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Load data for .221 Rem. Fireball + .224 | 55gr | Sierra SP Blitz

Recommended Powder(s): ADI AR 2207, ReloadSwiss RS 36, Vihtavuori N120

.221 Rem. Fireball + .224 | 55gr | Sierra SP Blitz

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.224 | 55gr | Sierra SP Blitz
Manufacturer SKU:
1345
Bullet Weight:
55gr | 3.6g
Bullet Diameter:
0.224" | 5.69mm
Bullet Length:
0.722" | 18.3mm
Caliber:
.221 Rem. Fireball load data
Case Length (l3):
1.397" | 35.5mm
Cartridge Length (C.O.L.):
1.803" | 45.8mm
Seated Depth:
0.316" | 8.0mm
Shank Seated Depth:
0.316" | 8.0mm
Case Capacity:
22.0 Grains of Water | 1.43 cm³
Primer Size:
Small Rifle (SR)
Max. allowed Pressure:
46412 psi | 3200 bar
LID:
LID_B5744_C125
Last updated:
2025-02-02

Load data for 26 loads in caliber .221 Rem. Fireball with .224 | 55gr | Sierra SP Blitz bullet and 13 powders such as ADI AR 2207, ReloadSwiss RS 36, Vihtavuori N120. 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".

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    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.

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 2207 👍
<<locked>>
96%
39465
85%
**72
99%
[Accurate 1680]*
<<locked>>
86%
39943
86%
**80
92%
[Alliant Reloder-10x]*
<<locked>>
96%
32489
70%
**18
93%
Alliant Reloder-7
<<locked>>
94%
39711
86%
**13
96%
IMR 4198
<<locked>>
95%
35650
77%
**18
95%
IMR 4227
<<locked>>
88%
40785
88%
**90
98%
Lovex S053
<<locked>>
89%
39987
86%
**84
100%
Norma 200
<<locked>>
95%
35839
77%
**97
95%
ReloadSwiss RS 14
<<locked>>
96%
26324
57%
**42
100%
ReloadSwiss RS 36 👍
<<locked>>
90%
41655
90%
**46
98%
SNPE Vectan BA6 1/2
<<locked>>
92%
40379
87%
**62
100%
Vihtavuori N110
<<locked>>
85%
41756
90%
**64
100%
Vihtavuori N120 👍
<<locked>>
96%
37405
81%
**90
99%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
[ADI AR 2207]*
<<locked>>
81%
24729
53%
**95
94%
[Accurate 1680]*
<<locked>>
83%
35650
77%
**92
91%
[Alliant Reloder-10x]*
<<locked>>
92%
28747
62%
**23
91%
[Alliant Reloder-7]*
<<locked>>
81%
26469
57%
**85
90%
[IMR 4198]*
<<locked>>
85%
26977
58%
**85
90%
IMR 4227
<<locked>>
81%
32097
69%
**97
95%
Lovex S053
<<locked>>
81%
31546
68%
**03
99%
[Norma 200]*
<<locked>>
84%
25280
54%
**18
90%
ReloadSwiss RS 14
<<locked>>
85%
22336
48%
**47
100%
ReloadSwiss RS 36
<<locked>>
81%
31386
68%
**26
95%
SNPE Vectan BA6 1/2
<<locked>>
81%
29878
64%
**62
100%
Vihtavuori N110
<<locked>>
81%
36985
80%
**82
100%
Vihtavuori N120
<<locked>>
81%
23598
51%
**26
95%

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.

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