Load data for 8 x 57 IRS + .323 | 155gr | AERO SOSR,- smax:16.30

Recommended Powder(s): Accurate 2495, Accurate 4064, Alliant AR-Comp, IMR 3031, Norma 202

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.323 \| 155gr \| AERO SOSR,- smax:16.30
Bullet Weight:	155gr \| 10.0g
Bullet Diameter:	0.323" \| 8.20mm
Bullet Length:	1.260" \| 32.0mm
Caliber:	8 x 57 IRS load data
Case Length (l3):	2.244" \| 57.0mm
Cartridge Length (C.O.L.):	3.180" \| 80.8mm
Seated Depth:	0.324" \| 8.2mm
Shank Seated Depth:	0.324" \| 8.2mm
Case Capacity:	64.0 Grains of Water \| 4.16 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	47863 psi \| 3300 bar
LID:	LID_B79_C1173
Last updated:	2025-01-01

Load data for 132 loads in caliber 8 x 57 IRS with .323 | 155gr | AERO SOSR,- smax:16.30 bullet and 66 powders such as Accurate 2495, Accurate 4064, Alliant AR-Comp, IMR 3031, Norma 202. 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>>	90%	42076	88%	**03	95%
[ADI AR 2208]*	<<locked>>	96%	43033	90%	**94	94%
Accurate 2015	<<locked>>	87%	43033	90%	**74	100%
[Accurate 2200]*	<<locked>>	88%	43018	90%	**67	93%
Accurate 2230	<<locked>>	85%	42192	88%	**67	96%
Accurate 2460	<<locked>>	85%	42656	89%	**87	97%
Accurate 2495 👍	<<locked>>	92%	42351	88%	**49	100%
Accurate 2520	<<locked>>	90%	42772	89%	**40	98%
Accurate 4064 👍	<<locked>>	96%	40944	86%	**17	99%
Alliant AR-Comp 👍	<<locked>>	91%	42975	90%	**49	100%
Alliant Reloder- TS 15.5	<<locked>>	97%	41408	87%	**20	96%
Alliant Reloder-10x	<<locked>>	84%	42467	89%	**71	100%
[Alliant Reloder-15]*	<<locked>>	94%	42438	89%	**33	94%
[Alliant Reloder-17]*	<<locked>>	97%	37362	78%	**64	92%
[Baschieri & Pellagri 107]*	<<locked>>	91%	42917	90%	**26	93%
Hodgdon BL-C2	<<locked>>	90%	42859	90%	**56	96%
Hodgdon Benchmark	<<locked>>	87%	43018	90%	**51	97%
[Hodgdon CFE223]*	<<locked>>	95%	42583	89%	**43	93%
Hodgdon H322	<<locked>>	87%	42685	89%	**10	99%
[Hodgdon H380]*	<<locked>>	96%	42902	90%	**20	92%
[Hodgdon VARGET]*	<<locked>>	96%	42627	89%	**87	94%
Hodgdon TrailBoss	<<locked>>	96%	31488	66%	**93	100%
IMR 3031 👍	<<locked>>	95%	42351	88%	**62	100%
[IMR 4064]*	<<locked>>	97%	42061	88%	**71	94%
IMR 4895	<<locked>>	94%	42714	89%	**53	95%
IMR 8208 XBR	<<locked>>	89%	42380	89%	**87	96%
Lovex D073.4	<<locked>>	84%	42960	90%	**87	97%
Lovex D073.5	<<locked>>	85%	42206	88%	**80	97%
Lovex D073.6	<<locked>>	92%	42772	89%	**40	98%
Lovex S060	<<locked>>	90%	42685	89%	**35	95%
Lovex S062	<<locked>>	95%	42308	88%	**00	96%
Norma 201	<<locked>>	92%	42888	90%	**94	97%
Norma 202 👍	<<locked>>	92%	42989	90%	**20	99%
Norma 203B	<<locked>>	95%	42308	88%	**33	95%
[Ramshot Big Game]*	<<locked>>	95%	42380	89%	**43	94%
[Ramshot TAC]*	<<locked>>	89%	42989	90%	**71	91%
Ramshot Wild Boar	<<locked>>	90%	42873	90%	**20	95%
Ramshot X-Terminator	<<locked>>	86%	42960	90%	**67	95%
ReloadSwiss RS 14	<<locked>>	96%	31517	66%	**32	100%
ReloadSwiss RS 40	<<locked>>	85%	42902	90%	**97	98%
ReloadSwiss RS 52	<<locked>>	96%	42554	89%	**82	97%
[ReloadSwiss RS 60]*	<<locked>>	97%	36390	76%	**44	93%
Rottweil R 901	<<locked>>	89%	42960	90%	**90	99%
Rottweil R 902	<<locked>>	94%	42975	90%	**90	97%
[Rottweil R 903]*	<<locked>>	97%	38276	80%	**54	94%
[SNPE Vectan SP 11]*	<<locked>>	97%	41060	86%	**17	94%
[SNPE Vectan SP 7]*	<<locked>>	90%	42395	89%	**80	92%
SNPE Vectan SP 9	<<locked>>	92%	42569	89%	**07	95%
SNPE Vectan Tubal 3000	<<locked>>	90%	42830	89%	**28	99%
SNPE Vectan Tubal 5000	<<locked>>	96%	42859	90%	**44	99%
Shooters World Match Rifle	<<locked>>	92%	42772	89%	**40	98%
Shooters World Precision	<<locked>>	95%	42308	88%	**00	96%
Shooters World Tactical Rifle	<<locked>>	83%	42902	90%	**54	96%
Somchem S321	<<locked>>	86%	42366	89%	**03	97%
Somchem S335	<<locked>>	91%	42975	90%	**48	99%
Somchem S341	<<locked>>	91%	42801	89%	**00	95%
[Somchem S355]*	<<locked>>	96%	39291	82%	**61	94%
Vihtavuori N130	<<locked>>	86%	42583	89%	**21	100%
Vihtavuori N133	<<locked>>	92%	42453	89%	**35	100%
Vihtavuori N135	<<locked>>	96%	37304	78%	**15	99%
Vihtavuori N140	<<locked>>	94%	42467	89%	**90	99%
[Vihtavuori N150]*	<<locked>>	97%	33330	70%	**10	94%
Vihtavuori N530	<<locked>>	87%	42482	89%	**97	96%
Vihtavuori N540	<<locked>>	94%	42308	88%	**10	99%
Winchester 748	<<locked>>	87%	42873	90%	**49	97%
Winchester StaBALL Match	<<locked>>	86%	43004	90%	**40	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	81%	31154	65%	**44	90%
[ADI AR 2208]*	<<locked>>	88%	33692	70%	**84	90%
Accurate 2015	<<locked>>	81%	35433	74%	**26	99%
[Accurate 2200]*	<<locked>>	83%	36172	76%	**20	90%
[Accurate 2230]*	<<locked>>	81%	36854	77%	**52	94%
Accurate 2460	<<locked>>	81%	36593	76%	**66	96%
Accurate 2495	<<locked>>	81%	28964	61%	**54	98%
[Accurate 2520]*	<<locked>>	81%	30327	63%	**67	94%
[Accurate 4064]*	<<locked>>	81%	24381	51%	**10	93%
Alliant AR-Comp	<<locked>>	81%	31067	65%	**03	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	85%	28326	59%	**02	90%
Alliant Reloder-10x	<<locked>>	81%	39117	82%	**12	100%
[Alliant Reloder-15]*	<<locked>>	87%	33098	69%	**16	90%
[Alliant Reloder-17]*	<<locked>>	93%	33315	70%	**62	90%
[Baschieri & Pellagri 107]*	<<locked>>	85%	35114	73%	**56	90%
[Hodgdon BL-C2]*	<<locked>>	81%	30966	65%	**87	92%
Hodgdon Benchmark	<<locked>>	81%	35665	75%	**97	95%
[Hodgdon CFE223]*	<<locked>>	91%	36608	76%	**12	90%
Hodgdon H322	<<locked>>	81%	34954	73%	**46	98%
[Hodgdon H380]*	<<locked>>	92%	37391	78%	**05	90%
[Hodgdon VARGET]*	<<locked>>	89%	34040	71%	**90	90%
Hodgdon TrailBoss	<<locked>>	91%	29167	61%	**44	100%
IMR 3031	<<locked>>	81%	27224	57%	**05	96%
[IMR 4064]*	<<locked>>	88%	32851	69%	**67	90%
[IMR 4895]*	<<locked>>	84%	31183	65%	**87	90%
[IMR 8208 XBR]*	<<locked>>	81%	33083	69%	**77	93%
Lovex D073.4	<<locked>>	81%	38305	80%	**89	96%
Lovex D073.5	<<locked>>	81%	36158	76%	**56	96%
[Lovex D073.6]*	<<locked>>	81%	28601	60%	**18	93%
[Lovex S060]*	<<locked>>	81%	32967	69%	**21	91%
[Lovex S062]*	<<locked>>	81%	27195	57%	**39	90%
[Norma 201]*	<<locked>>	81%	30371	63%	**08	92%
Norma 202	<<locked>>	81%	30313	63%	**41	95%
[Norma 203B]*	<<locked>>	86%	31183	65%	**77	90%
[Ramshot Big Game]*	<<locked>>	88%	33359	70%	**30	90%
[Ramshot TAC]*	<<locked>>	86%	40016	84%	**15	90%
[Ramshot Wild Boar]*	<<locked>>	81%	31749	66%	**67	90%
[Ramshot X-Terminator]*	<<locked>>	81%	36492	76%	**26	92%
ReloadSwiss RS 14	<<locked>>	88%	27673	58%	**54	100%
ReloadSwiss RS 40	<<locked>>	81%	37594	79%	**82	96%
[ReloadSwiss RS 52]*	<<locked>>	83%	27485	57%	**05	90%
[ReloadSwiss RS 60]*	<<locked>>	94%	33257	69%	**52	91%
Rottweil R 901	<<locked>>	81%	33489	70%	**77	96%
[Rottweil R 902]*	<<locked>>	81%	28848	60%	**62	91%
[Rottweil R 903]*	<<locked>>	89%	28892	60%	**31	90%
[SNPE Vectan SP 11]*	<<locked>>	90%	32909	69%	**23	90%
[SNPE Vectan SP 7]*	<<locked>>	87%	37782	79%	**82	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	31604	66%	**54	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	32576	68%	**11	96%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	26223	55%	**64	94%
[Shooters World Match Rifle]*	<<locked>>	81%	28601	60%	**18	93%
[Shooters World Precision]*	<<locked>>	81%	27195	57%	**39	90%
Shooters World Tactical Rifle	<<locked>>	81%	39668	83%	**92	95%
[Somchem S321]*	<<locked>>	81%	34969	73%	**46	94%
Somchem S335	<<locked>>	81%	31734	66%	**08	97%
[Somchem S341]*	<<locked>>	82%	31676	66%	**51	90%
[Somchem S355]*	<<locked>>	88%	29472	62%	**25	90%
Vihtavuori N130	<<locked>>	81%	36390	76%	**07	100%
Vihtavuori N133	<<locked>>	81%	30342	63%	**75	98%
[Vihtavuori N135]*	<<locked>>	81%	22945	48%	**28	94%
Vihtavuori N140	<<locked>>	81%	28326	59%	**65	95%
[Vihtavuori N150]*	<<locked>>	89%	26353	55%	**13	90%
[Vihtavuori N530]*	<<locked>>	81%	34766	73%	**33	94%
[Vihtavuori N540]*	<<locked>>	81%	27760	58%	**65	94%
Winchester 748	<<locked>>	81%	34011	71%	**62	95%
[Winchester StaBALL Match]*	<<locked>>	81%	36245	76%	**95	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