Winchester Super-X 300 gr Jacketed Hollow Point

.45-70 Govt · 300 gr · Super-X · #X4570H. 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: 0.283maker G1
Muzzle velocity: 1,880 fps24″ test barrel · ~15 fps per inch
Muzzle energy: 2,354 ft·lb300 gr at 1,880 fps
Transonic: 250 ydMach 1.2 — where the solver stops being sure
500 yd: 9.7 mil669 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	-0.3	-1.0	0.5	0.3	0.9	0.5	1,751	2,042	0.08
100	0.0	0.0	0.0	0.5	1.9	2.0	1,628	1,766	0.17
150	0.7	2.4	-3.8	0.8	2.9	4.6	1,513	1,526	0.27
200	1.6	5.4	-11.4	1.2	4.0	8.3	1,407	1,319	0.37
250	2.6	8.9	-23.4	1.5	5.1	13.4	1,311	1,144	0.48
300	3.7	12.9	-40.5	1.8	6.3	19.7	1,225	1,000	0.60
350	5.0	17.3	-63.3	2.2	7.4	27.3	1,152	885	0.73
400	6.4	22.1	-92.7	2.5	8.6	36.1	1,092	795	0.86
450	8.0	27.4	-129.4	2.8	9.7	45.9	1,043	725	1.00
500	9.7	33.2	-174.0	3.1	10.8	56.6	1,002	669	1.15
550	11.5	39.5	-227.3	3.4	11.8	68.2	968	623	1.30
600	13.4	46.1	-289.9	3.7	12.8	80.5	937	585	1.46
650	15.5	53.2	-362.4	4.0	13.7	93.6	909	551	1.62
700	17.7	60.8	-445.4	4.3	14.6	107.3	884	521	1.79
750	20.0	68.7	-539.6	4.5	15.5	121.6	861	493	1.96
800	22.4	77.1	-645.5	4.7	16.3	136.5	839	469	2.14
850	25.0	85.8	-763.9	5.0	17.1	152.0	818	446	2.32
900	27.6	95.0	-895.2	5.2	17.8	168.1	799	425	2.50
950	30.4	104.6	-1040.3	5.4	18.6	184.8	780	405	2.69
1000	33.3	114.6	-1199.8	5.6	19.3	202.1	762	387	2.89

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.

Pronghorn350 ydKeeps 800 ft·lb and expansion velocity to 350 yd. Behind the shoulder only — not a bone-breaking bullet.

Whitetail deer300 ydKeeps 1,000 ft·lb and expansion velocity to 300 yd. Behind the shoulder only — not a bone-breaking bullet.

Mule deer300 ydKeeps 1,000 ft·lb and expansion velocity to 300 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