Norma · Magnum

Norma Solid .375 Holland and Holland Magnum 19.4g

0.229BC (G1)

300.0gr19.44 g

777m/s2549 fps

5868J4328 ft·lb

Manufacturer	Norma
Calibre	9.53 mm (.375")
Bullet weight	300.0 gr · 19.44 g
Ballistic coefficient G1	0.229
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	777.0 m/s · 2549 fps
Muzzle energy	5868 J · 4328 ft·lb
Sectional density	0.304
Form factor	i1 1.329
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 5868 J (4328 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.304 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 21 loads of this bore diameter in the database, this one's G1 BC of 0.229 is higher than 2 of them.

Similar 9.53 mm (.375") loads

Power-Shok Rifle, 375 H&H Magnum, 300 Grain, Jacketed Soft Point, 2530 fps300 gr · BC 0.323 · 771 m/s Safari Swift A-Frame, 375 H&H Magnum, 300 Grain, Swift A-Frame, 2450 fps300 gr · BC 0.325 · 747 m/s Safari Trophy Bonded Bear Claw, 375 H&H Magnum, 300 Grain, Trophy Bonded Bear Claw, 240...300 gr · BC 0.342 · 732 m/s Safari Trophy Bonded Sledgehammer Solid, 375 H&H Magnum, 300 Grain, Trophy Bonded Sledg...300 gr · BC 0.253 · 744 m/s Safari Woodleigh Hydro Solid, 375 H&H Magnum, 300 Grain, Woodleigh Hydro Solid, 2500 fps300 gr · BC 0.260 · 762 m/s 375 H&H 300 gr DGS®300 gr · BC 0.275 · 771 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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