Norma · Rifle

Norma Vulkan .270 Winchester 10.1g

0.340BC (G1)

156.0gr10.11 g

870m/s2854 fps

3826J2822 ft·lb

Manufacturer	Norma
Calibre	7.04 mm (.277")
Bullet weight	156.0 gr · 10.11 g
Ballistic coefficient G1	0.340
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	870.0 m/s · 2854 fps
Muzzle energy	3826 J · 2822 ft·lb
Sectional density	0.290
Form factor	i1 0.853
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 3826 J (2822 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.290 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 0.340 is higher than 18 of them.

Similar 7.04 mm (.277") loads

Fusion Rifle, 270 WSM, 150 Grain, Fusion Soft Point, 3060 fps150 gr · BC 0.499 · 933 m/s Fusion Rifle, 270 Win, 150 Grain, Fusion Soft Point, 2850 fps150 gr · BC 0.471 · 869 m/s Fusion Tipped Rifle, 270 Win, 150 Grain, Fusion Tipped, 2850 fps150 gr · BC 0.495 · 869 m/s Nosler Partition, 270 Win, 150 Grain, Nosler Partition, 2830 fps150 gr · BC 0.466 · 863 m/s Power-Shok Rifle, 270 Win, 150 Grain, Jacketed Soft Point, 2830 fps150 gr · BC 0.261 · 863 m/s GECO PLUS .270 Win. 9,7g150 gr · BC 0.316 · 850 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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