Load data for 7.63 Mauser + .308 | 150gr | Speer Grand Slam

Recommended Powder(s): Alliant UNIQUE, Hodgdon Longshot, Ramshot True Blue, Vihtavuori 3N37, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.308 \| 150gr \| Speer Grand Slam
Manufacturer SKU:	2026
Bullet Weight:	150gr \| 9.7g
Bullet Diameter:	0.308" \| 7.82mm
Bullet Length:	1.020" \| 25.9mm
Caliber:	7.63 Mauser load data
Case Length (l3):	0.990" \| 25.1mm
Cartridge Length (C.O.L.):	1.359" \| 34.5mm
Seated Depth:	0.651" \| 16.5mm
Shank Seated Depth:	0.651" \| 16.5mm
Case Capacity:	17.2 Grains of Water \| 1.12 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	37710 psi \| 2600 bar
LID:	LID_B6149_C1127
Last updated:	2025-01-01

Load data for 108 loads in caliber 7.63 Mauser with .308 | 150gr | Speer Grand Slam bullet and 54 powders such as Alliant UNIQUE, Hodgdon Longshot, Ramshot True Blue, Vihtavuori 3N37, 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".

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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>>	93%	22945	61%	**7	89%
ADI AP 70N	<<locked>>	71%	30530	81%	**7	100%
ADI APS 350	<<locked>>	78%	32967	87%	**2	100%
ADI APS 450	<<locked>>	78%	31386	83%	**9	100%
ADI AS 30	<<locked>>	78%	30052	80%	**8	100%
ADI AS 50N	<<locked>>	75%	29747	79%	**8	100%
Accurate No. 2	<<locked>>	81%	32547	86%	**3	100%
Accurate No. 5	<<locked>>	69%	32808	87%	**2	96%
[Accurate No. 7]*	<<locked>>	88%	31923	85%	**8	84%
Accurate Solo 1000	<<locked>>	79%	30589	81%	**1	100%
Accurate Solo 1250	<<locked>>	90%	33286	88%	**7	100%
Alliant BULLSEYE	<<locked>>	76%	30864	82%	**3	100%
Alliant POWER PISTOL	<<locked>>	89%	31343	83%	**9	94%
Alliant UNIQUE 👍	<<locked>>	89%	31850	84%	**9	100%
Baschieri & Pellagri 100	<<locked>>	85%	33576	89%	**7	100%
Hodgdon Clays	<<locked>>	78%	33576	89%	**5	100%
Hodgdon HS-6	<<locked>>	75%	33808	90%	**9	98%
Hodgdon Longshot 👍	<<locked>>	70%	32213	85%	**3	99%
Hodgdon Universal	<<locked>>	79%	30530	81%	**7	100%
Lovex D036	<<locked>>	69%	32750	87%	**2	96%
[Lovex D037.1]*	<<locked>>	88%	31923	85%	**8	84%
Lovex S011	<<locked>>	70%	30835	82%	**4	100%
Lovex S020	<<locked>>	82%	33692	89%	**3	100%
Maxam CSB 1	<<locked>>	91%	31140	83%	**7	100%
Maxam CSB 2	<<locked>>	89%	31256	83%	**3	100%
Maxam CSB 3	<<locked>>	88%	33344	88%	**0	100%
Maxam CSB 4	<<locked>>	84%	32909	87%	**4	100%
Maxam CSB 5	<<locked>>	74%	30255	80%	**8	100%
Ramshot Silhouette	<<locked>>	74%	32010	85%	**9	100%
Ramshot True Blue 👍	<<locked>>	70%	32518	86%	**3	99%
Ramshot Zip	<<locked>>	64%	33330	88%	**3	100%
ReloadSwiss RS 12	<<locked>>	76%	30937	82%	**7	100%
ReloadSwiss RS 20	<<locked>>	91%	29965	79%	**3	100%
[ReloadSwiss RS 24]*	<<locked>>	94%	32300	86%	**2	88%
Rottweil P 801	<<locked>>	72%	33069	88%	**7	100%
Rottweil P 806	<<locked>>	94%	24424	65%	**2	96%
SNPE Vectan A0	<<locked>>	89%	30400	81%	**0	100%
SNPE Vectan BA 9	<<locked>>	83%	32169	85%	**0	100%
SNPE Vectan BA10	<<locked>>	72%	31372	83%	**9	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	31038	82%	**0	98%
SNPE Vectan BA9 1/2	<<locked>>	83%	31807	84%	**0	100%
Shooters World Auto Pistol	<<locked>>	69%	32750	87%	**2	96%
[Shooters World Major Pistol]*	<<locked>>	88%	31923	85%	**8	84%
Somchem MP200	<<locked>>	82%	32518	86%	**6	100%
Somchem MS200	<<locked>>	88%	33069	88%	**3	100%
Somchem S221	<<locked>>	78%	32358	86%	**2	91%
Vihtavuori 3N37 👍	<<locked>>	92%	32256	86%	**6	99%
[Vihtavuori 3N38]*	<<locked>>	95%	23989	64%	**0	83%
Vihtavuori N320	<<locked>>	80%	31720	84%	**1	100%
Vihtavuori N32C Tin Star	<<locked>>	95%	24700	65%	**6	100%
Vihtavuori N330	<<locked>>	83%	30792	82%	**0	100%
Vihtavuori N340	<<locked>>	86%	31024	82%	**0	100%
Vihtavuori N350 👍	<<locked>>	93%	29936	79%	**9	99%
Winchester 231	<<locked>>	71%	33330	88%	**3	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	78%	16592	44%	**9	84%
ADI AP 70N	<<locked>>	62%	23496	62%	**8	100%
ADI APS 350	<<locked>>	71%	28529	76%	**9	100%
ADI APS 450	<<locked>>	71%	27296	72%	**6	100%
ADI AS 30	<<locked>>	65%	22292	59%	**6	100%
ADI AS 50N	<<locked>>	64%	22553	60%	**9	100%
Accurate No. 2	<<locked>>	61%	18260	48%	**9	96%
Accurate No. 5	<<locked>>	62%	26876	71%	**7	94%
[Accurate No. 7]*	<<locked>>	81%	26208	69%	**6	81%
Accurate Solo 1000	<<locked>>	61%	19827	53%	**6	100%
Accurate Solo 1250	<<locked>>	68%	19203	51%	**2	100%
Alliant BULLSEYE	<<locked>>	61%	20798	55%	**8	100%
[Alliant POWER PISTOL]*	<<locked>>	64%	16288	43%	**5	82%
Alliant UNIQUE	<<locked>>	63%	17100	45%	**2	98%
Baschieri & Pellagri 100	<<locked>>	68%	21988	58%	**9	100%
Hodgdon Clays	<<locked>>	71%	28776	76%	**9	100%
Hodgdon HS-6	<<locked>>	61%	21959	58%	**8	93%
Hodgdon Longshot	<<locked>>	60%	23076	61%	**4	96%
Hodgdon Universal	<<locked>>	63%	20639	55%	**2	100%
Lovex D036	<<locked>>	62%	26832	71%	**7	94%
[Lovex D037.1]*	<<locked>>	81%	26208	69%	**6	81%
Lovex S011	<<locked>>	60%	23061	61%	**5	100%
Lovex S020	<<locked>>	63%	19508	52%	**2	100%
Maxam CSB 1	<<locked>>	68%	18565	49%	**9	100%
Maxam CSB 2	<<locked>>	61%	15809	42%	**9	100%
Maxam CSB 3	<<locked>>	64%	19435	52%	**6	100%
Maxam CSB 4	<<locked>>	66%	21872	58%	**9	100%
Maxam CSB 5	<<locked>>	62%	22307	59%	**6	100%
Ramshot Silhouette	<<locked>>	62%	22582	60%	**1	99%
Ramshot True Blue	<<locked>>	60%	23525	62%	**7	96%
Ramshot Zip	<<locked>>	60%	29878	79%	**1	100%
ReloadSwiss RS 12	<<locked>>	60%	20537	54%	**9	100%
ReloadSwiss RS 20	<<locked>>	65%	15998	42%	**2	99%
[ReloadSwiss RS 24]*	<<locked>>	79%	21625	57%	**1	80%
Rottweil P 801	<<locked>>	63%	25628	68%	**5	100%
[Rottweil P 806]*	<<locked>>	67%	11748	31%	**6	84%
SNPE Vectan A0	<<locked>>	68%	18550	49%	**6	98%
SNPE Vectan BA 9	<<locked>>	63%	19638	52%	**9	100%
SNPE Vectan BA10	<<locked>>	66%	27282	72%	**6	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	69%	16157	43%	**9	89%
SNPE Vectan BA9 1/2	<<locked>>	63%	19029	50%	**9	100%
Shooters World Auto Pistol	<<locked>>	62%	26832	71%	**7	94%
[Shooters World Major Pistol]*	<<locked>>	81%	26208	69%	**6	81%
Somchem MP200	<<locked>>	60%	17724	47%	**2	97%
Somchem MS200	<<locked>>	62%	17883	47%	**9	99%
[Somchem S221]*	<<locked>>	61%	19696	52%	**5	82%
Vihtavuori 3N37	<<locked>>	66%	15925	42%	**2	91%
[Vihtavuori 3N38]*	<<locked>>	91%	21712	58%	**1	82%
Vihtavuori N320	<<locked>>	63%	20407	54%	**6	100%
Vihtavuori N32C Tin Star	<<locked>>	88%	21582	57%	**6	100%
Vihtavuori N330	<<locked>>	62%	17579	47%	**2	100%
Vihtavuori N340	<<locked>>	61%	16056	43%	**3	97%
Vihtavuori N350	<<locked>>	65%	14518	39%	**9	90%
Winchester 231	<<locked>>	62%	26165	69%	**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