Hornady Subsonic .300 Blackout 190gr Sub-X Ammo Ballistics
Brass Case • Sub-X • MPN: 80877
Hornady Subsonic .300 Blackout 190gr Sub-X Ammo Ballistics
Brass Case • Sub-X • MPN: 80877
Trajectory @ 100yd Zero
| Range | Velocity | Energy | Drop |
|---|---|---|---|
| Muzzle | 1050 fps | 465 ft-lb | — |
| 25 yds | 1035 fps | 452 ft-lb | +2.0" |
| 50 yds | 1022 fps | 441 ft-lb | +3.4" |
| 75 yds | 1009 fps | 430 ft-lb | +2.8" |
| 100 yds ⊕ | 997 fps | 419 ft-lb | +0.0" |
| 125 yds | 986 fps | 410 ft-lb | -4.9" |
| 150 yds | 975 fps | 401 ft-lb | -12.1" |
| 175 yds | 964 fps | 392 ft-lb | -21.6" |
| 200 yds | 954 fps | 384 ft-lb | -33.4" |
| 225 yds | 944 fps | 376 ft-lb | -47.6" |
| 250 yds | 935 fps | 369 ft-lb | -64.2" |
| 275 yds | 926 fps | 362 ft-lb | -83.3" |
| 300 yds | 917 fps | 355 ft-lb | -104.9" |
| 325 yds | 909 fps | 348 ft-lb | -129.1" |
| 350 yds | 901 fps | 342 ft-lb | -155.9" |
| 375 yds | 893 fps | 336 ft-lb | -185.4" |
| 400 yds | 885 fps | 330 ft-lb | -217.6" |
| 425 yds | 877 fps | 325 ft-lb | -252.6" |
| 450 yds | 870 fps | 319 ft-lb | -290.4" |
| 475 yds | 863 fps | 314 ft-lb | -331.1" |
| 500 yds | 856 fps | 309 ft-lb | -374.9" |
Product Overview
Hornady's Sub-X bullet was engineered from scratch to expand at subsonic velocities where conventional hollow points fail. The 190gr projectile at 1,050 fps uses a long polymer tip and a flat lead core designed to initiate expansion below 1,100 fps. Most hollow points need 1,600 fps or more to open reliably. The Sub-X does it at nearly half that speed, which makes the Hornady Subsonic .300 Blackout the most capable suppressed hunting load on the market.
Hog hunters running suppressed .300 Blackout carbines at night are the primary audience for this round. The subsonic velocity eliminates the sonic crack and pairs naturally with thermal or night-vision optics for close-range work inside 100 yards. The Sub-X bullet expands to roughly twice its original diameter at impact speeds typical of 50-75 yard shots, creating wound channels that put hogs down without the noise that sends the rest of the sounder running.
The 0.437 G1 ballistic coefficient keeps the 190gr bullet stable in flight and resistant to crosswinds at typical engagement distances. Hornady loads this in new brass with their standard primer, and feeding reliability in AR-pattern magazines is consistent. For any application where the shot needs to be quiet and the bullet needs to expand, this is the load to use. It costs more than FMJ subsonic options, but no other subsonic .300 Blackout round matches its terminal performance.
- Sub-X bullet is engineered to expand at subsonic velocities below 1,100 fps where conventional hollow points fail
- 0.437 G1 ballistic coefficient provides excellent stability and wind resistance for a subsonic projectile
- Best terminal performance of any subsonic .300 Blackout factory load, expanding to roughly twice original diameter
- Ideal for suppressed hog hunting at night with thermal or night-vision optics inside 100 yards
- Most expensive subsonic .300 Blackout option, not practical for volume range shooting
- 465 ft-lbs of muzzle energy limits effective hunting range to about 75 yards for reliable kills
- 190gr bullet at 1,050 fps produces a steep trajectory arc, requiring careful zero and holdover data past 50 yards
- Not widely stocked in brick-and-mortar stores compared to Winchester or Federal subsonic loads
All Hornady Subsonic .300 Blackout 190gr Sub-X Ammo Prices
| DEALER | QTY | PRICE | SHIPPING | TOTAL | PRICE/RD |
|---|---|---|---|---|---|
| Lucky Gunner | 20 | $32.00 | $18.43 | $50.43 | $2.52 |
Firearms Chambered in .300 Blackout
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