Norma · Magnum

Norma Oryx 7 mm Remington Magnum 11g

0.324BC (G1)

170.0gr11.02 g

880m/s2887 fps

4265J3146 ft·lb

Manufacturer	Norma
Calibre	7.21 mm (.284")
Bullet weight	170.0 gr · 11.02 g
Ballistic coefficient G1	0.324
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	880.0 m/s · 2887 fps
Muzzle energy	4265 J · 3146 ft·lb
Sectional density	0.301
Form factor	i1 0.930
Category	Magnum
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 4265 J (3146 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.301 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 177 loads of this bore diameter in the database, this one's G1 BC of 0.324 is higher than 66 of them.

Similar 7.21 mm (.284") loads

Terminal Ascent, 7mm Backcountry, 170 Grain, Terminal Ascent, 3150 fps170 gr · BC 0.646 · 960 m/s Terminal Ascent, 7MM PRC, 170 Grain, Terminal Ascent, 2950 fps170 gr · BC 0.646 · 899 m/s GECO PLUS 7mm Rem. Mag. 11,0g170 gr · BC 0.375 · 866 m/s Norma Plastic Point 7 mm Remington Magnum 11g170 gr · BC 0.378 · 900 m/s Norma Vulkan 7 mm Remington Magnum 11g170 gr · BC 0.353 · 900 m/s SAKO Controlled Expansion Series 7 mm Rem. Mag. 11 g / 170 gr170 gr · BC 0.371 · 860 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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