Load data for .303 Savage + .308 | 150gr | Sierra SBT GameKing

Recommended Powder(s): Alliant AR-Comp

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.308 \| 150gr \| Sierra SBT GameKing
Manufacturer SKU:	2125
Bullet Weight:	150gr \| 9.7g
Bullet Diameter:	0.308" \| 7.82mm
Bullet Length:	1.096" \| 27.8mm
Caliber:	.303 Savage load data
Case Length (l3):	2.014" \| 51.2mm
Cartridge Length (C.O.L.):	2.482" \| 63.0mm
Seated Depth:	0.628" \| 15.9mm
Shank Seated Depth:	0.478" \| 12.1mm
Case Capacity:	45.0 Grains of Water \| 2.92 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	39160 psi \| 2700 bar
LID:	LID_B5873_C391
Last updated:	2025-01-01
Recommended Twist Rate:	1:14 - 1:12

Load data for 46 loads in caliber .303 Savage with .308 | 150gr | Sierra SBT GameKing bullet and 23 powders such as Alliant AR-Comp. 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)
Muzzle velocity vs. barrel length
Every 1 inch additional barrel length increases muzzle velocity by approx. 20.9 fps
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 AR 2219]*	<<locked>>	86%	34505	88%	**47	94%
Accurate 2015	<<locked>>	92%	34606	88%	**47	97%
Accurate 2495	<<locked>>	96%	30139	77%	**51	96%
[Accurate 2520]*	<<locked>>	97%	33997	87%	**80	92%
Alliant AR-Comp 👍	<<locked>>	96%	35041	89%	**16	99%
Alliant Reloder-10x	<<locked>>	88%	34345	88%	**47	98%
Baschieri & Pellagri 106	<<locked>>	86%	35085	90%	**75	95%
Hodgdon H322	<<locked>>	92%	34809	89%	**57	95%
[Hodgdon H335]*	<<locked>>	87%	34751	89%	**57	93%
[IMR 3031]*	<<locked>>	97%	30835	79%	**18	94%
IMR 4198	<<locked>>	86%	35186	90%	**08	99%
Norma 200	<<locked>>	84%	33982	87%	**28	98%
[Norma 202]*	<<locked>>	96%	33460	85%	**41	93%
[ReloadSwiss RS 40]*	<<locked>>	90%	35186	90%	**44	92%
[Rottweil R 901]*	<<locked>>	93%	34432	88%	**31	93%
[SNPE Vectan SP 10]*	<<locked>>	86%	34113	87%	**44	93%
[SNPE Vectan Tubal 3000]*	<<locked>>	93%	34026	87%	**65	93%
[SNPE Vectan Tubal 5000]*	<<locked>>	96%	30429	78%	**93	92%
[Somchem S335]*	<<locked>>	95%	34490	88%	**05	94%
Vihtavuori N120	<<locked>>	84%	34360	88%	**85	100%
Vihtavuori N130	<<locked>>	91%	35186	90%	**08	98%
Vihtavuori N133	<<locked>>	97%	34505	88%	**01	96%
[Vihtavuori N140]*	<<locked>>	97%	32547	83%	**92	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2219]*	<<locked>>	81%	29486	75%	**33	92%
[Accurate 2015]*	<<locked>>	81%	24424	62%	**08	93%
[Accurate 2495]*	<<locked>>	85%	20842	53%	**01	90%
[Accurate 2520]*	<<locked>>	94%	31009	79%	**15	90%
[Alliant AR-Comp]*	<<locked>>	81%	22176	57%	**72	93%
Alliant Reloder-10x	<<locked>>	81%	27354	70%	**87	95%
[Baschieri & Pellagri 106]*	<<locked>>	81%	30269	77%	**80	94%
[Hodgdon H322]*	<<locked>>	83%	26585	68%	**54	90%
[Hodgdon H335]*	<<locked>>	82%	29283	75%	**29	90%
[IMR 3031]*	<<locked>>	91%	25918	66%	**83	91%
IMR 4198	<<locked>>	81%	29979	77%	**96	97%
Norma 200	<<locked>>	81%	30879	79%	**62	98%
[Norma 202]*	<<locked>>	91%	28863	74%	**36	91%
[ReloadSwiss RS 40]*	<<locked>>	86%	31241	80%	**56	90%
[Rottweil R 901]*	<<locked>>	87%	28631	73%	**96	90%
[SNPE Vectan SP 10]*	<<locked>>	81%	29443	75%	**33	91%
[SNPE Vectan Tubal 3000]*	<<locked>>	87%	28079	72%	**34	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	92%	26803	68%	**08	90%
[Somchem S335]*	<<locked>>	85%	25512	65%	**98	90%
Vihtavuori N120	<<locked>>	81%	31082	79%	**26	100%
Vihtavuori N130	<<locked>>	81%	26339	67%	**11	95%
[Vihtavuori N133]*	<<locked>>	82%	22626	58%	**03	90%
[Vihtavuori N140]*	<<locked>>	92%	28239	72%	**87	90%

Start Load - Barrel Length: 23.60''

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.