Hornady Superformance 117 gr SST

.257 Roberts · 117 gr · Superformance · #81353. 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: 0.390maker G1
Muzzle velocity: 2,946 fps24″ test barrel · ~22 fps per inch
Muzzle energy: 2,254 ft·lb117 gr at 2,946 fps
Transonic: 850 ydMach 1.2 — where the solver stops being sure
500 yd: 2.8 mil888 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	0.2	0.7	-0.4	0.1	0.3	0.2	2,823	2,069	0.05
100	0.0	0.0	0.0	0.2	0.7	0.7	2,702	1,897	0.11
150	0.2	0.5	-0.8	0.3	1.1	1.7	2,586	1,737	0.16
200	0.4	1.4	-3.0	0.4	1.5	3.1	2,472	1,587	0.22
250	0.7	2.5	-6.5	0.5	1.9	4.9	2,361	1,448	0.28
300	1.1	3.7	-11.7	0.7	2.3	7.2	2,253	1,318	0.35
350	1.5	5.0	-18.5	0.8	2.7	10.1	2,147	1,198	0.42
400	1.9	6.5	-27.2	0.9	3.2	13.4	2,045	1,086	0.49
450	2.3	8.1	-38.0	1.1	3.7	17.4	1,945	983	0.56
500	2.8	9.8	-51.1	1.2	4.2	22.0	1,848	888	0.64
550	3.4	11.6	-66.7	1.4	4.7	27.3	1,755	800	0.73
600	3.9	13.6	-85.2	1.5	5.3	33.3	1,665	721	0.81
650	4.6	15.7	-106.8	1.7	5.9	40.1	1,580	648	0.91
700	5.2	18.0	-131.9	1.9	6.5	47.7	1,498	583	1.00
750	6.0	20.5	-160.9	2.1	7.1	56.1	1,421	524	1.11
800	6.7	23.2	-194.1	2.3	7.8	65.4	1,349	473	1.22
850	7.6	26.1	-232.2	2.5	8.5	75.5	1,282	427	1.33
900	8.5	29.2	-275.5	2.7	9.2	86.6	1,222	388	1.45
950	9.5	32.6	-324.7	2.9	9.9	98.6	1,168	355	1.58
1000	10.6	36.3	-380.2	3.1	10.6	111.4	1,121	327	1.71

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.

Pronghorn550 ydKeeps 800 ft·lb and expansion velocity to 550 yd. Behind the shoulder only — not a bone-breaking bullet.

Whitetail deer400 ydKeeps 1,000 ft·lb and expansion velocity to 400 yd. Behind the shoulder only — not a bone-breaking bullet.

Mule deer400 ydKeeps 1,000 ft·lb and expansion velocity to 400 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 Roberts factory loads · best for coyote · best for whitetail · best for wild · best for elk

Source: https://www.hornady.com/ammunition/rifle/257-roberts-p-117-gr-sst-superformance · 24" test barrel per product page