Load data for .280 Ackley Improved + .284 | 100gr | Barnes Solid

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.284 \| 100gr \| Barnes Solid
Manufacturer SKU:	28401
Bullet Weight:	100gr \| 6.5g
Bullet Diameter:	0.284" \| 7.21mm
Bullet Length:	<<locked>>
Caliber:	.280 Ackley Improved load data
Case Length (l3):	2.540" \| 64.5mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	74.0 Grains of Water \| 4.80 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	64977 psi \| 4480 bar
LID:	LID_B553_C285
Last updated:	2026-03-10

Load data for 196 loads in caliber .280 Ackley Improved with .284 | 100gr | Barnes Solid bullet and 98 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>>	90%	57638	89%	**32	99%
ADI AR 2208	<<locked>>	95%	57667	89%	**09	99%
ADI Benchmark 8208	<<locked>>	88%	57638	89%	**09	100%
Accurate 2015	<<locked>>	86%	57783	89%	**40	100%
Accurate 2200	<<locked>>	88%	57957	89%	**92	98%
Accurate 2230	<<locked>>	84%	57638	89%	**76	100%
Accurate 2460	<<locked>>	84%	57638	89%	**79	100%
Accurate 2495	<<locked>>	89%	58204	90%	**06	100%
Accurate 2520	<<locked>>	88%	57595	89%	**19	100%
Accurate 2700	<<locked>>	96%	57841	89%	**23	95%
Accurate 4064	<<locked>>	94%	57812	89%	**15	100%
Accurate 4350	<<locked>>	97%	47166	73%	**81	96%
Alliant AR-Comp	<<locked>>	88%	58421	90%	**89	100%
Alliant Power Pro 2000-MR	<<locked>>	92%	58117	89%	**60	99%
Alliant Reloder- TS 15.5	<<locked>>	95%	57740	89%	**42	100%
Alliant Reloder-10x	<<locked>>	84%	57624	89%	**53	100%
Alliant Reloder-15 👍	<<locked>>	93%	58030	89%	**61	99%
Alliant Reloder-16	<<locked>>	97%	46238	71%	**91	96%
Alliant Reloder-17	<<locked>>	97%	54418	84%	**84	99%
[Alliant Reloder-23]*	<<locked>>	97%	33373	51%	**63	93%
Baschieri & Pellagri 107	<<locked>>	90%	57624	89%	**42	99%
Bofors RP3	<<locked>>	95%	57957	89%	**45	100%
[Bofors RP7]*	<<locked>>	97%	54607	84%	**27	94%
Hodgdon BL-C2	<<locked>>	88%	57377	88%	**45	100%
Hodgdon Benchmark	<<locked>>	87%	57885	89%	**60	100%
Hodgdon CFE223	<<locked>>	93%	57653	89%	**78	99%
Hodgdon H322	<<locked>>	87%	57957	89%	**09	100%
Hodgdon H380	<<locked>>	94%	58450	90%	**38	98%
Hodgdon H414	<<locked>>	97%	55782	86%	**45	95%
Hodgdon H4895	<<locked>>	90%	58189	90%	**51	100%
Hodgdon Hybrid 100V	<<locked>>	97%	42395	65%	**59	97%
Hodgdon LVR	<<locked>>	97%	51184	79%	**60	97%
[Hodgdon Superperformance]*	<<locked>>	97%	51880	80%	**79	94%
Hodgdon VARGET	<<locked>>	95%	57667	89%	**09	99%
Hodgdon TrailBoss	<<locked>>	97%	33591	52%	**10	100%
IMR 3031	<<locked>>	93%	58291	90%	**58	100%
IMR 4064	<<locked>>	96%	57450	88%	**99	99%
IMR 4166 Enduron	<<locked>>	96%	57653	89%	**63	96%
IMR 4198	<<locked>>	84%	57783	89%	**14	100%
[IMR 4350]*	<<locked>>	97%	47514	73%	**12	92%
IMR 4451 Enduron	<<locked>>	97%	56188	86%	**60	95%
[IMR 4831]*	<<locked>>	97%	40176	62%	**14	94%
IMR 4895 👍	<<locked>>	92%	57682	89%	**68	99%
IMR 8208 XBR	<<locked>>	88%	57638	89%	**09	100%
Lovex D073.5	<<locked>>	84%	58117	89%	**83	100%
Lovex D073.6	<<locked>>	90%	57595	89%	**19	100%
Lovex S060	<<locked>>	90%	57725	89%	**60	99%
Lovex S062	<<locked>>	94%	58189	90%	**15	100%
Lovex S065	<<locked>>	97%	52373	81%	**01	96%
[Lovex S070]*	<<locked>>	97%	49632	76%	**58	94%
Norma 201	<<locked>>	90%	57537	89%	**02	100%
Norma 202	<<locked>>	90%	58117	89%	**12	100%
Norma 203B	<<locked>>	94%	58291	90%	**61	99%
Norma URP	<<locked>>	97%	47268	73%	**84	96%
Ramshot Big Game 👍	<<locked>>	93%	57725	89%	**68	99%
[Ramshot Hunter]*	<<locked>>	97%	46122	71%	**55	94%
Ramshot TAC	<<locked>>	88%	58291	90%	**99	97%
Ramshot Wild Boar	<<locked>>	88%	57841	89%	**35	99%
Ramshot X-Terminator	<<locked>>	86%	57928	89%	**86	99%
ReloadSwiss RS 14	<<locked>>	97%	33750	52%	**52	100%
ReloadSwiss RS 40	<<locked>>	85%	58276	90%	**09	100%
ReloadSwiss RS 50	<<locked>>	94%	58407	90%	**15	97%
ReloadSwiss RS 52 👍	<<locked>>	91%	58247	90%	**27	99%
ReloadSwiss RS 60 👍	<<locked>>	97%	58160	90%	**70	100%
ReloadSwiss RS 62	<<locked>>	97%	47326	73%	**07	96%
ReloadSwiss RS 70	<<locked>>	97%	47456	73%	**14	95%
Rottweil R 901	<<locked>>	88%	57914	89%	**79	100%
Rottweil R 902	<<locked>>	93%	58175	90%	**02	100%
Rottweil R 903	<<locked>>	97%	57319	88%	**35	100%
[Rottweil R 907]*	<<locked>>	97%	54607	84%	**27	94%
SNPE Vectan SP 11	<<locked>>	96%	57986	89%	**68	99%
SNPE Vectan SP 7	<<locked>>	89%	57798	89%	**92	98%
SNPE Vectan SP 9	<<locked>>	91%	58349	90%	**28	99%
SNPE Vectan Tubal 3000	<<locked>>	90%	58073	89%	**27	100%
SNPE Vectan Tubal 5000	<<locked>>	96%	58450	90%	**17	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	97%	51967	80%	**28	94%
Shooters World Long Rifle	<<locked>>	97%	52373	81%	**01	96%
Shooters World Match Rifle	<<locked>>	90%	57595	89%	**19	100%
Shooters World Precision	<<locked>>	94%	58189	90%	**15	100%
Somchem S321	<<locked>>	86%	58001	89%	**19	100%
Somchem S335	<<locked>>	90%	58436	90%	**37	100%
Somchem S341	<<locked>>	89%	58102	89%	**06	99%
Somchem S355	<<locked>>	97%	57798	89%	**25	99%
Somchem S365	<<locked>>	97%	41814	64%	**15	98%
Vihtavuori N130	<<locked>>	87%	58102	89%	**01	100%
Vihtavuori N133	<<locked>>	92%	57856	89%	**10	100%
Vihtavuori N135	<<locked>>	97%	54375	84%	**14	100%
Vihtavuori N140	<<locked>>	92%	57841	89%	**63	100%
Vihtavuori N150	<<locked>>	97%	48356	74%	**22	99%
Vihtavuori N160	<<locked>>	97%	52170	80%	**37	97%
Vihtavuori N530	<<locked>>	87%	58407	90%	**35	100%
Vihtavuori N540	<<locked>>	93%	58030	89%	**06	100%
Vihtavuori N550	<<locked>>	97%	52649	81%	**96	97%
[Vihtavuori N555]*	<<locked>>	97%	35607	55%	**48	93%
Winchester 6.5 StaBALL	<<locked>>	97%	50821	78%	**81	99%
Winchester 748	<<locked>>	86%	57537	89%	**55	100%
Winchester 760	<<locked>>	97%	55782	86%	**45	95%
Winchester StaBALL Match	<<locked>>	84%	58160	90%	**38	100%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	43410	67%	**56	97%
[ADI AR 2208]*	<<locked>>	81%	37014	57%	**72	94%
ADI Benchmark 8208	<<locked>>	81%	45498	70%	**73	98%
Accurate 2015	<<locked>>	81%	49284	76%	**99	100%
Accurate 2200	<<locked>>	81%	45687	70%	**59	96%
Accurate 2230	<<locked>>	81%	52344	81%	**81	99%
Accurate 2460	<<locked>>	81%	52402	81%	**94	100%
Accurate 2495	<<locked>>	81%	44367	68%	**76	100%
Accurate 2520	<<locked>>	81%	45194	70%	**96	99%
[Accurate 2700]*	<<locked>>	86%	42308	65%	**15	90%
Accurate 4064	<<locked>>	81%	37347	57%	**12	99%
[Accurate 4350]*	<<locked>>	86%	31908	49%	**97	90%
Alliant AR-Comp	<<locked>>	81%	45063	69%	**76	100%
[Alliant Power Pro 2000-MR]*	<<locked>>	81%	39450	61%	**43	94%
Alliant Reloder- TS 15.5	<<locked>>	81%	36318	56%	**95	95%
Alliant Reloder-10x	<<locked>>	81%	53200	82%	**84	100%
Alliant Reloder-15	<<locked>>	81%	39146	60%	**68	95%
[Alliant Reloder-16]*	<<locked>>	86%	33359	51%	**33	90%
[Alliant Reloder-17]*	<<locked>>	81%	31589	49%	**07	92%
[Alliant Reloder-23]*	<<locked>>	93%	29907	46%	**35	90%
Baschieri & Pellagri 107	<<locked>>	81%	42917	66%	**43	95%
Bofors RP3	<<locked>>	81%	35897	55%	**92	95%
[Bofors RP7]*	<<locked>>	89%	42235	65%	**71	90%
Hodgdon BL-C2	<<locked>>	81%	45266	70%	**12	98%
Hodgdon Benchmark	<<locked>>	81%	47485	73%	**76	99%
[Hodgdon CFE223]*	<<locked>>	81%	37550	58%	**48	93%
Hodgdon H322	<<locked>>	81%	48544	75%	**41	100%
[Hodgdon H380]*	<<locked>>	81%	37159	57%	**99	92%
[Hodgdon H414]*	<<locked>>	87%	40292	62%	**14	90%
Hodgdon H4895	<<locked>>	81%	43758	67%	**59	97%
[Hodgdon Hybrid 100V]*	<<locked>>	84%	28340	44%	**53	90%
[Hodgdon LVR]*	<<locked>>	84%	34069	52%	**43	90%
[Hodgdon Superperformance]*	<<locked>>	92%	43526	67%	**92	90%
[Hodgdon VARGET]*	<<locked>>	81%	36492	56%	**53	93%
Hodgdon TrailBoss	<<locked>>	81%	26455	41%	**32	100%
IMR 3031	<<locked>>	81%	39552	61%	**07	100%
[IMR 4064]*	<<locked>>	81%	36013	55%	**40	94%
[IMR 4166 Enduron]*	<<locked>>	84%	39740	61%	**86	90%
IMR 4198	<<locked>>	81%	53200	82%	**41	100%
[IMR 4350]*	<<locked>>	93%	42090	65%	**84	90%
[IMR 4451 Enduron]*	<<locked>>	86%	40001	62%	**22	90%
[IMR 4831]*	<<locked>>	90%	31792	49%	**74	90%
IMR 4895	<<locked>>	81%	40001	62%	**97	96%
IMR 8208 XBR	<<locked>>	81%	45498	70%	**73	98%
Lovex D073.5	<<locked>>	81%	52112	80%	**81	100%
Lovex D073.6	<<locked>>	81%	42134	65%	**23	99%
Lovex S060	<<locked>>	81%	43540	67%	**91	97%
Lovex S062	<<locked>>	81%	38363	59%	**12	97%
[Lovex S065]*	<<locked>>	84%	35360	54%	**17	90%
[Lovex S070]*	<<locked>>	89%	39291	60%	**35	90%
Norma 201	<<locked>>	81%	42598	66%	**07	98%
Norma 202	<<locked>>	81%	42728	66%	**20	99%
Norma 203B	<<locked>>	81%	38392	59%	**51	95%
[Norma URP]*	<<locked>>	86%	32387	50%	**04	90%
Ramshot Big Game	<<locked>>	81%	38116	59%	**48	95%
[Ramshot Hunter]*	<<locked>>	90%	37608	58%	**38	90%
Ramshot TAC	<<locked>>	81%	45832	71%	**69	95%
Ramshot Wild Boar	<<locked>>	81%	45078	69%	**92	97%
Ramshot X-Terminator	<<locked>>	81%	49617	76%	**28	98%
ReloadSwiss RS 14	<<locked>>	81%	26672	41%	**75	100%
ReloadSwiss RS 40	<<locked>>	81%	51488	79%	**91	100%
[ReloadSwiss RS 50]*	<<locked>>	82%	38290	59%	**92	90%
ReloadSwiss RS 52	<<locked>>	81%	40683	63%	**66	95%
ReloadSwiss RS 60	<<locked>>	81%	33620	52%	**05	96%
[ReloadSwiss RS 62]*	<<locked>>	87%	33634	52%	**66	90%
[ReloadSwiss RS 70]*	<<locked>>	89%	36274	56%	**28	90%
Rottweil R 901	<<locked>>	81%	46586	72%	**69	100%
Rottweil R 902	<<locked>>	81%	40379	62%	**41	97%
[Rottweil R 903]*	<<locked>>	81%	33663	52%	**10	94%
[Rottweil R 907]*	<<locked>>	89%	42235	65%	**71	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	34896	54%	**69	93%
SNPE Vectan SP 7	<<locked>>	81%	43947	68%	**23	95%
SNPE Vectan SP 9	<<locked>>	81%	41916	65%	**10	96%
SNPE Vectan Tubal 3000	<<locked>>	81%	44019	68%	**77	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	36303	56%	**04	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	88%	39189	60%	**59	90%
[Shooters World Long Rifle]*	<<locked>>	84%	35360	54%	**17	90%
Shooters World Match Rifle	<<locked>>	81%	42134	65%	**23	99%
Shooters World Precision	<<locked>>	81%	38363	59%	**12	97%
Somchem S321	<<locked>>	81%	49719	77%	**68	99%
Somchem S335	<<locked>>	81%	43569	67%	**71	100%
Somchem S341	<<locked>>	81%	43801	67%	**30	97%
[Somchem S355]*	<<locked>>	81%	34621	53%	**23	94%
[Somchem S365]*	<<locked>>	83%	26527	41%	**46	90%
Vihtavuori N130	<<locked>>	81%	49066	76%	**59	100%
Vihtavuori N133	<<locked>>	81%	41176	63%	**22	100%
Vihtavuori N135	<<locked>>	81%	33388	51%	**90	99%
Vihtavuori N140	<<locked>>	81%	40001	62%	**35	99%
[Vihtavuori N150]*	<<locked>>	81%	29530	45%	**56	94%
[Vihtavuori N160]*	<<locked>>	83%	32474	50%	**64	90%
Vihtavuori N530	<<locked>>	81%	48051	74%	**45	99%
Vihtavuori N540	<<locked>>	81%	39653	61%	**51	99%
[Vihtavuori N550]*	<<locked>>	83%	32953	51%	**17	90%
[Vihtavuori N555]*	<<locked>>	92%	30792	47%	**97	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	29718	46%	**46	91%
Winchester 748	<<locked>>	81%	49037	75%	**91	99%
[Winchester 760]*	<<locked>>	87%	40292	62%	**14	90%
Winchester StaBALL Match	<<locked>>	81%	52069	80%	**33	99%

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