Load data for 6.5 x 52 R + .257 | 90gr | Sierra HPBT GameKing

Recommended Powder(s): Alliant AR-Comp

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 90gr \| Sierra HPBT GameKing
Manufacturer SKU:	1615
Bullet Weight:	90gr \| 5.8g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	0.890" \| 22.6mm
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:	0.435" \| 11.1mm
Shank Seated Depth:	0.295" \| 7.5mm
Case Capacity:	37.0 Grains of Water \| 2.40 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	35534 psi \| 2450 bar
LID:	LID_B5791_C1008
Last updated:	2025-02-02
Recommended Twist Rate:	1:13 - 1:11

Load data for 40 loads in caliber 6.5 x 52 R with .257 | 90gr | Sierra HPBT GameKing bullet and 20 powders such as Alliant AR-Comp. 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. 25.8 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
Accurate 2015	<<locked>>	83%	31894	90%	**84	97%
Accurate 2495	<<locked>>	90%	31966	90%	**79	97%
[Accurate 2520]*	<<locked>>	88%	31691	89%	**36	92%
[Accurate 4064]*	<<locked>>	95%	31734	89%	**56	94%
Alliant AR-Comp 👍	<<locked>>	87%	31212	88%	**39	99%
[Hodgdon H322]*	<<locked>>	83%	31546	89%	**93	94%
Hodgdon TrailBoss	<<locked>>	97%	30893	87%	**96	100%
IMR 3031	<<locked>>	91%	31589	89%	**49	95%
[Lovex D073.6]*	<<locked>>	89%	31067	87%	**23	92%
[Norma 202]*	<<locked>>	87%	30937	87%	**90	93%
ReloadSwiss RS 14	<<locked>>	97%	30690	86%	**32	100%
[Rottweil R 901]*	<<locked>>	84%	31894	90%	**70	93%
[SNPE Vectan Tubal 3000]*	<<locked>>	85%	31865	90%	**18	93%
[SNPE Vectan Tubal 5000]*	<<locked>>	92%	31560	89%	**25	94%
[Shooters World Match Rifle]*	<<locked>>	89%	31067	87%	**23	92%
[Somchem S335]*	<<locked>>	86%	31415	88%	**28	94%
Vihtavuori N133	<<locked>>	88%	31966	90%	**48	97%
Vihtavuori N135	<<locked>>	97%	31140	88%	**07	96%
[Vihtavuori N140]*	<<locked>>	90%	31575	89%	**77	94%
[Vihtavuori N540]*	<<locked>>	90%	31082	87%	**87	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
Accurate 2015	<<locked>>	81%	29834	84%	**28	96%
[Accurate 2495]*	<<locked>>	81%	23873	67%	**46	93%
[Accurate 2520]*	<<locked>>	85%	28529	80%	**48	90%
[Accurate 4064]*	<<locked>>	88%	24787	70%	**62	90%
Alliant AR-Comp	<<locked>>	81%	26382	74%	**02	97%
[Hodgdon H322]*	<<locked>>	81%	29675	84%	**38	93%
Hodgdon TrailBoss	<<locked>>	94%	29457	83%	**67	100%
[IMR 3031]*	<<locked>>	82%	24163	68%	**13	91%
[Lovex D073.6]*	<<locked>>	86%	28108	79%	**38	90%
[Norma 202]*	<<locked>>	82%	26194	74%	**49	90%
ReloadSwiss RS 14	<<locked>>	87%	26658	75%	**47	100%
[Rottweil R 901]*	<<locked>>	81%	29008	82%	**85	91%
[SNPE Vectan Tubal 3000]*	<<locked>>	81%	27833	78%	**10	91%
[SNPE Vectan Tubal 5000]*	<<locked>>	83%	24163	68%	**15	90%
[Shooters World Match Rifle]*	<<locked>>	86%	28108	79%	**38	90%
[Somchem S335]*	<<locked>>	81%	27456	77%	**23	92%
[Vihtavuori N133]*	<<locked>>	81%	26078	73%	**83	94%
[Vihtavuori N135]*	<<locked>>	85%	22350	63%	**31	90%
[Vihtavuori N140]*	<<locked>>	83%	25875	73%	**13	90%
[Vihtavuori N540]*	<<locked>>	85%	27282	77%	**79	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.