Load data for .450 N.E. 3 1/4'' + .458 | 300gr | Atomic 29 FNHP

Recommended Powder(s): Accurate 2495, IMR 3031

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.458 \| 300gr \| Atomic 29 FNHP
Bullet Weight:	300gr \| 19.4g
Bullet Diameter:	0.458" \| 11.63mm
Bullet Length:	<<locked>>
Caliber:	.450 N.E. 3 1/4'' load data
Case Length (l3):	3.250" \| 82.5mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	136.0 Grains of Water \| 8.83 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B12244_C765
Last updated:	2026-02-07

Load data for 104 loads in caliber .450 N.E. 3 1/4'' with .458 | 300gr | Atomic 29 FNHP bullet and 52 powders such as Accurate 2495, IMR 3031. 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.

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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>>	87%	39494	89%	**87	93%
[ADI AR 2208]*	<<locked>>	93%	39769	90%	**61	92%
Accurate 2015	<<locked>>	83%	39610	90%	**44	100%
Accurate 2495 👍	<<locked>>	89%	39639	90%	**36	100%
Accurate 2520	<<locked>>	87%	39595	90%	**13	97%
Accurate 4064	<<locked>>	94%	39537	89%	**33	98%
Alliant AR-Comp	<<locked>>	87%	39581	89%	**40	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	94%	39624	90%	**17	94%
[Alliant Reloder-15]*	<<locked>>	92%	39755	90%	**17	92%
[Alliant Reloder-17]*	<<locked>>	97%	38551	87%	**23	92%
Bofors RP3	<<locked>>	95%	39523	89%	**33	95%
Hodgdon BL-C2	<<locked>>	87%	39436	89%	**26	95%
Hodgdon Benchmark	<<locked>>	84%	39537	89%	**18	96%
Hodgdon H322	<<locked>>	84%	39407	89%	**90	98%
[Hodgdon H4895]*	<<locked>>	87%	39653	90%	**03	94%
[Hodgdon VARGET]*	<<locked>>	93%	39769	90%	**61	92%
Hodgdon TrailBoss	<<locked>>	97%	32053	72%	**42	100%
IMR 3031 👍	<<locked>>	92%	39523	89%	**46	99%
[IMR 4064]*	<<locked>>	94%	39653	90%	**54	92%
[IMR 4895]*	<<locked>>	91%	39639	90%	**23	93%
IMR 8208 XBR	<<locked>>	86%	39813	90%	**67	95%
Lovex D073.6	<<locked>>	89%	39595	90%	**13	97%
[Lovex S060]*	<<locked>>	86%	39392	89%	**08	93%
Lovex S062	<<locked>>	92%	39610	90%	**87	95%
Norma 201	<<locked>>	88%	39378	89%	**61	95%
Norma 202	<<locked>>	88%	39624	90%	**94	98%
[Norma 203B]*	<<locked>>	92%	39334	89%	**10	93%
[Ramshot Big Game]*	<<locked>>	92%	39798	90%	**17	92%
[Ramshot Wild Boar]*	<<locked>>	87%	39624	90%	**97	93%
ReloadSwiss RS 14	<<locked>>	97%	32082	73%	**85	100%
[ReloadSwiss RS 52]*	<<locked>>	90%	39798	90%	**76	92%
ReloadSwiss RS 60	<<locked>>	96%	39479	89%	**66	96%
Rottweil R 901	<<locked>>	85%	39711	90%	**57	97%
Rottweil R 902	<<locked>>	90%	39610	90%	**64	95%
[Rottweil R 903]*	<<locked>>	97%	39465	89%	**13	94%
[SNPE Vectan SP 11]*	<<locked>>	95%	39755	90%	**23	93%
[SNPE Vectan SP 9]*	<<locked>>	89%	39726	90%	**84	93%
SNPE Vectan Tubal 3000	<<locked>>	86%	39450	89%	**02	97%
SNPE Vectan Tubal 5000	<<locked>>	93%	39494	89%	**15	98%
Shooters World Match Rifle	<<locked>>	89%	39595	90%	**13	97%
Shooters World Precision	<<locked>>	92%	39610	90%	**87	95%
Somchem S321	<<locked>>	84%	39581	89%	**90	95%
Somchem S335	<<locked>>	87%	39523	89%	**21	98%
[Somchem S341]*	<<locked>>	88%	39595	90%	**67	93%
[Somchem S355]*	<<locked>>	95%	39218	89%	**00	94%
Vihtavuori N133	<<locked>>	89%	39682	90%	**28	99%
Vihtavuori N135	<<locked>>	97%	38827	88%	**77	99%
Vihtavuori N140	<<locked>>	90%	39595	90%	**71	98%
[Vihtavuori N150]*	<<locked>>	97%	34635	78%	**69	94%
Vihtavuori N530	<<locked>>	84%	39537	89%	**80	95%
Vihtavuori N540	<<locked>>	91%	39769	90%	**03	98%
Winchester 748	<<locked>>	85%	39726	90%	**30	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	82%	32866	74%	**20	90%
[ADI AR 2208]*	<<locked>>	89%	35505	80%	**69	90%
Accurate 2015	<<locked>>	81%	36796	83%	**92	99%
Accurate 2495	<<locked>>	81%	30603	69%	**23	98%
[Accurate 2520]*	<<locked>>	81%	31589	71%	**33	94%
[Accurate 4064]*	<<locked>>	81%	25759	58%	**79	93%
Alliant AR-Comp	<<locked>>	81%	32198	73%	**66	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	86%	30284	68%	**84	90%
[Alliant Reloder-15]*	<<locked>>	87%	34606	78%	**92	90%
[Alliant Reloder-17]*	<<locked>>	95%	35621	81%	**57	90%
[Bofors RP3]*	<<locked>>	86%	29892	68%	**93	90%
[Hodgdon BL-C2]*	<<locked>>	81%	31995	72%	**39	91%
Hodgdon Benchmark	<<locked>>	81%	36709	83%	**52	95%
Hodgdon H322	<<locked>>	81%	35824	81%	**08	97%
[Hodgdon H4895]*	<<locked>>	81%	32401	73%	**23	91%
[Hodgdon VARGET]*	<<locked>>	89%	35505	80%	**69	90%
Hodgdon TrailBoss	<<locked>>	86%	27311	62%	**40	100%
IMR 3031	<<locked>>	81%	28195	64%	**64	96%
[IMR 4064]*	<<locked>>	89%	34403	78%	**33	90%
[IMR 4895]*	<<locked>>	85%	32590	74%	**56	90%
[IMR 8208 XBR]*	<<locked>>	81%	34243	77%	**39	93%
[Lovex D073.6]*	<<locked>>	81%	29733	67%	**77	93%
[Lovex S060]*	<<locked>>	81%	33634	76%	**74	91%
[Lovex S062]*	<<locked>>	82%	28979	65%	**18	90%
[Norma 201]*	<<locked>>	81%	31575	71%	**70	92%
Norma 202	<<locked>>	81%	31328	71%	**93	95%
[Norma 203B]*	<<locked>>	86%	33069	75%	**56	90%
[Ramshot Big Game]*	<<locked>>	88%	34664	78%	**98	90%
[Ramshot Wild Boar]*	<<locked>>	81%	33301	75%	**39	90%
ReloadSwiss RS 14	<<locked>>	82%	25614	58%	**40	100%
[ReloadSwiss RS 52]*	<<locked>>	87%	35839	81%	**71	90%
[ReloadSwiss RS 60]*	<<locked>>	87%	30240	68%	**10	90%
Rottweil R 901	<<locked>>	81%	34983	79%	**49	96%
[Rottweil R 902]*	<<locked>>	81%	29979	68%	**25	91%
[Rottweil R 903]*	<<locked>>	89%	30690	69%	**10	90%
[SNPE Vectan SP 11]*	<<locked>>	91%	34635	78%	**05	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	33185	75%	**30	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	33605	76%	**70	96%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	27064	61%	**13	94%
[Shooters World Match Rifle]*	<<locked>>	81%	29733	67%	**77	93%
[Shooters World Precision]*	<<locked>>	82%	28979	65%	**18	90%
[Somchem S321]*	<<locked>>	81%	36289	82%	**15	94%
Somchem S335	<<locked>>	81%	32779	74%	**67	96%
[Somchem S341]*	<<locked>>	83%	33620	76%	**26	90%
[Somchem S355]*	<<locked>>	88%	31299	71%	**00	90%
Vihtavuori N133	<<locked>>	81%	31198	71%	**38	98%
[Vihtavuori N135]*	<<locked>>	81%	23960	54%	**90	94%
[Vihtavuori N140]*	<<locked>>	81%	29283	66%	**21	94%
[Vihtavuori N150]*	<<locked>>	90%	27731	63%	**85	90%
[Vihtavuori N530]*	<<locked>>	81%	35723	81%	**92	94%
[Vihtavuori N540]*	<<locked>>	81%	28877	65%	**28	93%
[Winchester 748]*	<<locked>>	81%	34969	79%	**15	94%

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