Hornady Subsonic 255 gr Sub-X

7.62x39 · 255 gr · Subsonic · #80787. Maker-published figures, velocity measured in a 20″ 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: 0.365maker G1
Muzzle velocity: 1,050 fps20″ test barrel · ~22 fps per inch
Muzzle energy: 624 ft·lb255 gr at 1,050 fps
Transonic: 50 ydMach 1.2 — where the solver stops being sure
500 yd: 22.3 mil361 ft·lb on arrival
Twist: 1:10typical 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	-1.9	-6.4	3.3	0.2	0.8	0.4	1,011	579	0.15
100	0.0	0.0	0.0	0.5	1.5	1.6	978	542	0.30
150	2.3	7.9	-12.4	0.7	2.3	3.6	949	510	0.45
200	4.8	16.5	-34.5	0.9	3.0	6.2	922	482	0.61
250	7.4	25.5	-66.8	1.1	3.6	9.5	898	457	0.78
300	10.2	35.0	-109.8	1.2	4.3	13.5	876	434	0.95
350	13.0	44.8	-164.2	1.4	4.9	18.0	855	414	1.12
400	16.0	55.0	-230.5	1.6	5.5	23.2	835	395	1.30
450	19.1	65.6	-309.3	1.8	6.2	29.0	816	377	1.48
500	22.3	76.6	-401.1	2.0	6.8	35.3	799	361	1.67
550	25.6	88.0	-506.6	2.1	7.3	42.3	781	346	1.86
600	29.0	99.7	-626.3	2.3	7.9	49.8	765	331	2.05
650	32.5	111.8	-761.0	2.5	8.5	57.9	749	318	2.25
700	36.2	124.3	-911.3	2.6	9.1	66.6	734	305	2.45
750	39.9	137.2	-1077.8	2.8	9.7	75.9	719	293	2.66
800	43.8	150.6	-1261.3	3.0	10.2	85.8	705	281	2.87
850	47.8	164.3	-1462.4	3.1	10.8	96.2	691	270	3.09
900	51.9	178.5	-1682.0	3.3	11.4	107.3	678	260	3.31
950	56.2	193.1	-1920.8	3.5	12.0	118.9	665	250	3.53
1000	60.5	208.1	-2179.6	3.6	12.5	131.2	652	241	3.76

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 / varmintWrong bulletTarget / varmint construction — not for this animal.

PronghornWrong bulletTarget / varmint construction — not for this animal.

Whitetail deerWrong bulletTarget / varmint construction — not for this animal.

Mule deerWrong bulletTarget / varmint construction — not for this animal.

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 7.62x39 factory loads · best for coyote · best for whitetail · best for wild · best for elk

Source: https://www.hornady.com/ammunition/rifle/7.62x39-255-gr-sub-x-subsonic · 20" test barrel per product page