Load data for 7 x 57 R + .284 | 170gr | Sierra RN Prohunter

Recommended Powder(s): Alliant Reloder-16, IMR 4831, Norma URP, ReloadSwiss RS 62, ReloadSwiss RS 70

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.284 \| 170gr \| Sierra RN Prohunter
Manufacturer SKU:	1950
Bullet Weight:	170gr \| 11.0g
Bullet Diameter:	0.284" \| 7.21mm
Bullet Length:	1.225" \| 31.1mm
Caliber:	7 x 57 R load data
Case Length (l3):	2.244" \| 57.0mm
Cartridge Length (C.O.L.):	3.025" \| 76.8mm
Seated Depth:	0.444" \| 11.3mm
Shank Seated Depth:	0.444" \| 11.3mm
Case Capacity:	60.0 Grains of Water \| 3.90 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	49313 psi \| 3400 bar
LID:	LID_B5851_C1089
Last updated:	2025-02-02

Load data for 110 loads in caliber 7 x 57 R with .284 | 170gr | Sierra RN Prohunter bullet and 55 powders such as Alliant Reloder-16, IMR 4831, Norma URP, ReloadSwiss RS 62, ReloadSwiss RS 70. 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)
No data yet
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 2209	<<locked>>	94%	43613	88%	**64	95%
[ADI AR 2213]*	<<locked>>	97%	42511	86%	**57	92%
Accurate 2700	<<locked>>	83%	44135	90%	**56	96%
Accurate 3100	<<locked>>	97%	40466	82%	**02	97%
Accurate 4350	<<locked>>	89%	43540	88%	**64	99%
Alliant Reloder-16 👍	<<locked>>	90%	43642	89%	**97	99%
Alliant Reloder-17	<<locked>>	86%	44034	89%	**23	100%
Alliant Reloder-19	<<locked>>	95%	44237	90%	**80	95%
[Alliant Reloder-22]*	<<locked>>	97%	40988	83%	**61	94%
Alliant Reloder-23	<<locked>>	96%	38392	78%	**25	99%
Alliant Reloder-25	<<locked>>	96%	33779	69%	**20	95%
Alliant Reloder-26	<<locked>>	97%	43033	87%	**72	99%
Hodgdon H414	<<locked>>	85%	44048	89%	**77	97%
Hodgdon H4350	<<locked>>	91%	43845	89%	**18	96%
[Hodgdon H4831 SC]*	<<locked>>	96%	43627	88%	**41	92%
Hodgdon Hybrid 100V	<<locked>>	92%	43482	88%	**41	100%
Hodgdon LVR	<<locked>>	87%	44121	89%	**64	99%
Hodgdon Superperformance	<<locked>>	88%	43685	89%	**93	96%
IMR 4350	<<locked>>	89%	43758	89%	**15	96%
IMR 4451 Enduron	<<locked>>	84%	43555	88%	**88	97%
IMR 4831 👍	<<locked>>	94%	43845	89%	**57	99%
[IMR 4955 Enduron]*	<<locked>>	97%	44382	90%	**21	93%
[IMR 7828 SSC]*	<<locked>>	96%	42801	87%	**77	92%
Lovex S065	<<locked>>	87%	43772	89%	**98	98%
Lovex S070	<<locked>>	89%	44324	90%	**25	97%
Lovex S071	<<locked>>	96%	33359	68%	**57	95%
Norma 204	<<locked>>	90%	44367	90%	**61	95%
Norma MRP	<<locked>>	97%	42960	87%	**33	96%
Norma URP 👍	<<locked>>	90%	44164	90%	**74	99%
Ramshot Hunter	<<locked>>	91%	44135	89%	**90	98%
[Ramshot Magnum]*	<<locked>>	97%	39233	80%	**08	94%
ReloadSwiss RS 60	<<locked>>	87%	44353	90%	**46	100%
ReloadSwiss RS 62 👍	<<locked>>	90%	44353	90%	**03	99%
ReloadSwiss RS 70 👍	<<locked>>	90%	43830	89%	**23	99%
Rottweil R 903	<<locked>>	84%	44179	90%	**28	100%
[Rottweil R 904]*	<<locked>>	93%	43918	89%	**21	93%
Rottweil R 905	<<locked>>	96%	44005	89%	**80	95%
Rottweil R 907	<<locked>>	85%	43482	88%	**88	96%
SNPE Vectan SP 11	<<locked>>	83%	44150	90%	**57	100%
SNPE Vectan Tubal 7000	<<locked>>	87%	44324	90%	**69	97%
Shooters World Long Rifle	<<locked>>	87%	43772	89%	**98	98%
Somchem S355	<<locked>>	83%	43743	89%	**11	100%
[Somchem S361]*	<<locked>>	92%	44005	89%	**95	92%
Somchem S365	<<locked>>	93%	44237	90%	**13	100%
Somchem S385	<<locked>>	95%	43439	88%	**41	96%
Vihtavuori N135	<<locked>>	84%	43859	89%	**49	100%
Vihtavuori N150	<<locked>>	89%	43903	89%	**82	100%
Vihtavuori N160	<<locked>>	87%	44019	89%	**34	99%
[Vihtavuori N165]*	<<locked>>	97%	38798	79%	**43	94%
Vihtavuori N550	<<locked>>	87%	43961	89%	**70	99%
Vihtavuori N555	<<locked>>	97%	42453	86%	**90	99%
[Vihtavuori N560]*	<<locked>>	97%	41176	84%	**74	92%
Winchester 6.5 StaBALL	<<locked>>	89%	43671	89%	**21	100%
Winchester 760	<<locked>>	85%	44048	89%	**77	97%
Winchester StaBALL HD	<<locked>>	97%	34563	70%	**41	100%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2209]*	<<locked>>	86%	33489	68%	**44	90%
[ADI AR 2213]*	<<locked>>	94%	38406	78%	**72	90%
Accurate 2700	<<locked>>	81%	40683	82%	**93	95%
[Accurate 3100]*	<<locked>>	83%	25295	51%	**54	90%
Accurate 4350	<<locked>>	81%	32793	67%	**57	97%
Alliant Reloder-16	<<locked>>	81%	32866	67%	**67	97%
Alliant Reloder-17	<<locked>>	81%	36579	74%	**79	99%
[Alliant Reloder-19]*	<<locked>>	85%	32300	65%	**21	90%
[Alliant Reloder-22]*	<<locked>>	89%	32184	65%	**64	90%
[Alliant Reloder-23]*	<<locked>>	81%	23801	48%	**37	93%
[Alliant Reloder-25]*	<<locked>>	89%	26803	54%	**26	90%
[Alliant Reloder-26]*	<<locked>>	81%	24918	51%	**13	90%
Hodgdon H414	<<locked>>	81%	38232	78%	**62	95%
[Hodgdon H4350]*	<<locked>>	81%	31981	65%	**72	92%
[Hodgdon H4831 SC]*	<<locked>>	92%	38740	79%	**43	90%
Hodgdon Hybrid 100V	<<locked>>	81%	30560	62%	**82	97%
Hodgdon LVR	<<locked>>	81%	35984	73%	**06	97%
[Hodgdon Superperformance]*	<<locked>>	81%	34258	69%	**97	93%
[IMR 4350]*	<<locked>>	81%	33794	69%	**15	93%
IMR 4451 Enduron	<<locked>>	81%	39450	80%	**06	95%
IMR 4831	<<locked>>	81%	28863	59%	**46	95%
[IMR 4955 Enduron]*	<<locked>>	91%	37304	76%	**77	90%
[IMR 7828 SSC]*	<<locked>>	93%	37985	77%	**75	90%
Lovex S065	<<locked>>	81%	36550	74%	**57	96%
[Lovex S070]*	<<locked>>	81%	34940	71%	**41	94%
[Lovex S071]*	<<locked>>	88%	25295	51%	**54	90%
[Norma 204]*	<<locked>>	81%	32721	66%	**18	90%
[Norma MRP]*	<<locked>>	85%	29428	60%	**11	90%
Norma URP	<<locked>>	81%	33011	67%	**54	96%
[Ramshot Hunter]*	<<locked>>	81%	32155	65%	**41	94%
[Ramshot Magnum]*	<<locked>>	92%	32489	66%	**51	90%
ReloadSwiss RS 60	<<locked>>	81%	35636	72%	**69	100%
ReloadSwiss RS 62	<<locked>>	81%	32532	66%	**74	96%
ReloadSwiss RS 70	<<locked>>	81%	32474	66%	**74	95%
Rottweil R 903	<<locked>>	81%	39871	81%	**49	100%
[Rottweil R 904]*	<<locked>>	86%	35114	71%	**47	90%
[Rottweil R 905]*	<<locked>>	85%	31647	64%	**21	90%
[Rottweil R 907]*	<<locked>>	81%	37884	77%	**77	94%
SNPE Vectan SP 11	<<locked>>	81%	40799	83%	**95	99%
SNPE Vectan Tubal 7000	<<locked>>	81%	36201	73%	**18	95%
Shooters World Long Rifle	<<locked>>	81%	36550	74%	**57	96%
Somchem S355	<<locked>>	81%	40263	82%	**46	100%
[Somchem S361]*	<<locked>>	88%	38319	78%	**90	90%
Somchem S365	<<locked>>	81%	29805	60%	**18	99%
[Somchem S385]*	<<locked>>	83%	29457	60%	**52	90%
Vihtavuori N135	<<locked>>	81%	39552	80%	**80	100%
Vihtavuori N150	<<locked>>	81%	34853	71%	**21	99%
Vihtavuori N160	<<locked>>	81%	35752	72%	**83	97%
[Vihtavuori N165]*	<<locked>>	89%	30574	62%	**62	90%
Vihtavuori N550	<<locked>>	81%	36564	74%	**26	97%
[Vihtavuori N555]*	<<locked>>	81%	25614	52%	**10	94%
[Vihtavuori N560]*	<<locked>>	94%	38029	77%	**05	90%
Winchester 6.5 StaBALL	<<locked>>	81%	33910	69%	**31	99%
Winchester 760	<<locked>>	81%	38232	78%	**62	95%
[Winchester StaBALL HD]*	<<locked>>	82%	21741	44%	**08	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.