Load data for 6.5 x 52 R + .257 | 120gr | Sierra HPBT GameKing

Recommended Powder(s): Accurate 2495, Vihtavuori N135

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 120gr \| Sierra HPBT GameKing
Manufacturer SKU:	1650
Bullet Weight:	120gr \| 7.8g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.170" \| 29.7mm
Caliber:	6.5 x 52 R load data
Case Length (l3):	2.047" \| 52.0mm
Cartridge Length (C.O.L.):	2.502" \| 63.5mm
Seated Depth:	0.715" \| 18.2mm
Shank Seated Depth:	0.570" \| 14.5mm
Case Capacity:	37.0 Grains of Water \| 2.40 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	35534 psi \| 2450 bar
LID:	LID_B5799_C1008
Last updated:	2025-01-01
Recommended Twist Rate:	1:10 - 1:8

Load data for 48 loads in caliber 6.5 x 52 R with .257 | 120gr | Sierra HPBT GameKing bullet and 24 powders such as Accurate 2495, Vihtavuori N135. 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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Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
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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
Accurate 2495 👍	<<locked>>	85%	31502	89%	**82	99%
Accurate 2520	<<locked>>	83%	31198	88%	**59	95%
Accurate 4064	<<locked>>	90%	30777	87%	**65	97%
[Alliant Reloder- TS 15.5]*	<<locked>>	90%	31720	89%	**59	93%
[Hodgdon BL-C2]*	<<locked>>	83%	31459	89%	**65	93%
IMR 3031	<<locked>>	87%	31865	90%	**92	98%
[IMR 4895]*	<<locked>>	86%	31212	88%	**56	91%
Lovex D073.6	<<locked>>	86%	31836	90%	**72	96%
[Lovex S062]*	<<locked>>	87%	31546	89%	**26	93%
[Norma 201]*	<<locked>>	83%	31618	89%	**13	93%
Norma 202	<<locked>>	84%	31546	89%	**33	96%
[ReloadSwiss RS 52]*	<<locked>>	89%	31546	89%	**85	94%
[Rottweil R 902]*	<<locked>>	85%	31241	88%	**93	93%
[Rottweil R 903]*	<<locked>>	93%	31517	89%	**65	92%
[SNPE Vectan SP 9]*	<<locked>>	84%	31923	90%	**29	91%
SNPE Vectan Tubal 5000	<<locked>>	88%	31183	88%	**67	97%
Shooters World Match Rifle	<<locked>>	86%	31836	90%	**72	96%
[Shooters World Precision]*	<<locked>>	87%	31546	89%	**26	93%
[Somchem S355]*	<<locked>>	91%	30980	87%	**36	92%
Vihtavuori N133	<<locked>>	83%	31372	88%	**70	99%
Vihtavuori N135 👍	<<locked>>	93%	31560	89%	**46	99%
Vihtavuori N140	<<locked>>	86%	31444	88%	**19	97%
[Vihtavuori N150]*	<<locked>>	96%	30966	87%	**19	94%
Vihtavuori N540	<<locked>>	85%	30748	87%	**23	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
Accurate 2495	<<locked>>	81%	28021	79%	**00	98%
[Accurate 2520]*	<<locked>>	81%	28718	81%	**03	94%
[Accurate 4064]*	<<locked>>	81%	23627	66%	**85	93%
[Alliant Reloder- TS 15.5]*	<<locked>>	85%	27166	76%	**47	90%
[Hodgdon BL-C2]*	<<locked>>	81%	29153	82%	**10	92%
IMR 3031	<<locked>>	81%	26237	74%	**51	96%
[IMR 4895]*	<<locked>>	83%	28979	82%	**00	90%
[Lovex D073.6]*	<<locked>>	81%	27064	76%	**64	94%
[Lovex S062]*	<<locked>>	81%	26107	73%	**91	90%
[Norma 201]*	<<locked>>	81%	29356	83%	**57	92%
Norma 202	<<locked>>	81%	29167	82%	**83	95%
[ReloadSwiss RS 52]*	<<locked>>	83%	26397	74%	**51	90%
[Rottweil R 902]*	<<locked>>	81%	27876	78%	**14	91%
[Rottweil R 903]*	<<locked>>	89%	27876	78%	**87	91%
[SNPE Vectan SP 9]*	<<locked>>	82%	29704	84%	**77	90%
SNPE Vectan Tubal 5000	<<locked>>	81%	25744	72%	**36	95%
[Shooters World Match Rifle]*	<<locked>>	81%	27064	76%	**64	94%
[Shooters World Precision]*	<<locked>>	81%	26107	73%	**91	90%
[Somchem S355]*	<<locked>>	87%	27731	78%	**57	90%
Vihtavuori N133	<<locked>>	81%	29022	82%	**21	98%
[Vihtavuori N135]*	<<locked>>	81%	22176	62%	**03	94%
Vihtavuori N140	<<locked>>	81%	27064	76%	**11	95%
[Vihtavuori N150]*	<<locked>>	88%	24889	70%	**62	90%
[Vihtavuori N540]*	<<locked>>	81%	26513	75%	**18	94%

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.