Load data for 8 x 57 IRS + .323 | 165gr | Frontier BTSP

Recommended Powder(s): Accurate 4064, IMR 3031, Lovex D073.6, Shooters World Match Rifle, Vihtavuori N540

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.323 \| 165gr \| Frontier BTSP
Bullet Weight:	165gr \| 10.7g
Bullet Diameter:	0.323" \| 8.20mm
Bullet Length:	1.344" \| 34.1mm
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:	0.408" \| 10.4mm
Shank Seated Depth:	0.208" \| 5.3mm
Case Capacity:	64.0 Grains of Water \| 4.16 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	47863 psi \| 3300 bar
LID:	LID_B10472_C1173
Last updated:	2025-01-01
Recommended Twist Rate:	1:12 - 1:10

Load data for 128 loads in caliber 8 x 57 IRS with .323 | 165gr | Frontier BTSP bullet and 64 powders such as Accurate 4064, IMR 3031, Lovex D073.6, Shooters World Match Rifle, Vihtavuori N540. 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. 27.1 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 2206H	<<locked>>	89%	43076	90%	**35	96%
ADI AR 2208	<<locked>>	94%	42960	90%	**12	95%
Accurate 2015	<<locked>>	85%	42931	90%	**79	100%
[Accurate 2200]*	<<locked>>	86%	42670	89%	**79	94%
Accurate 2230	<<locked>>	83%	42917	90%	**92	96%
Accurate 2460	<<locked>>	83%	42917	90%	**08	98%
Accurate 2495	<<locked>>	89%	42293	88%	**51	100%
Accurate 2520	<<locked>>	88%	43004	90%	**54	99%
Accurate 4064 👍	<<locked>>	95%	42786	89%	**67	99%
Alliant AR-Comp	<<locked>>	88%	43062	90%	**61	100%
Alliant Reloder- TS 15.5	<<locked>>	95%	42844	90%	**61	97%
Alliant Reloder-15	<<locked>>	92%	42482	89%	**51	95%
Alliant Reloder-17	<<locked>>	97%	39987	84%	**51	95%
[Baschieri & Pellagri 107]*	<<locked>>	89%	42975	90%	**41	94%
Hodgdon BL-C2	<<locked>>	88%	42859	90%	**67	97%
Hodgdon Benchmark	<<locked>>	85%	42511	89%	**52	98%
[Hodgdon CFE223]*	<<locked>>	93%	42641	89%	**71	94%
Hodgdon H322	<<locked>>	85%	42206	88%	**12	100%
[Hodgdon H380]*	<<locked>>	94%	42482	89%	**25	93%
Hodgdon VARGET	<<locked>>	94%	42366	89%	**02	95%
IMR 3031 👍	<<locked>>	92%	42308	88%	**77	100%
IMR 4064	<<locked>>	95%	42917	90%	**98	95%
IMR 4895	<<locked>>	92%	42743	89%	**71	96%
IMR 8208 XBR	<<locked>>	87%	42917	90%	**05	97%
Lovex D073.5	<<locked>>	83%	42598	89%	**05	98%
Lovex D073.6 👍	<<locked>>	90%	42699	89%	**51	99%
Lovex S060	<<locked>>	88%	42815	89%	**59	96%
Lovex S062	<<locked>>	93%	42960	90%	**25	97%
Norma 201	<<locked>>	90%	42946	90%	**12	97%
Norma 202	<<locked>>	89%	42656	89%	**25	99%
Norma 203B	<<locked>>	93%	42743	89%	**57	96%
Ramshot Big Game	<<locked>>	93%	42511	89%	**61	95%
[Ramshot TAC]*	<<locked>>	86%	42583	89%	**85	92%
Ramshot Wild Boar	<<locked>>	88%	42989	90%	**41	96%
Ramshot X-Terminator	<<locked>>	84%	42366	89%	**75	95%
ReloadSwiss RS 14	<<locked>>	96%	32314	68%	**80	100%
ReloadSwiss RS 52	<<locked>>	94%	42815	89%	**97	98%
ReloadSwiss RS 60	<<locked>>	97%	38914	81%	**35	95%
Rottweil R 901	<<locked>>	87%	43047	90%	**95	99%
Rottweil R 902	<<locked>>	91%	42293	88%	**89	97%
Rottweil R 903	<<locked>>	97%	41133	86%	**31	96%
SNPE Vectan SP 11	<<locked>>	96%	42786	89%	**71	95%
[SNPE Vectan SP 7]*	<<locked>>	88%	42598	89%	**95	93%
SNPE Vectan SP 9	<<locked>>	90%	42627	89%	**25	96%
SNPE Vectan Tubal 3000	<<locked>>	87%	42453	89%	**36	99%
SNPE Vectan Tubal 5000	<<locked>>	94%	42525	89%	**49	100%
Shooters World Match Rifle 👍	<<locked>>	90%	42699	89%	**51	99%
Shooters World Precision	<<locked>>	93%	42960	90%	**25	97%
Somchem S321	<<locked>>	84%	42453	89%	**21	97%
Somchem S335	<<locked>>	88%	42728	89%	**59	100%
Somchem S341	<<locked>>	89%	42975	90%	**18	95%
Somchem S355	<<locked>>	97%	42859	90%	**48	96%
[Somchem S365]*	<<locked>>	97%	30951	65%	**41	92%
Vihtavuori N130	<<locked>>	84%	42975	90%	**39	100%
Vihtavuori N133	<<locked>>	90%	42801	89%	**52	100%
Vihtavuori N135	<<locked>>	97%	40480	85%	**82	100%
Vihtavuori N140	<<locked>>	92%	42960	90%	**12	99%
Vihtavuori N150	<<locked>>	97%	36056	75%	**84	96%
Vihtavuori N530	<<locked>>	85%	42685	89%	**18	97%
Vihtavuori N540 👍	<<locked>>	92%	42482	89%	**28	99%
[Vihtavuori N550]*	<<locked>>	97%	38029	79%	**89	92%
[Winchester 6.5 StaBALL]*	<<locked>>	96%	37695	79%	**00	94%
Winchester 748	<<locked>>	85%	42946	90%	**67	98%
Winchester StaBALL Match	<<locked>>	83%	42163	88%	**35	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	81%	33692	70%	**31	92%
[ADI AR 2208]*	<<locked>>	84%	31807	66%	**62	90%
Accurate 2015	<<locked>>	81%	38406	80%	**90	100%
[Accurate 2200]*	<<locked>>	81%	35911	75%	**34	91%
Accurate 2230	<<locked>>	81%	39479	82%	**30	96%
Accurate 2460	<<locked>>	81%	39726	83%	**46	97%
Accurate 2495	<<locked>>	81%	32561	68%	**51	99%
Accurate 2520	<<locked>>	81%	33301	70%	**57	96%
Accurate 4064	<<locked>>	81%	27383	57%	**16	95%
Alliant AR-Comp	<<locked>>	81%	33823	71%	**84	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	81%	27224	57%	**87	90%
[Alliant Reloder-15]*	<<locked>>	82%	30879	65%	**82	90%
[Alliant Reloder-17]*	<<locked>>	89%	31531	66%	**38	90%
[Baschieri & Pellagri 107]*	<<locked>>	82%	33315	70%	**28	90%
[Hodgdon BL-C2]*	<<locked>>	81%	33605	70%	**74	94%
Hodgdon Benchmark	<<locked>>	81%	38029	79%	**67	96%
[Hodgdon CFE223]*	<<locked>>	87%	34330	72%	**80	90%
Hodgdon H322	<<locked>>	81%	37536	78%	**16	99%
[Hodgdon H380]*	<<locked>>	88%	34954	73%	**70	90%
[Hodgdon VARGET]*	<<locked>>	84%	31604	66%	**56	90%
IMR 3031	<<locked>>	81%	29573	62%	**85	98%
[IMR 4064]*	<<locked>>	84%	31067	65%	**43	90%
[IMR 4895]*	<<locked>>	81%	30342	63%	**79	91%
IMR 8208 XBR	<<locked>>	81%	35650	74%	**57	95%
Lovex D073.5	<<locked>>	81%	39450	82%	**39	97%
Lovex D073.6	<<locked>>	81%	31125	65%	**02	95%
[Lovex S060]*	<<locked>>	81%	35056	73%	**92	93%
[Lovex S062]*	<<locked>>	81%	29385	61%	**16	92%
[Norma 201]*	<<locked>>	81%	32996	69%	**98	94%
Norma 202	<<locked>>	81%	32735	68%	**15	97%
[Norma 203B]*	<<locked>>	81%	29211	61%	**39	90%
[Ramshot Big Game]*	<<locked>>	83%	31241	65%	**95	90%
[Ramshot TAC]*	<<locked>>	83%	37536	78%	**80	90%
[Ramshot Wild Boar]*	<<locked>>	81%	34403	72%	**61	93%
[Ramshot X-Terminator]*	<<locked>>	81%	38798	81%	**00	94%
ReloadSwiss RS 14	<<locked>>	93%	30777	64%	**50	100%
[ReloadSwiss RS 52]*	<<locked>>	81%	27804	58%	**39	92%
[ReloadSwiss RS 60]*	<<locked>>	89%	30850	64%	**11	90%
Rottweil R 901	<<locked>>	81%	36376	76%	**61	98%
[Rottweil R 902]*	<<locked>>	81%	31343	65%	**43	93%
[Rottweil R 903]*	<<locked>>	84%	27180	57%	**00	90%
[SNPE Vectan SP 11]*	<<locked>>	86%	30792	64%	**92	90%
[SNPE Vectan SP 7]*	<<locked>>	83%	35259	74%	**44	90%
[SNPE Vectan SP 9]*	<<locked>>	81%	32329	68%	**95	92%
SNPE Vectan Tubal 3000	<<locked>>	81%	35143	73%	**88	97%
SNPE Vectan Tubal 5000	<<locked>>	81%	28311	59%	**47	96%
Shooters World Match Rifle	<<locked>>	81%	31125	65%	**02	95%
[Shooters World Precision]*	<<locked>>	81%	29385	61%	**16	92%
Somchem S321	<<locked>>	81%	37971	79%	**33	96%
Somchem S335	<<locked>>	81%	34330	72%	**88	98%
[Somchem S341]*	<<locked>>	81%	33214	69%	**05	92%
[Somchem S355]*	<<locked>>	83%	28152	59%	**03	90%
[Somchem S365]*	<<locked>>	93%	27760	58%	**43	90%
Vihtavuori N130	<<locked>>	81%	39088	82%	**70	100%
Vihtavuori N133	<<locked>>	81%	32692	68%	**52	99%
Vihtavuori N135	<<locked>>	81%	25077	52%	**21	96%
Vihtavuori N140	<<locked>>	81%	30414	64%	**43	96%
[Vihtavuori N150]*	<<locked>>	85%	25019	52%	**98	90%
Vihtavuori N530	<<locked>>	81%	37130	78%	**07	96%
Vihtavuori N540	<<locked>>	81%	30226	63%	**59	96%
[Vihtavuori N550]*	<<locked>>	94%	34664	72%	**10	90%
[Winchester 6.5 StaBALL]*	<<locked>>	90%	31067	65%	**33	90%
Winchester 748	<<locked>>	81%	36767	77%	**43	96%
Winchester StaBALL Match	<<locked>>	81%	39334	82%	**82	95%

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.