Winchester Super-X 405 gr Lead Flat Nose

.45-70 Govt · 405 gr · Super-X · #X4570CB. Maker-published figures, velocity measured in a 24″ 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: 0.280maker G1
Muzzle velocity: 1,150 fps24″ test barrel · ~15 fps per inch
Muzzle energy: 1,189 ft·lb405 gr at 1,150 fps
Transonic: 50 ydMach 1.2 — where the solver stops being sure
500 yd: 20.3 mil597 ft·lb on arrival
Twist: 1:20typical 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	-1.5	-5.3	2.8	0.3	1.1	0.6	1,090	1,067	0.13
100	0.0	0.0	0.0	0.6	2.1	2.2	1,040	973	0.28
150	2.0	6.9	-10.8	0.9	3.0	4.7	1,000	898	0.42
200	4.2	14.4	-30.2	1.1	3.9	8.1	965	837	0.58
250	6.6	22.6	-59.1	1.4	4.7	12.2	934	784	0.73
300	9.1	31.1	-97.8	1.6	5.4	17.1	906	738	0.90
350	11.7	40.2	-147.2	1.8	6.2	22.7	881	698	1.06
400	14.4	49.6	-207.7	2.0	6.9	28.8	857	661	1.24
450	17.3	59.4	-280.1	2.2	7.6	35.7	835	628	1.41
500	20.3	69.7	-365.0	2.4	8.2	43.1	815	597	1.60
550	23.4	80.4	-463.0	2.6	8.9	51.1	795	568	1.78
600	26.6	91.5	-574.7	2.8	9.5	59.7	776	542	1.97
650	30.0	103.0	-701.0	2.9	10.1	69.0	758	517	2.17
700	33.4	114.9	-842.5	3.1	10.7	78.8	741	494	2.37
750	37.0	127.3	-999.8	3.3	11.4	89.2	724	472	2.58
800	40.8	140.1	-1173.9	3.5	12.0	100.2	708	451	2.79
850	44.6	153.4	-1365.5	3.7	12.6	111.7	693	432	3.00
900	48.6	167.2	-1575.4	3.8	13.1	123.9	678	413	3.22
950	52.8	181.4	-1804.4	4.0	13.7	136.7	664	396	3.45
1000	57.0	196.1	-2053.6	4.2	14.3	150.0	649	379	3.68

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 / varmint1,000 ydKeeps 250 ft·lb and expansion velocity to 1,000 yd. Behind the shoulder only — not a bone-breaking bullet.

Pronghorn200 ydKeeps 800 ft·lb and expansion velocity to 200 yd. Behind the shoulder only — not a bone-breaking bullet.

Whitetail deer50 ydKeeps 1,000 ft·lb and expansion velocity to 50 yd. Behind the shoulder only — not a bone-breaking bullet.

Mule deer50 ydKeeps 1,000 ft·lb and expansion velocity to 50 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 .45-70 Govt factory loads · best for coyote · best for whitetail · best for wild · best for elk

Source: https://winchester.com/Products/Ammunition/Rifle/Super-X · 24" per brand-wide statement in Winchester 2026 catalog ("all other ballistic data generat