Load data for 8.6 mm Blackout + .338 | 277gr | CutEdge MTAC

Recommended Powder(s): ADI AR 2219, Hodgdon CFE BLK, Hodgdon H335, ReloadSwiss RS 40, SNPE Vectan SP 10

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.338 \| 277gr \| CutEdge MTAC
Manufacturer SKU:	MTAC 338 277
Bullet Weight:	277gr \| 17.9g
Bullet Diameter:	0.338" \| 8.59mm
Bullet Length:	1.867" \| 47.4mm
Caliber:	8.6 mm Blackout load data
Case Length (l3):	1.685" \| 42.8mm
Cartridge Length (C.O.L.):	2.783" \| 70.7mm
Seated Depth:	0.769" \| 19.5mm
Shank Seated Depth:	0.516" \| 13.1mm
Case Capacity:	50.0 Grains of Water \| 3.25 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	63092 psi \| 4350 bar
LID:	LID_B8528_C1210
Last updated:	2025-02-02
Recommended Twist Rate:	1:9 - 1:8

Load data for 144 loads in caliber 8.6 mm Blackout with .338 | 277gr | CutEdge MTAC bullet and 72 powders such as ADI AR 2219, Hodgdon CFE BLK, Hodgdon H335, ReloadSwiss RS 40, SNPE Vectan SP 10. 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)
Muzzle velocity vs. barrel length
Every 1 inch additional barrel length increases muzzle velocity by approx. 15.2 fps
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>>	97%	41582	66%	**57	95%
ADI AR 2207	<<locked>>	93%	55172	87%	**16	100%
[ADI AR 2208]*	<<locked>>	97%	35607	56%	**42	92%
ADI AR 2219 👍	<<locked>>	97%	56695	90%	**11	100%
Accurate 1680	<<locked>>	85%	55317	88%	**19	100%
Accurate 2015	<<locked>>	96%	46673	74%	**77	100%
[Accurate 2200]*	<<locked>>	97%	46021	73%	**64	94%
Accurate 2230	<<locked>>	97%	51547	82%	**39	98%
Accurate 2460	<<locked>>	97%	50227	80%	**42	99%
Accurate 2495	<<locked>>	96%	37217	59%	**44	100%
Accurate 2520	<<locked>>	97%	40944	65%	**83	98%
Accurate 4064	<<locked>>	96%	30545	48%	**45	97%
Alliant AR-Comp	<<locked>>	96%	40886	65%	**70	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	96%	32547	52%	**45	94%
Alliant Reloder-10x	<<locked>>	97%	51822	82%	**32	100%
[Alliant Reloder-15]*	<<locked>>	97%	36013	57%	**98	93%
Alliant Reloder-7	<<locked>>	92%	56188	89%	**19	100%
Baschieri & Pellagri 106	<<locked>>	96%	55695	88%	**19	100%
[Baschieri & Pellagri 107]*	<<locked>>	97%	41597	66%	**60	93%
Hodgdon BL-C2	<<locked>>	96%	41336	66%	**93	97%
Hodgdon Benchmark	<<locked>>	96%	47181	75%	**67	98%
Hodgdon CFE BLK 👍	<<locked>>	92%	55956	89%	**23	99%
Hodgdon H322	<<locked>>	97%	46688	74%	**09	100%
Hodgdon H335 👍	<<locked>>	96%	55608	88%	**11	100%
Hodgdon H4198	<<locked>>	94%	56217	89%	**09	100%
[Hodgdon VARGET]*	<<locked>>	96%	35114	56%	**36	92%
IMR 3031	<<locked>>	96%	34882	55%	**04	99%
[IMR 4064]*	<<locked>>	97%	34026	54%	**22	92%
IMR 4198	<<locked>>	97%	54099	86%	**06	100%
IMR 4227	<<locked>>	88%	56550	90%	**70	100%
[IMR 4895]*	<<locked>>	97%	36738	58%	**21	94%
IMR 8208 XBR	<<locked>>	97%	44614	71%	**73	97%
Lovex D073.4	<<locked>>	97%	53330	85%	**59	99%
Lovex D073.5	<<locked>>	97%	49458	78%	**36	99%
Lovex D073.6	<<locked>>	96%	37115	59%	**31	98%
Lovex S053	<<locked>>	89%	56666	90%	**44	100%
Lovex S060	<<locked>>	96%	43598	69%	**14	96%
Lovex S062	<<locked>>	96%	34882	55%	**62	95%
Norma 200	<<locked>>	95%	56188	89%	**55	100%
Norma 201	<<locked>>	96%	39523	63%	**14	96%
Norma 202	<<locked>>	96%	39450	63%	**34	99%
[Norma 203B]*	<<locked>>	97%	35244	56%	**91	93%
[Ramshot Big Game]*	<<locked>>	97%	36492	58%	**98	93%
[Ramshot TAC]*	<<locked>>	97%	45179	72%	**67	93%
Ramshot Wild Boar	<<locked>>	96%	42337	67%	**77	95%
Ramshot X-Terminator	<<locked>>	97%	49603	79%	**09	97%
ReloadSwiss RS 36	<<locked>>	87%	55419	88%	**93	100%
ReloadSwiss RS 40 👍	<<locked>>	97%	50923	81%	**46	99%
ReloadSwiss RS 52	<<locked>>	97%	33953	54%	**95	95%
Rottweil R 901	<<locked>>	97%	43743	69%	**57	99%
Rottweil R 902	<<locked>>	97%	37826	60%	**85	96%
SNPE Vectan BA6 1/2	<<locked>>	92%	55506	88%	**19	100%
SNPE Vectan SP 10 👍	<<locked>>	96%	56231	89%	**08	100%
[SNPE Vectan SP 7]*	<<locked>>	97%	41727	66%	**37	92%
SNPE Vectan SP 9	<<locked>>	97%	40074	64%	**34	95%
SNPE Vectan Tubal 3000	<<locked>>	96%	42931	68%	**98	99%
SNPE Vectan Tubal 5000	<<locked>>	96%	34171	54%	**99	98%
Shooters World Match Rifle	<<locked>>	96%	37115	59%	**31	98%
Shooters World Precision	<<locked>>	96%	34882	55%	**62	95%
Shooters World Tactical Rifle	<<locked>>	97%	56115	89%	**62	99%
Somchem S321	<<locked>>	97%	48051	76%	**39	98%
Somchem S335	<<locked>>	96%	41495	66%	**04	99%
Somchem S341	<<locked>>	97%	42003	67%	**47	95%
[Somchem S355]*	<<locked>>	96%	30501	48%	**09	92%
Vihtavuori N120	<<locked>>	96%	56579	90%	**83	100%
Vihtavuori N130	<<locked>>	96%	47311	75%	**44	100%
Vihtavuori N133	<<locked>>	96%	39494	63%	**68	100%
Vihtavuori N140	<<locked>>	96%	36637	58%	**78	98%
Vihtavuori N530	<<locked>>	97%	47137	75%	**13	98%
Vihtavuori N540	<<locked>>	97%	36854	58%	**04	98%
Winchester 748	<<locked>>	97%	46746	74%	**49	99%
Winchester StaBALL Match	<<locked>>	97%	50734	80%	**82	98%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	85%	28413	45%	**47	90%
ADI AR 2207	<<locked>>	81%	38305	61%	**42	100%
[ADI AR 2208]*	<<locked>>	92%	31444	50%	**73	90%
ADI AR 2219	<<locked>>	81%	33663	53%	**36	98%
Accurate 1680	<<locked>>	81%	48849	77%	**54	100%
Accurate 2015	<<locked>>	82%	29298	46%	**44	99%
[Accurate 2200]*	<<locked>>	88%	34461	55%	**06	90%
[Accurate 2230]*	<<locked>>	81%	29269	46%	**44	92%
[Accurate 2460]*	<<locked>>	81%	28863	46%	**54	94%
Accurate 2495	<<locked>>	85%	25164	40%	**50	98%
[Accurate 2520]*	<<locked>>	85%	26774	42%	**57	94%
Accurate 4064	<<locked>>	90%	25077	40%	**44	95%
Alliant AR-Comp	<<locked>>	83%	26745	42%	**50	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	91%	27847	44%	**57	91%
Alliant Reloder-10x	<<locked>>	81%	31647	50%	**83	100%
[Alliant Reloder-15]*	<<locked>>	91%	29820	47%	**93	90%
Alliant Reloder-7	<<locked>>	81%	39581	63%	**45	100%
Baschieri & Pellagri 106	<<locked>>	81%	34621	55%	**80	99%
[Baschieri & Pellagri 107]*	<<locked>>	90%	33591	53%	**36	90%
[Hodgdon BL-C2]*	<<locked>>	84%	26774	42%	**47	91%
[Hodgdon Benchmark]*	<<locked>>	83%	31633	50%	**47	94%
Hodgdon CFE BLK	<<locked>>	81%	38711	61%	**26	96%
Hodgdon H322	<<locked>>	81%	28674	45%	**47	97%
Hodgdon H335	<<locked>>	81%	32445	51%	**26	97%
Hodgdon H4198	<<locked>>	81%	38551	61%	**13	99%
[Hodgdon VARGET]*	<<locked>>	92%	31111	49%	**67	90%
IMR 3031	<<locked>>	86%	26049	41%	**44	97%
[IMR 4064]*	<<locked>>	92%	30052	48%	**54	90%
IMR 4198	<<locked>>	81%	34345	54%	**83	100%
IMR 4227	<<locked>>	81%	46441	74%	**75	100%
[IMR 4895]*	<<locked>>	89%	28514	45%	**80	91%
[IMR 8208 XBR]*	<<locked>>	84%	29559	47%	**47	93%
[Lovex D073.4]*	<<locked>>	81%	30356	48%	**67	94%
[Lovex D073.5]*	<<locked>>	81%	28456	45%	**44	94%
[Lovex D073.6]*	<<locked>>	87%	26774	42%	**57	94%
Lovex S053	<<locked>>	81%	45426	72%	**39	100%
[Lovex S060]*	<<locked>>	86%	32097	51%	**47	92%
[Lovex S062]*	<<locked>>	89%	27934	44%	**44	92%
Norma 200	<<locked>>	81%	35824	57%	**36	100%
[Norma 201]*	<<locked>>	86%	28906	46%	**44	93%
Norma 202	<<locked>>	85%	27731	44%	**44	95%
[Norma 203B]*	<<locked>>	90%	28224	45%	**67	90%
[Ramshot Big Game]*	<<locked>>	92%	31473	50%	**13	90%
[Ramshot TAC]*	<<locked>>	91%	37768	60%	**68	90%
[Ramshot Wild Boar]*	<<locked>>	85%	29356	47%	**67	90%
[Ramshot X-Terminator]*	<<locked>>	82%	30589	48%	**44	91%
ReloadSwiss RS 36	<<locked>>	81%	45658	72%	**98	100%
ReloadSwiss RS 40	<<locked>>	81%	30690	49%	**70	95%
[ReloadSwiss RS 52]*	<<locked>>	89%	26629	42%	**50	91%
Rottweil R 901	<<locked>>	84%	29936	47%	**54	96%
[Rottweil R 902]*	<<locked>>	88%	29225	46%	**44	93%
SNPE Vectan BA6 1/2	<<locked>>	86%	47427	75%	**47	100%
SNPE Vectan SP 10	<<locked>>	81%	34127	54%	**45	97%
[SNPE Vectan SP 7]*	<<locked>>	92%	35520	56%	**49	90%
[SNPE Vectan SP 9]*	<<locked>>	87%	29559	47%	**63	91%
SNPE Vectan Tubal 3000	<<locked>>	87%	31850	50%	**47	97%
SNPE Vectan Tubal 5000	<<locked>>	93%	31096	49%	**50	97%
[Shooters World Match Rifle]*	<<locked>>	87%	26774	42%	**57	94%
[Shooters World Precision]*	<<locked>>	89%	27934	44%	**44	92%
[Shooters World Tactical Rifle]*	<<locked>>	81%	32372	51%	**70	93%
[Somchem S321]*	<<locked>>	81%	28123	45%	**47	93%
Somchem S335	<<locked>>	86%	30356	48%	**44	97%
[Somchem S341]*	<<locked>>	87%	29907	47%	**60	90%
[Somchem S355]*	<<locked>>	93%	27876	44%	**57	91%
Vihtavuori N120	<<locked>>	81%	35897	57%	**77	100%
Vihtavuori N130	<<locked>>	83%	32285	51%	**57	100%
Vihtavuori N133	<<locked>>	89%	31589	50%	**57	99%
Vihtavuori N140	<<locked>>	88%	28442	45%	**40	96%
[Vihtavuori N530]*	<<locked>>	82%	28892	46%	**47	93%
Vihtavuori N540	<<locked>>	88%	27847	44%	**50	95%
[Winchester 748]*	<<locked>>	81%	27789	44%	**54	93%
[Winchester StaBALL Match]*	<<locked>>	81%	29138	46%	**67	91%

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