Load data for 7.7 X 58 mm Arisaka + .308 | 123gr | Sako Gamehead

Recommended Powder(s): Accurate 2495, IMR 3031

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.308 \| 123gr \| Sako Gamehead
Manufacturer SKU:	129A
Bullet Weight:	123gr \| 8.0g
Bullet Diameter:	0.308" \| 7.82mm
Bullet Length:	<<locked>>
Caliber:	7.7 X 58 mm Arisaka load data
Case Length (l3):	2.270" \| 57.7mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	61.0 Grains of Water \| 3.96 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B10478_C1134
Last updated:	2026-03-23

Load data for 110 loads in caliber 7.7 X 58 mm Arisaka with .308 | 123gr | Sako Gamehead bullet and 55 powders such as Accurate 2495, IMR 3031. 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 AR 2206H]*	<<locked>>	88%	40118	89%	**84	93%
[ADI AR 2208]*	<<locked>>	93%	39813	89%	**51	91%
[ADI Benchmark 8208]*	<<locked>>	87%	40205	89%	**67	94%
Accurate 2015	<<locked>>	85%	40466	90%	**54	100%
Accurate 2460	<<locked>>	83%	40292	90%	**67	96%
Accurate 2495 👍	<<locked>>	90%	40306	90%	**36	99%
Accurate 2520	<<locked>>	88%	39842	89%	**07	96%
Accurate 4064	<<locked>>	95%	39798	89%	**23	98%
Alliant AR-Comp	<<locked>>	88%	39784	88%	**30	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	95%	39842	89%	**10	94%
[Alliant Reloder-15]*	<<locked>>	92%	40306	90%	**04	92%
[Bofors RP3]*	<<locked>>	96%	40422	90%	**30	94%
[Hodgdon BL-C2]*	<<locked>>	88%	40074	89%	**23	94%
Hodgdon Benchmark	<<locked>>	84%	40234	89%	**18	95%
Hodgdon H322	<<locked>>	85%	40350	90%	**97	98%
[Hodgdon H4895]*	<<locked>>	88%	40277	90%	**00	94%
[Hodgdon VARGET]*	<<locked>>	94%	40205	89%	**54	92%
Hodgdon TrailBoss	<<locked>>	96%	31531	70%	**77	100%
IMR 3031 👍	<<locked>>	93%	39900	89%	**53	99%
[IMR 4064]*	<<locked>>	94%	39914	89%	**44	92%
[IMR 4895]*	<<locked>>	92%	40205	89%	**30	93%
[IMR 8208 XBR]*	<<locked>>	87%	40205	89%	**67	94%
Lovex D073.5	<<locked>>	83%	39827	89%	**58	96%
Lovex D073.6	<<locked>>	90%	39392	88%	**00	96%
[Lovex S060]*	<<locked>>	87%	39885	89%	**95	93%
Lovex S062	<<locked>>	93%	40335	90%	**87	95%
Norma 201	<<locked>>	89%	40205	89%	**67	95%
Norma 202	<<locked>>	89%	40248	90%	**94	97%
[Norma 203B]*	<<locked>>	93%	40118	89%	**13	93%
[Ramshot Big Game]*	<<locked>>	93%	40219	89%	**10	92%
[Ramshot Wild Boar]*	<<locked>>	87%	40219	89%	**94	93%
[Ramshot X-Terminator]*	<<locked>>	84%	40364	90%	**38	93%
ReloadSwiss RS 14	<<locked>>	96%	31473	70%	**19	100%
ReloadSwiss RS 60	<<locked>>	97%	40393	90%	**72	95%
Rottweil R 901	<<locked>>	86%	39769	88%	**48	97%
Rottweil R 902	<<locked>>	91%	40248	90%	**54	95%
[Rottweil R 903]*	<<locked>>	97%	39189	87%	**97	93%
[SNPE Vectan SP 11]*	<<locked>>	95%	39740	88%	**07	92%
[SNPE Vectan SP 9]*	<<locked>>	89%	39987	89%	**81	93%
SNPE Vectan Tubal 3000	<<locked>>	87%	39943	89%	**92	97%
SNPE Vectan Tubal 5000	<<locked>>	94%	40408	90%	**22	98%
Shooters World Match Rifle	<<locked>>	90%	39392	88%	**00	96%
Shooters World Precision	<<locked>>	93%	40335	90%	**87	95%
Somchem S321	<<locked>>	84%	39900	89%	**74	95%
Somchem S335	<<locked>>	88%	40219	89%	**22	98%
[Somchem S341]*	<<locked>>	88%	40074	89%	**61	92%
[Somchem S355]*	<<locked>>	97%	40045	89%	**94	93%
Vihtavuori N130	<<locked>>	83%	39914	89%	**02	100%
Vihtavuori N133	<<locked>>	90%	39958	89%	**15	99%
Vihtavuori N135	<<locked>>	97%	38189	85%	**54	99%
Vihtavuori N140	<<locked>>	91%	40205	89%	**71	98%
[Vihtavuori N150]*	<<locked>>	97%	33953	76%	**30	93%
Vihtavuori N530	<<locked>>	85%	40219	89%	**74	95%
Vihtavuori N540	<<locked>>	92%	40408	90%	**00	97%
Winchester 748	<<locked>>	85%	40045	89%	**23	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	84%	34766	77%	**49	90%
[ADI AR 2208]*	<<locked>>	90%	36492	81%	**72	90%
[ADI Benchmark 8208]*	<<locked>>	81%	33518	75%	**97	92%
Accurate 2015	<<locked>>	81%	36100	80%	**59	99%
Accurate 2460	<<locked>>	81%	37449	83%	**02	95%
Accurate 2495	<<locked>>	81%	29936	67%	**87	97%
[Accurate 2520]*	<<locked>>	81%	31270	70%	**94	93%
[Accurate 4064]*	<<locked>>	81%	25208	56%	**23	91%
Alliant AR-Comp	<<locked>>	81%	31589	70%	**36	99%
[Alliant Reloder- TS 15.5]*	<<locked>>	87%	31459	70%	**87	90%
[Alliant Reloder-15]*	<<locked>>	89%	35955	80%	**02	90%
[Bofors RP3]*	<<locked>>	88%	31415	70%	**10	90%
[Hodgdon BL-C2]*	<<locked>>	81%	31473	70%	**07	91%
[Hodgdon Benchmark]*	<<locked>>	81%	36201	81%	**26	94%
Hodgdon H322	<<locked>>	81%	35230	78%	**82	97%
[Hodgdon H4895]*	<<locked>>	82%	32822	73%	**07	90%
[Hodgdon VARGET]*	<<locked>>	91%	36854	82%	**79	90%
Hodgdon TrailBoss	<<locked>>	81%	24947	55%	**22	100%
IMR 3031	<<locked>>	81%	27818	62%	**25	95%
[IMR 4064]*	<<locked>>	91%	36405	81%	**59	90%
[IMR 4895]*	<<locked>>	87%	34214	76%	**72	90%
[IMR 8208 XBR]*	<<locked>>	81%	33518	75%	**97	92%
Lovex D073.5	<<locked>>	81%	37028	82%	**92	95%
[Lovex D073.6]*	<<locked>>	81%	29051	65%	**28	92%
[Lovex S060]*	<<locked>>	82%	33939	75%	**54	90%
[Lovex S062]*	<<locked>>	83%	29950	67%	**15	90%
[Norma 201]*	<<locked>>	81%	31053	69%	**35	91%
[Norma 202]*	<<locked>>	81%	30777	68%	**54	94%
[Norma 203B]*	<<locked>>	88%	33852	75%	**59	90%
[Ramshot Big Game]*	<<locked>>	89%	36274	81%	**12	90%
[Ramshot Wild Boar]*	<<locked>>	83%	34882	78%	**56	90%
[Ramshot X-Terminator]*	<<locked>>	81%	36999	82%	**49	91%
ReloadSwiss RS 14	<<locked>>	81%	25092	56%	**62	100%
[ReloadSwiss RS 60]*	<<locked>>	89%	31691	70%	**23	90%
Rottweil R 901	<<locked>>	81%	34476	77%	**20	95%
[Rottweil R 902]*	<<locked>>	82%	30037	67%	**92	90%
[Rottweil R 903]*	<<locked>>	91%	32242	72%	**17	90%
[SNPE Vectan SP 11]*	<<locked>>	93%	36506	81%	**28	90%
[SNPE Vectan SP 9]*	<<locked>>	85%	34650	77%	**43	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	33257	74%	**38	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	26789	60%	**67	93%
[Shooters World Match Rifle]*	<<locked>>	81%	29051	65%	**28	92%
[Shooters World Precision]*	<<locked>>	83%	29950	67%	**15	90%
[Somchem S321]*	<<locked>>	81%	35737	79%	**76	93%
Somchem S335	<<locked>>	81%	32271	72%	**35	96%
[Somchem S341]*	<<locked>>	84%	34737	77%	**36	90%
[Somchem S355]*	<<locked>>	90%	32750	73%	**17	90%
Vihtavuori N130	<<locked>>	81%	37086	82%	**40	99%
Vihtavuori N133	<<locked>>	81%	30647	68%	**92	97%
[Vihtavuori N135]*	<<locked>>	81%	23569	52%	**38	93%
[Vihtavuori N140]*	<<locked>>	81%	28805	64%	**82	93%
[Vihtavuori N150]*	<<locked>>	92%	29196	65%	**92	90%
[Vihtavuori N530]*	<<locked>>	81%	35230	78%	**56	93%
[Vihtavuori N540]*	<<locked>>	81%	28587	64%	**92	93%
[Winchester 748]*	<<locked>>	81%	34592	77%	**89	93%

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.

<<locked>>... you need to buy an access license to unlock the data