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M17 Tracer

Drawing of the M17 Tracer bullet
Cartridge
.50 BMG
Bullet weight
41.70 g
Reference velocity
872 m/s
Muzzle energy
15854 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
M17
Maker
Lake City AAP
Country of origin
United States
Introduced
1945
Military load
Yes
Widely available
Yes

ProjectileThe figures the drawing and the solver start from.

Bullet type
Tracer
Cartridge
.50 BMG
Bullet diameter
12.98 mm
Bullet weight
41.7 g (643.5 gr)
Sectional density
0.352
Ballistic coefficient (G1)
0.56
Ballistic coefficient (G7)
0.28
Reference velocity
872 m/s (2861 ft/s)
Reference barrel
1143 mm
Velocity retention exponent
0.13

Ballistics

Downrange, solved

Solved at the reference barrel of 1143 mm from the G1 coefficient and the load's velocity retention. A different barrel gives a different curve.

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0 m872 m/s

0225450675900533 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
15854 J
Effective range
533 m
Momentum
36.36 kg m/s
Taylor knockout factor
134.4
Hatcher relative stopping power
2039
Energy density
11981.2 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 m872 m/s15854 J0 cm0 s2.54
50 m865 m/s15611 J1.6 cm0.058 s2.52
100 m859 m/s15369 J6.6 cm0.116 s2.50
200 m845 m/s14889 J26.6 cm0.233 s2.46
300 m831 m/s14412 J60.9 cm0.352 s2.42
400 m818 m/s13939 J110 cm0.474 s2.38
500 m804 m/s13468 J174.8 cm0.597 s2.34
600 m790 m/s13000 J256 cm0.722 s2.30
800 m761 m/s12070 J471.5 cm0.98 s2.22
1000 m731 m/s11146 J764.6 cm1.249 s2.13

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/m17-tracer' \  --header 'X-API-Key: your_key'