Technical Specifications
Bullet: | .284 | 140gr | Sako Blade |
Bullet Weight: | 140gr | 9.1g |
Bullet Diameter: | 0.284" | 7.21mm |
Bullet Length: | 1.327" | 33.7mm |
Caliber: | 7.21 Firebird (Lazzeroni) |
Case Length (l3): | 2.800" | 71.1mm |
Cartridge Length (C.O.L.): | 3.497" | 88.8mm |
Seated Depth: | 0.630" | 16.0mm |
Shank Seated Depth: | 0.546" | 13.9mm |
Case Capacity: | 121.0 Grains of Water | 7.86 cm3 |
Max. Allowed Pressure: | 66717 psi | 4600 bar |
Primer Size: | Large Rifle Magnum (LRM) |
LID: | LID_B10737_C1103 |
Load description
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 below - see here.
our load data might deviate from other sources - see most common reasons here.
all loads are based on the bullet and case dimensions shown further below - see here what to do if you deviate.
you can set your own specifications in the "Personalized Load Calculator"
Go to "My Account " bottom of the page to define the measure system (imperial vs. metric)
Applied measure system: imperial
No data yet
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Use the Personalized Load Calculator to customize loads to your own specific requirements. 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 this criteria at own risk to also potentially get more powders shown in the load tables.
You can add a specific load / powder from below to your Diary and manage there.
Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
Max Load - Barrel Length: 23.6" | 60.0cm
Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
Start Load - Barrel Length: 23.6" | 60.0cm
Any powder missing? Then click here.
FR ... fill rate of the cartridge in percent
MaxP ... max. pressure of load in psi
% ... max. pressure of load in percent of the maximum allowed pressure for this caliber
V(0) ... muzzle velocity in feets per second (fps)
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.