Norma 100 gr Whitetail SP

.257 Wby Mag · 100 gr · Whitetail · #20166612. Maker-published figures, velocity measured in a 26″ barrel. Below: the drop chart, the wind, the energy, and how far it is an ethical hunting load — then shoot it.

Shoot this load through the glass →Hunt with it

G1 BC: 0.256maker G1
Muzzle velocity: 3,510 fps26″ test barrel · ~30 fps per inch
Muzzle energy: 2,735 ft·lb100 gr at 3,510 fps
Transonic: 700 ydMach 1.2 — where the solver stops being sure
500 yd: 2.4 mil682 ft·lb on arrival
Twist: 1:8typical factory twist for the solve

Drop chart · 100 yd zero · 10 mph full-value wind

Range yd	Elev mil	Elev MOA	Drop in	Wind mil	Wind MOA	Wind in	Vel fps	Energy ft·lb	TOF s
50	0.3	1.0	-0.5	0.1	0.4	0.2	3,297	2,413	0.04
100	0.0	0.0	0.0	0.3	0.9	0.9	3,095	2,126	0.09
150	0.1	0.3	-0.4	0.4	1.4	2.1	2,902	1,869	0.14
200	0.3	0.9	-1.9	0.5	1.9	3.9	2,717	1,638	0.19
250	0.5	1.7	-4.5	0.7	2.4	6.3	2,539	1,432	0.25
300	0.8	2.7	-8.4	0.9	3.0	9.4	2,369	1,246	0.31
350	1.1	3.8	-14.0	1.0	3.6	13.2	2,205	1,079	0.38
400	1.5	5.1	-21.3	1.2	4.2	17.8	2,047	931	0.45
450	1.9	6.5	-30.7	1.4	4.9	23.3	1,897	799	0.53
500	2.4	8.1	-42.5	1.7	5.7	29.8	1,753	682	0.61
550	2.9	9.9	-57.1	1.9	6.5	37.5	1,618	581	0.70
600	3.5	12.0	-75.1	2.1	7.4	46.3	1,493	495	0.79
650	4.1	14.2	-97.0	2.4	8.3	56.4	1,378	421	0.90
700	4.9	16.8	-123.4	2.7	9.3	67.9	1,275	361	1.01
750	5.8	19.8	-155.3	3.0	10.3	80.8	1,187	313	1.13
800	6.7	23.1	-193.2	3.3	11.3	95.0	1,114	276	1.26
850	7.8	26.8	-238.2	3.6	12.4	110.3	1,056	248	1.40
900	9.0	30.9	-291.0	3.9	13.4	126.7	1,009	226	1.55
950	10.3	35.4	-352.3	4.2	14.5	144.0	970	209	1.70
1000	11.7	40.4	-422.9	4.5	15.5	162.1	936	194	1.86

Orange rows are transonic (Mach 1.2–1.0), red subsonic. Elevation is the come-up; wind is the bullet's drift for 10 mph at 90°, so halve it for 5 mph and for a 30° wind. The app builds this for your barrel length, your altitude and today's weather, and lets you true the MV against what you actually hit.

Energy on the animal

Max ethical range, vitals shot

Coyote / varmint800 ydKeeps 250 ft·lb and expansion velocity to 800 yd. Behind the shoulder only — not a bone-breaking bullet.

Pronghorn400 ydKeeps 800 ft·lb and expansion velocity to 400 yd. Behind the shoulder only — not a bone-breaking bullet.

Whitetail deer350 ydKeeps 1,000 ft·lb and expansion velocity to 350 yd. Behind the shoulder only — not a bone-breaking bullet.

Mule deer350 ydKeeps 1,000 ft·lb and expansion velocity to 350 yd. Behind the shoulder only — not a bone-breaking bullet.

Wild hogWrong bulletTarget / varmint construction — not for this animal.

Black bearWrong bulletTarget / varmint construction — not for this animal.

ElkWrong bulletTarget / varmint construction — not for this animal.

MooseWrong bulletTarget / varmint construction — not for this animal.

Energy floors: Coyote 250 · Pronghorn 800 · Whitetail 1,000 · Mule 1,000 · Wild 1,000 · Black 1,200 · Elk 1,500 · Moose 1,500 ft·lb (see the sources on each animal in the app). Expansion floor from the bullet family's published minimum impact velocity. A bone-breaking shoulder shot wants a bonded, partition or monolithic bullet regardless of energy.

Same cartridge

All .257 Wby Mag factory loads · best for coyote · best for whitetail · best for wild · best for elk

Source: https://www.norma-ammunition.com/products/hunting/norma-whitetail/norma-whitetail-257-weath-mag-100gr---20166612 · 26" barrel per product page ("zeroed with a 660 mm / 26 in barrel"); maker bullet descript