Load data for .257 Roberts + .257 | 100gr | Barnes TTSX BT

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 100gr \| Barnes TTSX BT
Manufacturer SKU:	30220
Bullet Weight:	100gr \| 6.5g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	<<locked>>
Caliber:	.257 Roberts load data
Case Length (l3):	2.233" \| 56.7mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	51488 psi \| 3550 bar
LID:	LID_B495_C241
Last updated:	2026-03-24
Recommended Twist Rate:	1:9 - 1:8

Load data for 152 loads in caliber .257 Roberts with .257 | 100gr | Barnes TTSX BT bullet and 76 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".

Go to the bottom of the "Dashboard " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
We recommend you limit powder range to relevant brands to speed up re-calculation of results
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.
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>>	84%	45687	89%	**87	98%
ADI AR 2208	<<locked>>	89%	45571	89%	**71	98%
Accurate 2495	<<locked>>	84%	46166	90%	**94	100%
Accurate 2520	<<locked>>	83%	46021	89%	**94	100%
[Accurate 2700]*	<<locked>>	90%	45672	89%	**95	93%
Accurate 4064	<<locked>>	89%	45701	89%	**94	100%
Accurate 4350	<<locked>>	97%	44179	86%	**23	97%
Alliant Power Pro 2000-MR	<<locked>>	87%	46224	90%	**15	98%
Alliant Reloder- TS 15.5 👍	<<locked>>	90%	45832	89%	**10	99%
Alliant Reloder-15	<<locked>>	88%	46180	90%	**17	98%
Alliant Reloder-16	<<locked>>	96%	43700	85%	**33	97%
Alliant Reloder-17	<<locked>>	94%	46311	90%	**22	99%
[Alliant Reloder-23]*	<<locked>>	96%	30589	59%	**15	93%
Baschieri & Pellagri 107	<<locked>>	84%	45658	89%	**04	97%
Bofors RP3 👍	<<locked>>	90%	46180	90%	**20	99%
[Bofors RP7]*	<<locked>>	93%	45934	89%	**54	93%
Hodgdon CFE223	<<locked>>	88%	45788	89%	**46	97%
Hodgdon H380	<<locked>>	89%	45600	89%	**90	96%
[Hodgdon H414]*	<<locked>>	93%	45774	89%	**49	94%
[Hodgdon H4350]*	<<locked>>	96%	42409	82%	**08	92%
Hodgdon H4895	<<locked>>	84%	46050	89%	**04	99%
Hodgdon Hybrid 100V	<<locked>>	96%	39900	78%	**08	97%
Hodgdon LVR	<<locked>>	95%	45397	88%	**33	96%
[Hodgdon Superperformance]*	<<locked>>	95%	45687	89%	**43	93%
Hodgdon VARGET	<<locked>>	90%	46180	90%	**81	98%
Hodgdon TrailBoss	<<locked>>	96%	32953	64%	**27	100%
IMR 3031	<<locked>>	87%	45905	89%	**10	100%
IMR 4064	<<locked>>	90%	45861	89%	**71	98%
[IMR 4166 Enduron]*	<<locked>>	90%	45687	89%	**22	94%
[IMR 4350]*	<<locked>>	97%	45078	88%	**61	93%
[IMR 4451 Enduron]*	<<locked>>	92%	46166	90%	**64	94%
IMR 4831	<<locked>>	97%	37550	73%	**62	95%
IMR 4895	<<locked>>	87%	46093	90%	**33	98%
Lovex D073.6	<<locked>>	85%	45353	88%	**90	100%
Lovex S060	<<locked>>	84%	45905	89%	**31	98%
Lovex S062	<<locked>>	88%	46108	90%	**87	99%
Lovex S065	<<locked>>	94%	45426	88%	**58	95%
[Lovex S070]*	<<locked>>	96%	45788	89%	**81	94%
Norma 201	<<locked>>	85%	45658	89%	**64	99%
Norma 202	<<locked>>	85%	46050	89%	**77	100%
Norma 203B	<<locked>>	88%	45382	88%	**04	98%
Norma URP	<<locked>>	97%	44338	86%	**27	97%
Ramshot Big Game	<<locked>>	88%	45339	88%	**27	98%
[Ramshot Hunter]*	<<locked>>	97%	43874	85%	**13	94%
ReloadSwiss RS 14	<<locked>>	95%	32895	64%	**64	100%
ReloadSwiss RS 50	<<locked>>	89%	45963	89%	**74	95%
ReloadSwiss RS 52	<<locked>>	86%	46035	89%	**89	98%
ReloadSwiss RS 60 👍	<<locked>>	92%	46311	90%	**35	100%
ReloadSwiss RS 62	<<locked>>	97%	44077	86%	**49	96%
ReloadSwiss RS 70	<<locked>>	97%	45150	88%	**72	96%
Rottweil R 902	<<locked>>	87%	46151	90%	**64	99%
Rottweil R 903 👍	<<locked>>	92%	45426	88%	**00	99%
[Rottweil R 907]*	<<locked>>	93%	45934	89%	**54	93%
SNPE Vectan SP 11	<<locked>>	91%	45629	89%	**33	98%
SNPE Vectan SP 7	<<locked>>	84%	45614	89%	**64	96%
SNPE Vectan SP 9	<<locked>>	85%	45977	89%	**90	98%
SNPE Vectan Tubal 3000	<<locked>>	83%	45179	88%	**79	100%
SNPE Vectan Tubal 5000	<<locked>>	89%	45310	88%	**89	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	94%	45745	89%	**15	94%
Shooters World Long Rifle	<<locked>>	94%	45426	88%	**58	95%
Shooters World Match Rifle	<<locked>>	85%	45353	88%	**90	100%
Shooters World Precision	<<locked>>	88%	46108	90%	**87	99%
Somchem S335	<<locked>>	84%	45861	89%	**05	100%
Somchem S341	<<locked>>	84%	45498	88%	**64	98%
Somchem S355 👍	<<locked>>	91%	45876	89%	**94	99%
Somchem S365	<<locked>>	97%	39204	76%	**64	99%
Vihtavuori N133	<<locked>>	86%	45600	89%	**85	100%
Vihtavuori N135	<<locked>>	93%	45803	89%	**51	100%
Vihtavuori N140	<<locked>>	87%	45876	89%	**48	100%
Vihtavuori N150	<<locked>>	97%	46311	90%	**81	100%
Vihtavuori N160	<<locked>>	95%	45992	89%	**07	97%
Vihtavuori N540	<<locked>>	87%	45368	88%	**61	100%
Vihtavuori N550	<<locked>>	94%	45701	89%	**49	97%
[Vihtavuori N555]*	<<locked>>	97%	33040	64%	**10	93%
Winchester 6.5 StaBALL	<<locked>>	96%	45658	89%	**77	99%
[Winchester 760]*	<<locked>>	93%	45774	89%	**49	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	41698	81%	**08	97%
[ADI AR 2208]*	<<locked>>	81%	35317	69%	**41	94%
Accurate 2495	<<locked>>	81%	41568	81%	**08	100%
Accurate 2520	<<locked>>	81%	42641	83%	**41	100%
[Accurate 2700]*	<<locked>>	85%	38754	75%	**57	90%
Accurate 4064	<<locked>>	81%	34969	68%	**71	99%
[Accurate 4350]*	<<locked>>	85%	28500	55%	**49	90%
Alliant Power Pro 2000-MR	<<locked>>	81%	37376	73%	**05	95%
Alliant Reloder- TS 15.5	<<locked>>	81%	34374	67%	**54	96%
Alliant Reloder-15	<<locked>>	81%	37246	72%	**30	95%
[Alliant Reloder-16]*	<<locked>>	85%	30313	59%	**72	90%
[Alliant Reloder-17]*	<<locked>>	81%	29776	58%	**92	93%
[Alliant Reloder-23]*	<<locked>>	93%	27354	53%	**07	90%
Baschieri & Pellagri 107	<<locked>>	81%	40683	79%	**99	96%
Bofors RP3	<<locked>>	81%	33678	65%	**51	96%
[Bofors RP7]*	<<locked>>	87%	38058	74%	**84	90%
[Hodgdon CFE223]*	<<locked>>	81%	35418	69%	**17	94%
[Hodgdon H380]*	<<locked>>	81%	35027	68%	**64	93%
[Hodgdon H414]*	<<locked>>	86%	36927	72%	**46	90%
[Hodgdon H4350]*	<<locked>>	93%	38696	75%	**20	90%
Hodgdon H4895	<<locked>>	81%	42018	82%	**25	98%
[Hodgdon Hybrid 100V]*	<<locked>>	83%	26049	51%	**21	90%
[Hodgdon LVR]*	<<locked>>	83%	31082	60%	**89	90%
[Hodgdon Superperformance]*	<<locked>>	91%	39740	77%	**12	90%
[Hodgdon VARGET]*	<<locked>>	81%	34925	68%	**31	94%
Hodgdon TrailBoss	<<locked>>	81%	26353	51%	**80	100%
IMR 3031	<<locked>>	81%	37521	73%	**49	100%
[IMR 4064]*	<<locked>>	81%	34374	67%	**12	94%
[IMR 4166 Enduron]*	<<locked>>	82%	36289	70%	**21	90%
[IMR 4350]*	<<locked>>	92%	38435	75%	**20	90%
[IMR 4451 Enduron]*	<<locked>>	85%	36724	71%	**54	90%
[IMR 4831]*	<<locked>>	88%	28660	56%	**26	90%
IMR 4895	<<locked>>	81%	38189	74%	**62	96%
Lovex D073.6	<<locked>>	81%	40306	78%	**92	99%
Lovex S060	<<locked>>	81%	41829	81%	**43	97%
Lovex S062	<<locked>>	81%	36376	71%	**74	97%
[Lovex S065]*	<<locked>>	83%	32140	62%	**52	90%
[Lovex S070]*	<<locked>>	88%	35418	69%	**57	90%
Norma 201	<<locked>>	81%	40524	79%	**59	98%
Norma 202	<<locked>>	81%	40741	79%	**72	100%
Norma 203B	<<locked>>	81%	36637	71%	**17	96%
[Norma URP]*	<<locked>>	85%	29515	57%	**56	90%
Ramshot Big Game	<<locked>>	81%	35897	70%	**10	95%
[Ramshot Hunter]*	<<locked>>	89%	34142	66%	**77	90%
ReloadSwiss RS 14	<<locked>>	81%	26353	51%	**16	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	35592	69%	**38	91%
ReloadSwiss RS 52	<<locked>>	81%	38551	75%	**22	96%
ReloadSwiss RS 60	<<locked>>	81%	31821	62%	**77	97%
[ReloadSwiss RS 62]*	<<locked>>	86%	30139	59%	**95	90%
[ReloadSwiss RS 70]*	<<locked>>	88%	33460	65%	**67	90%
Rottweil R 902	<<locked>>	81%	38247	74%	**97	98%
Rottweil R 903	<<locked>>	81%	31488	61%	**92	95%
[Rottweil R 907]*	<<locked>>	87%	38058	74%	**84	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	32895	64%	**41	94%
SNPE Vectan SP 7	<<locked>>	81%	41524	81%	**79	95%
SNPE Vectan SP 9	<<locked>>	81%	39943	78%	**69	97%
SNPE Vectan Tubal 3000	<<locked>>	81%	42163	82%	**23	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	34606	67%	**72	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	87%	35665	69%	**12	90%
[Shooters World Long Rifle]*	<<locked>>	83%	32140	62%	**52	90%
Shooters World Match Rifle	<<locked>>	81%	40306	78%	**92	99%
Shooters World Precision	<<locked>>	81%	36376	71%	**74	97%
Somchem S335	<<locked>>	81%	41800	81%	**30	100%
Somchem S341	<<locked>>	81%	41379	80%	**89	97%
Somchem S355	<<locked>>	81%	32779	64%	**02	95%
[Somchem S365]*	<<locked>>	82%	23873	46%	**95	90%
Vihtavuori N133	<<locked>>	81%	39581	77%	**74	100%
Vihtavuori N135	<<locked>>	81%	31575	61%	**56	99%
Vihtavuori N140	<<locked>>	81%	37913	74%	**94	100%
[Vihtavuori N150]*	<<locked>>	81%	27789	54%	**51	94%
[Vihtavuori N160]*	<<locked>>	82%	29283	57%	**16	90%
Vihtavuori N540	<<locked>>	81%	37594	73%	**07	99%
[Vihtavuori N550]*	<<locked>>	82%	29689	58%	**59	90%
[Vihtavuori N555]*	<<locked>>	92%	27847	54%	**59	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	27934	54%	**48	92%
[Winchester 760]*	<<locked>>	86%	36927	72%	**46	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