HexCore Mounts — Ammunition Reference
Ammo Selection
Guide
Factory ammunition recommendations by platform and role — self-defense, range training, precision, hunting, and suppressor use. Real brand and product names with honest context on what each load is designed for and where it works best.
Factory Ammo Only
6 Roles Covered
20+ Brands
10 FAQs
8
Calibers
6
Roles
20+
Brands
10
FAQs
Ammo Roles — What Are You Loading For?
Defensive
Self-Defense / Carry
Expanding hollow points designed for reliable function in defensive firearms, controlled penetration (12–18" in gel per FBI protocol), and consistent expansion. Premium price. Run at least 200 rounds of your carry ammo through your gun to verify reliability.
Training
Range / Practice
FMJ or plated bullets for volume shooting. Cheapest per round. Prioritize reliability and clean-burning powder. Not designed for terminal performance — do not carry FMJ for self-defense.
Suppressor
Subsonic / Suppressor Use
Subsonic loads stay below ~1,050 fps to eliminate the supersonic crack. Heavier bullets at lower velocity. Essential for maximizing suppressor effectiveness. Not all calibers have practical subsonic options.
Precision
Match / Competition
Tighter tolerances on bullet weight, powder charge, and OAL. Consistent velocity (low standard deviation). Premium bullets like Sierra MatchKing, Hornady ELD Match, and Berger Hybrid. Higher cost per round.
Hunting
Game / Terminal Performance
Controlled expansion, deep penetration, and weight retention. Bullet construction matters enormously — bonded, partition, and monolithic designs hold together at impact velocity. Match bullet to game size.
Duty
LE / Duty Use
FBI-protocol tested expanding ammunition with barrier-blind performance (auto glass, drywall, heavy clothing). Specific LE contract loads from Federal, Speer, Hornady, and Winchester dominate this segment.
9mm — The Most Common Caliber
| Role | Load | Bullet | Velocity (4" bbl) | Why This One |
|---|---|---|---|---|
| Self-Defense | Federal HST 124gr | JHP | ~1,150 fps | The most recommended defensive 9mm; consistent 0.50"+ expansion; 14–16" penetration; used by hundreds of LE agencies |
| Self-Defense | Speer Gold Dot 124gr | JHP (bonded) | ~1,150 fps | Bonded core prevents jacket separation; FBI protocol tested; LE contract standard alongside HST |
| Self-Defense | Hornady Critical Duty 135gr | FlexLock | ~1,010 fps | Barrier-blind design (auto glass, drywall); FlexLock tip prevents clogging; optimized for duty-length barrels |
| Self-Defense | Federal Punch 124gr | JHP | ~1,150 fps | Consumer-market defensive load; simpler SKU availability than HST in some markets |
| Range / Practice | Federal American Eagle 115gr | FMJ | ~1,180 fps | Clean-burning, reliable, widely available; the baseline 9mm range round |
| Range / Practice | Winchester White Box 115gr | FMJ | ~1,190 fps | Budget option; slightly dirtier than AE; high availability |
| Range / Practice | Blazer Brass 115gr | FMJ | ~1,145 fps | CCI-made; brass case; reloadable; excellent budget option |
| Subsonic / Suppressor | Federal American Eagle Subsonic 147gr | FMJ | ~985 fps | Factory subsonic; reliable cycling in most semi-autos; good suppressor pairing |
| Subsonic / Suppressor | Federal HST 147gr | JHP | ~1,000 fps | Near-subsonic defensive load; excellent expansion even at low velocity; suppressor-friendly for carry guns |
5.56 NATO / .223 Rem
| Role | Load | Bullet | Velocity (16") | Why This One |
|---|---|---|---|---|
| Home Defense | Hornady 75gr BTHP TAP | BTHP | ~2,790 fps | Heavy-for-caliber; tumbles/fragments quickly; reduced over-penetration risk vs M855 |
| Home Defense | Federal Fusion 62gr | Bonded SP | ~3,000 fps | Bonded core for controlled expansion; good barrier performance; widely available |
| Home Defense | Speer Gold Dot 75gr | Bonded HP | ~2,790 fps | LE-oriented; bonded for barrier-blind performance; 1:7 or 1:8 twist required |
| Range / Training | Federal XM193 55gr | FMJ | ~3,150 fps | M193 ball equivalent; the standard 5.56 training round |
| Range / Training | PMC X-TAC 55gr | FMJ | ~3,200 fps | Korean military spec; reliable; often cheaper than Federal |
| Precision / Match | Federal Gold Medal 77gr SMK | Sierra MatchKing | ~2,720 fps | The benchmark .223 match load; MK262-equivalent; 1:7 or 1:8 twist |
| Precision / Match | Hornady 73gr ELD Match | ELD Match | ~2,790 fps | Heat-resistant polymer tip; consistent BC; excellent long-range .223 option |
| Varmint / Hunting | Hornady 55gr V-MAX | Polymer tip | ~3,240 fps | Explosive expansion; excellent for varmint and predator; not for large game |
.300 Blackout
| Role | Load | Bullet | Velocity (9") | Why This One |
|---|---|---|---|---|
| Home Defense (Super) | Barnes 110gr TAC-TX | All-copper HP | ~2,200 fps | Monolithic copper; deep penetration; no lead fragmentation; excellent from short barrels |
| Home Defense (Sub) | Hornady Sub-X 190gr | Sub-X (polymer tip) | ~1,050 fps | Subsonic expanding bullet; designed specifically for suppressed .300 BLK home defense |
| Suppressor / Subsonic | Federal American Eagle 220gr OTM | OTM Subsonic | ~1,000 fps | Affordable subsonic; reliable cycling; quiet with a can |
| Suppressor / Subsonic | Magtech 200gr FMJ Subsonic | FMJ | ~1,050 fps | Budget subsonic; reliable; good for volume suppressed shooting |
| Supersonic | Federal Fusion 150gr | Bonded SP | ~1,900 fps | Hunting load; bonded core for game; effective to ~200 yards from short barrels |
Critical safety note: .300 BLK and 5.56/.223 share the same magazine and lower receiver. A .300 BLK round will chamber in a 5.56 barrel and fire — causing catastrophic failure. Always mark magazines, label uppers, and never mix .300 BLK and 5.56 on the same bench or range bag.
.308 Win / 7.62 NATO
| Role | Load | Bullet | Velocity (20") | Why This One |
|---|---|---|---|---|
| Precision / Match | Federal Gold Medal 168gr SMK | Sierra MatchKing | ~2,650 fps | The benchmark .308 match load; consistent; widely available |
| Precision / Match | Federal Gold Medal 175gr SMK | Sierra MatchKing | ~2,600 fps | Better BC than 168gr; preferred for 600+ yard precision; M118LR equivalent |
| Precision / Match | Hornady 178gr ELD Match | ELD Match | ~2,600 fps | Heat-resistant tip; excellent BC; competitive with SMK at long range |
| Hunting | Federal Fusion 165gr | Bonded SP | ~2,700 fps | Excellent deer/elk load; bonded core; affordable hunting round |
| Hunting | Nosler AccuBond 165gr | Bonded polymer tip | ~2,700 fps | Premium bonded hunting bullet; high weight retention; reliable expansion |
| Range / Training | Federal American Eagle 150gr | FMJ | ~2,820 fps | Standard .308 training round; M80 ball equivalent |
Additional Calibers — Quick Picks
| Caliber | Self-Defense / Carry | Range / Practice | Precision / Hunting | Subsonic / Suppressor |
|---|---|---|---|---|
| .45 ACP | Federal HST 230gr, Speer Gold Dot 230gr | Federal AE 230gr FMJ, Blazer Brass 230gr | — | Standard 230gr is subsonic by nature (~830 fps) |
| 6.5 Creedmoor | — | Federal AE 140gr OTM | Hornady 140gr ELD Match, Federal 130gr Berger Hybrid | — |
| .22 LR | CCI Stinger 32gr (limited role) | CCI Standard Velocity 40gr, Federal AutoMatch | Eley Match, SK Standard Plus, Lapua Center-X | CCI Quiet 40gr (~710 fps), Aguila Colibri |
| 12 Gauge | Federal FliteControl 00 Buck, Hornady Critical Defense | Any 2¾" target load (7½ or 8 shot) | Federal Trophy Copper slug, Hornady SST slug | Aguila Minishell (limited) |
| .380 ACP | Federal HST Micro 99gr, Hornady Critical Defense 90gr | Blazer Brass 95gr FMJ | — | — |
| 10mm | Federal HST 200gr, Speer Gold Dot 200gr | Federal AE 180gr FMJ | Hornady 175gr ELD-X (hunting) | — |
Frequently Asked Questions
What is the single best self-defense 9mm round?▾
Federal HST 124gr is the most widely recommended by LE agencies, defensive firearms instructors, and independent gel testing. Speer Gold Dot 124gr is an equally valid choice. Both have decades of street-proven performance. The best round is the one that functions reliably in YOUR specific firearm — always test with your carry gun.
Is FMJ OK for self-defense?▾
No. FMJ does not expand on impact. It passes through the target with minimal energy transfer and maximum over-penetration risk. FMJ is for training only. Carry JHP (hollow point) ammunition designed for defensive use. Every major manufacturer makes a defensive line specifically for this purpose.
How much carry ammo should I test before trusting it?▾
200 rounds minimum without a single malfunction. This verifies reliable feeding, extraction, and function with your specific firearm, magazines, and recoil spring. If your gun chokes on your carry ammo during testing, switch to a load that runs reliably — performance means nothing if the gun jams.
Does +P make a meaningful difference for 9mm carry?▾
Modern bullet designs like Federal HST and Speer Gold Dot achieve excellent expansion and penetration at standard pressure. +P adds 50–100 fps but also increases recoil, flash, blast, and component wear. For most shooters, standard-pressure premium JHP is the better choice. +P makes more sense in short barrels where the extra velocity helps expansion reliability.
What ammo should I use in a suppressor?▾
For maximum quiet: subsonic ammunition (below ~1,050 fps). For 9mm: 147gr subsonic loads. For .300 BLK: 200–220gr subsonic. For .45 ACP: standard 230gr (already subsonic). For .22 LR: CCI Standard Velocity or CCI Quiet. For 5.56 and .308: no practical subsonic option exists — the suppressor reduces muzzle blast but the supersonic crack remains.
Is steel-case ammo bad for my gun?▾
Not in the way most people think. Steel cases do cause slightly more extractor wear than brass, and the lacquer/polymer coating can leave residue. But for a modern, quality firearm, thousands of rounds of steel-case will not cause meaningful damage. The bigger concern is that steel-case ammo often uses bimetal (steel-core) bullets that can damage steel targets and are banned at many indoor ranges. It's also not reloadable.
What does "barrier blind" mean?▾
FBI testing protocol includes shooting through intermediate barriers: heavy clothing, drywall, plywood, sheet metal, and auto glass. "Barrier blind" ammunition performs consistently regardless of what it passes through before hitting the target. Loads like Hornady Critical Duty, Federal HST, and Speer Gold Dot are specifically designed and tested for barrier-blind performance.
Should I use the same ammo brand as my firearm?▾
No — that is a marketing concept, not a ballistic requirement. Federal HST works identically in a Glock, SIG, S&W, or any other reliable 9mm pistol. Choose ammunition based on its performance characteristics, your testing results, and your role — not brand matching.
How should I store ammunition?▾
Cool, dry, and stable temperature. Ammunition does not need refrigeration. A climate-controlled room or safe is ideal. Avoid extreme heat (car trunk in summer), moisture, and solvents. Modern factory ammunition stored properly will remain reliable for decades. Rotate carry ammo annually by shooting your old carry rounds at the range and replacing with fresh.
Does the $0 NFA tax stamp affect ammo?▾
No. The $0 NFA tax stamp under P.L. 119-21 applies to NFA items (suppressors, SBRs). Ammunition is not an NFA item. However, owning a suppressor (now more accessible with the $0 stamp) may change your ammo choices — subsonic loads become much more practical and relevant when you have a can to put them behind.
