Load data for .375 Raptor + .375 | 250gr | Sierra SBT GameKing

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.375 \| 250gr \| Sierra SBT GameKing
Manufacturer SKU:	2950
Bullet Weight:	250gr \| 16.2g
Bullet Diameter:	0.375" \| 9.52mm
Bullet Length:	<<locked>>
Caliber:	.375 Raptor load data
Case Length (l3):	1.865" \| 47.4mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	60.0 Grains of Water \| 3.90 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	58015 psi \| 4000 bar
LID:	LID_B5957_C556
Last updated:	2026-02-13
Recommended Twist Rate:	1:20 - 1:16

Load data for 120 loads in caliber .375 Raptor with .375 | 250gr | Sierra SBT GameKing bullet and 60 powder(s). 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>>	97%	41263	71%	**74	93%
ADI AR 2207	<<locked>>	91%	52127	90%	**56	100%
ADI AR 2219 👍	<<locked>>	94%	51300	88%	**28	100%
Accurate 2015 👍	<<locked>>	97%	46615	80%	**23	100%
[Accurate 2200]*	<<locked>>	97%	45252	78%	**80	91%
Accurate 2230	<<locked>>	97%	50836	88%	**79	96%
Accurate 2460	<<locked>>	97%	50241	87%	**92	98%
Accurate 2495	<<locked>>	97%	37579	65%	**80	99%
Accurate 2520	<<locked>>	97%	40263	69%	**00	96%
Accurate 4064	<<locked>>	97%	31009	53%	**49	95%
Alliant AR-Comp	<<locked>>	97%	41104	71%	**20	100%
Alliant Reloder-10x	<<locked>>	96%	50966	88%	**88	100%
Alliant Reloder-7	<<locked>>	90%	52069	90%	**46	100%
Baschieri & Pellagri 106 👍	<<locked>>	94%	52040	90%	**36	100%
[Hodgdon BL-C2]*	<<locked>>	97%	41727	72%	**23	94%
Hodgdon Benchmark	<<locked>>	97%	47790	82%	**10	97%
Hodgdon CFE BLK	<<locked>>	90%	51735	89%	**26	97%
Hodgdon H322	<<locked>>	97%	46557	80%	**56	99%
Hodgdon H335 👍	<<locked>>	94%	51314	88%	**31	99%
Hodgdon H4198	<<locked>>	91%	51068	88%	**10	99%
[Hodgdon H4895]*	<<locked>>	97%	41307	71%	**87	94%
IMR 3031	<<locked>>	97%	35491	61%	**31	98%
IMR 4198	<<locked>>	96%	51895	89%	**56	100%
IMR 4227	<<locked>>	85%	51880	89%	**87	100%
IMR 8208 XBR	<<locked>>	97%	44048	76%	**97	95%
Lovex D073.4	<<locked>>	96%	52098	90%	**05	98%
Lovex D073.5	<<locked>>	97%	49661	86%	**85	98%
Lovex D073.6	<<locked>>	97%	37913	65%	**57	96%
Lovex S053	<<locked>>	86%	51547	89%	**51	100%
[Lovex S060]*	<<locked>>	97%	43410	75%	**31	93%
[Lovex S062]*	<<locked>>	97%	34925	60%	**62	93%
Norma 200	<<locked>>	93%	51561	89%	**82	100%
[Norma 201]*	<<locked>>	97%	39726	68%	**34	94%
Norma 202	<<locked>>	96%	39218	68%	**54	97%
[Ramshot Wild Boar]*	<<locked>>	96%	42612	73%	**00	93%
Ramshot X-Terminator	<<locked>>	97%	49037	85%	**46	95%
ReloadSwiss RS 36	<<locked>>	85%	51822	89%	**23	100%
ReloadSwiss RS 40	<<locked>>	96%	49821	86%	**85	98%
Rottweil R 901	<<locked>>	96%	43584	75%	**83	98%
[Rottweil R 902]*	<<locked>>	97%	37898	65%	**92	94%
SNPE Vectan BA6 1/2	<<locked>>	89%	51039	88%	**13	100%
SNPE Vectan SP 10 👍	<<locked>>	94%	51822	89%	**31	99%
[SNPE Vectan SP 9]*	<<locked>>	96%	39581	68%	**41	92%
SNPE Vectan Tubal 3000	<<locked>>	97%	43845	76%	**31	98%
SNPE Vectan Tubal 5000	<<locked>>	97%	35027	60%	**03	97%
Shooters World Match Rifle	<<locked>>	97%	37913	65%	**57	96%
[Shooters World Precision]*	<<locked>>	97%	34925	60%	**62	93%
Shooters World Tactical Rifle	<<locked>>	95%	51430	89%	**59	96%
Somchem S321	<<locked>>	97%	47776	82%	**82	97%
Somchem S335	<<locked>>	97%	41698	72%	**28	98%
[Somchem S341]*	<<locked>>	97%	41858	72%	**64	92%
Vihtavuori N120	<<locked>>	93%	51634	89%	**06	100%
Vihtavuori N130	<<locked>>	97%	48037	83%	**00	100%
Vihtavuori N133	<<locked>>	96%	39102	67%	**82	99%
Vihtavuori N135	<<locked>>	97%	29269	50%	**60	96%
Vihtavuori N140	<<locked>>	96%	36811	63%	**88	97%
Vihtavuori N530	<<locked>>	97%	47079	81%	**56	96%
Vihtavuori N540	<<locked>>	97%	36535	63%	**05	96%
Winchester 748	<<locked>>	97%	46514	80%	**92	97%
Winchester StaBALL Match	<<locked>>	97%	50952	88%	**34	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	91%	34447	59%	**49	90%
ADI AR 2207	<<locked>>	81%	38087	66%	**62	100%
ADI AR 2219	<<locked>>	81%	33547	58%	**33	96%
Accurate 2015	<<locked>>	81%	28485	49%	**05	97%
[Accurate 2200]*	<<locked>>	94%	41829	72%	**28	90%
[Accurate 2230]*	<<locked>>	84%	32140	55%	**73	90%
[Accurate 2460]*	<<locked>>	81%	28892	50%	**21	91%
[Accurate 2495]*	<<locked>>	81%	22365	39%	**39	94%
[Accurate 2520]*	<<locked>>	83%	25730	44%	**91	90%
[Accurate 4064]*	<<locked>>	86%	22249	38%	**26	90%
Alliant AR-Comp	<<locked>>	81%	25266	44%	**82	98%
Alliant Reloder-10x	<<locked>>	81%	31575	54%	**80	99%
Alliant Reloder-7	<<locked>>	81%	39421	68%	**65	100%
Baschieri & Pellagri 106	<<locked>>	81%	34447	59%	**64	97%
[Hodgdon BL-C2]*	<<locked>>	88%	31096	54%	**13	90%
[Hodgdon Benchmark]*	<<locked>>	81%	29515	51%	**75	91%
[Hodgdon CFE BLK]*	<<locked>>	81%	38798	67%	**26	94%
[Hodgdon H322]*	<<locked>>	81%	28558	49%	**21	94%
Hodgdon H335	<<locked>>	81%	32503	56%	**19	95%
Hodgdon H4198	<<locked>>	81%	37869	65%	**10	97%
[Hodgdon H4895]*	<<locked>>	89%	32677	56%	**19	90%
[IMR 3031]*	<<locked>>	81%	22466	39%	**93	91%
IMR 4198	<<locked>>	81%	33939	59%	**77	99%
IMR 4227	<<locked>>	81%	45716	79%	**05	100%
[IMR 8208 XBR]*	<<locked>>	85%	30516	53%	**37	90%
[Lovex D073.4]*	<<locked>>	81%	30400	52%	**41	92%
[Lovex D073.5]*	<<locked>>	81%	28660	49%	**21	91%
[Lovex D073.6]*	<<locked>>	85%	25730	44%	**91	90%
Lovex S053	<<locked>>	81%	44715	77%	**69	100%
[Lovex S060]*	<<locked>>	89%	35114	61%	**87	90%
[Lovex S062]*	<<locked>>	91%	29878	52%	**54	90%
Norma 200	<<locked>>	81%	36056	62%	**49	100%
[Norma 201]*	<<locked>>	88%	30182	52%	**41	90%
[Norma 202]*	<<locked>>	81%	24468	42%	**26	91%
[Ramshot Wild Boar]*	<<locked>>	91%	35766	62%	**72	90%
[Ramshot X-Terminator]*	<<locked>>	87%	36245	62%	**29	90%
ReloadSwiss RS 36	<<locked>>	81%	45034	78%	**34	100%
[ReloadSwiss RS 40]*	<<locked>>	81%	30298	52%	**44	92%
[Rottweil R 901]*	<<locked>>	81%	27862	48%	**75	92%
[Rottweil R 902]*	<<locked>>	89%	29849	51%	**28	90%
SNPE Vectan BA6 1/2	<<locked>>	81%	41669	72%	**98	100%
SNPE Vectan SP 10	<<locked>>	81%	33605	58%	**33	95%
[SNPE Vectan SP 9]*	<<locked>>	93%	35215	61%	**56	90%
[SNPE Vectan Tubal 3000]*	<<locked>>	81%	26731	46%	**06	92%
[SNPE Vectan Tubal 5000]*	<<locked>>	82%	22249	38%	**98	90%
[Shooters World Match Rifle]*	<<locked>>	85%	25730	44%	**91	90%
[Shooters World Precision]*	<<locked>>	91%	29878	52%	**54	90%
[Shooters World Tactical Rifle]*	<<locked>>	81%	32387	56%	**47	90%
[Somchem S321]*	<<locked>>	82%	29298	51%	**41	90%
[Somchem S335]*	<<locked>>	81%	26092	45%	**16	93%
[Somchem S341]*	<<locked>>	93%	36521	63%	**69	90%
Vihtavuori N120	<<locked>>	81%	35563	61%	**83	100%
Vihtavuori N130	<<locked>>	81%	30269	52%	**05	98%
Vihtavuori N133	<<locked>>	81%	25092	43%	**90	95%
[Vihtavuori N135]*	<<locked>>	83%	20262	35%	**01	90%
[Vihtavuori N140]*	<<locked>>	82%	23989	41%	**90	90%
[Vihtavuori N530]*	<<locked>>	83%	29979	52%	**41	90%
[Vihtavuori N540]*	<<locked>>	83%	24598	42%	**26	90%
[Winchester 748]*	<<locked>>	83%	29472	51%	**57	90%
[Winchester StaBALL Match]*	<<locked>>	85%	33852	58%	**42	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.

<<locked>>... you need to buy an access license to unlock the data