Norma · Rifle

Norma Whitetail 270 WSM 8.4g

0.359BC (G1)

130.0gr8.42 g

975m/s3199 fps

4004J2953 ft·lb

Manufacturer	Norma
Calibre	7.04 mm (.277")
Bullet weight	130.0 gr · 8.42 g
Ballistic coefficient G1	0.359
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	975.0 m/s · 3199 fps
Muzzle energy	4004 J · 2953 ft·lb
Sectional density	0.242
Form factor	i1 0.673
Category	Rifle
Source	Norma website 2026-07-02 (verified)

Reading these numbers

Only a G1 ballistic coefficient is published for this load, so BallisticApp solves it against the G1 drag table. G1 BC drifts with velocity — the figure below is valid near the muzzle and drops off as the bullet slows.

Muzzle energy of 4004 J (2953 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.242 describes weight per unit of frontal area; divided by the ballistic coefficient it gives the form factor, which is how much drag the shape adds over the standard projectile.

Among the 83 loads of this bore diameter in the database, this one's G1 BC of 0.359 is higher than 30 of them.

Similar 7.04 mm (.277") loads

Barnes TSX, 270 Win, 130 Grain, Barnes Triple-Shock X Bullet (TSX), 3060 fps130 gr · BC 0.374 · 933 m/s Fusion Rifle, 270 Win, 130 Grain, Fusion Soft Point, 3050 fps130 gr · BC 0.400 · 930 m/s Nosler Partition, 270 Win, 130 Grain, Nosler Partition, 3060 fps130 gr · BC 0.416 · 933 m/s Power-Shok Copper Rifle, 270 Win, 130 Grain, Copper HP, 3060 fps130 gr · BC 0.287 · 933 m/s Power-Shok Rifle, 270 WSM, 130 Grain, Jacketed Soft Point, 3250 fps130 gr · BC 0.367 · 991 m/s Power-Shok Rifle, 270 Win, 130 Grain, Jacketed Soft Point, 3060 fps130 gr · BC 0.372 · 933 m/s

Turn this into a drop table for your rifle.

These figures are the bullet's starting point. What you actually dial depends on your rifle's zero, the air you're shooting in and the wind on the day — BallisticApp solves that on the phone, offline, using the same G1/G7 tables and this database.

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