 3N38]*	<<locked>>	61%	17361	47%	**1	88%
[Vihtavuori N105]*	<<locked>>	61%	13518	37%	**9	88%
[Vihtavuori N110]*	<<locked>>	92%	22031	60%	**06	80%
Vihtavuori N320	<<locked>>	61%	30734	83%	**7	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	18101	49%	**1	100%
Vihtavuori N330	<<locked>>	61%	29457	80%	**30	100%
Vihtavuori N340	<<locked>>	61%	26382	71%	**24	100%
Vihtavuori N350	<<locked>>	61%	22481	61%	**17	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.