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Lapua AP485 Armor Piercing

Drawing of the Lapua AP485 Armor Piercing bullet
Cartridge
.338 Lapua Magnum
Bullet weight
16.10 g
Reference velocity
895 m/s
Muzzle energy
6448 J

Specification

The load, and the figures its drawing is made from

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IdentityWho makes it, and what it is for.

Designation
4318035
Maker
Lapua (Nammo)
Country of origin
Finland
Introduced
1993
Military load
Yes
Widely available
No

ProjectileThe figures the drawing and the solver start from.

Bullet type
AP
Cartridge
.338 Lapua Magnum
Bullet diameter
8.61 mm
Bullet weight
16.1 g (248.5 gr)
Sectional density
0.31
Ballistic coefficient (G1)
0.564
Ballistic coefficient (G7)
0.289
Reference velocity
895 m/s (2936 ft/s)
Reference barrel
680 mm
Velocity retention exponent
0.13

Ballistics

Downrange, solved

Solved at the reference barrel of 680 mm from the G1 coefficient and the load's velocity retention. A different barrel gives a different curve.

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0 m895 m/s

0225450675900548 m0501002003004005006008001000

At the muzzle

What leaves the barrel

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MuzzleThe solver’s figures at the reference barrel, where the curve starts.

Muzzle energy
6448 J
Effective range
548 m
Momentum
14.41 kg m/s
Taylor knockout factor
35.3
Hatcher relative stopping power
386
Energy density
11075.1 J/cm²

Downrange

Point by point

The same solution as the chart, at each distance the solver reports.

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DistanceVelocityEnergyDropTime of flightMach
0 m895 m/s6448 J0 cm0 s2.61
50 m889 m/s6356 J1.5 cm0.056 s2.59
100 m882 m/s6264 J6.2 cm0.113 s2.57
200 m869 m/s6081 J25.2 cm0.227 s2.53
300 m856 m/s5901 J57.6 cm0.343 s2.50
400 m843 m/s5721 J104 cm0.46 s2.46
500 m830 m/s5543 J165 cm0.58 s2.42
600 m816 m/s5366 J241.3 cm0.701 s2.38
800 m789 m/s5015 J443.2 cm0.951 s2.30
1000 m761 m/s4667 J716.4 cm1.208 s2.22

API

The call that returns this record

The same fields, in the same units, from the same endpoint the page reads.

curl --request GET \  --url 'https://api.gunspec.io/v1/ammunition/lapua-ap485' \  --header 'X-API-Key: your_key'