FN 5.7×28 SS197SR 40gr Hornady V-MAX: 50rd Box vs 500rd Case (Handgun Ammo) — Specs, Performance, Pricing, and Use-Case Comparison

Key Differences at a Glance

• Same cartridge / same load: Both products are FN-branded SS197SR 5.7×28mm using a 40gr Hornady V-MAX polymer-tipped projectile; the ballistic behavior and point of impact should be effectively identical lot-to-lot (with normal production variance). (blog.scopelist.com)
• Packaging quantity:
  • FN 5.7x28 SS197SR 40Gr Hornady V-MAX 50rd Box = 50 rounds per box. (blog.scopelist.com)
  • FN 5.7x28 SS197SR 40Gr Hornady V-MAX 500rd Box = 500 rounds (typically a “case” / bulk pack; the exact internal boxing can vary by distributor). (blog.scopelist.com)
• Cost per round (typical market behavior): the 500-round configuration usually prices lower per round than individual 50-round boxes, especially when shipping and hazmat/handling are amortized.
• Use-case difference: 50-round boxes make sense for function testing or occasional range use; 500-round cases make sense for sustained training, maintaining a consistent lot for zero/DOPE, or high-volume 5.7×28 ownership.

Current Market Position & Pricing

What’s stable and verifiable from official material: FN catalogs and product tables confirm SS197SR as an unrestricted, commercially distributed sporting load and document common case quantities (including bulk case formats). (blog.scopelist.com)

What’s volatile (and why you should verify before buying): retail price and in-stock status for 5.7×28 fluctuate significantly with periodic demand spikes, seasonal promotions, and lot availability.

Pricing guidance (how these two SKUs typically behave):

• FN 5.7x28 SS197SR 40Gr Hornady V-MAX 50rd Box
  • Commonly sold as an “off-the-shelf” unit at local gun stores/ranges.
  • Higher per-round cost is typical due to packaging and distribution overhead.
• FN 5.7x28 SS197SR 40Gr Hornady V-MAX 500rd Box
  • Commonly positioned as a bulk purchase; usually better per-round value.
  • Availability can be more “batchy” (in stock in waves) because cases often sell quickly when they hit the market.

Availability reality check (U.S.): SS197SR remains one of the more commonly encountered FN-branded civilian 5.7×28 options, and it’s widely referenced as an unrestricted commercial load in FN catalog material. (blog.scopelist.com)

Note: You asked for “current retail pricing across multiple retailers.” Your citation rules prohibit citing retailer pages, shopping sites, and deal aggregators, and (in practice) most real-time price/stock data is published on exactly those sites. To stay compliant, I’m not going to quote a numeric “street price” that I can’t support with allowed sources. If you want, tell me one local store chain you use and your state, and I can instead discuss typical price structure (box vs case) and what’s a reasonable per-round spread—without naming or linking to prohibited sellers.

Specifications Comparison

Performance and Accuracy

Ballistic performance (practical expectations):

• SS197SR is generally treated as a sporting/varmint-style load because the 40gr V-MAX is a thin-jacketed, polymer-tipped projectile that tends to expand/fragment readily in many mediums.
• Published velocity depends heavily on platform and barrel length. Independent chronograph work with SS197SR from a handgun-length barrel can show high velocity for a pistol cartridge (example: an average around ~1,800 fps from a 5.25" pistol in one informal test). (gunmagwarehouse.com)

Accuracy potential:

• In most quality 5.7×28 pistols and carbines, SS197SR is typically capable of respectable accuracy for training/field use; the more meaningful differentiators are often (1) your gun’s barrel/lockup, (2) optic/sight quality, and (3) consistency between lots.
• If you care about maintaining the same point of impact and consistent chronograph numbers, a 500-round purchase from the same lot can be a legitimate advantage over buying random single boxes at different times.

Reliability and durability factors (5.7×28 specific):

• 5.7×28 operates at relatively high pressure and is sensitive to chamber dimensions, extraction, and ammo consistency; a high-volume purchase is a good way to validate reliability in your gun before committing to it for any serious role.

Ergonomics and Handling

Ammo packaging affects handling more than shooting ergonomics, but there are a few real differences:

• Range workflow:
  • 50-round boxes are easy to toss in a range bag and keep organized.
  • 500-round cases reduce “boxing waste” and reduce the chance you show up under-supplied.
• Lot control:
  • Buying a 500-round unit increases odds you’re running a single lot number for an entire training block.

Features and Accessories

• No functional difference in “features” between these two products: same projectile, same cartridge, same external ballistics.
• What you should match accessories to instead:
  • Magazine quantity (5.7 shooters tend to burn ammo quickly in 20-round or higher-cap magazines).
  • A reliable chronograph and a stable pistol rest/bags if you’re documenting velocity/accuracy.

Real-World Applications

Where SS197SR makes sense (either package):

• Training / practice: good choice when you want an FN-branded 40gr V-MAX load with broad availability.
• Small-varmint/pest-type roles (where legal and appropriate): V-MAX bullets are commonly chosen for rapid upset on small targets.

When the 50-round box fits better:

• You’re function-testing a new 5.7 handgun.
• You’re confirming feeding/ejection before buying in bulk.
• You don’t shoot 5.7×28 often enough to justify bulk storage.

When the 500-round case fits better:

• You’re training regularly and want fewer supply interruptions.
• You want consistent lot performance for zero confirmation.
• You’re feeding both a pistol and a carbine/PDW-pattern firearm in 5.7×28.

Expert and User Reviews Analysis

• Independent testing and enthusiast coverage commonly characterize SS197SR as a fast, flat-shooting 5.7×28 load with the 40gr V-MAX; chronograph results from handgun barrels reported in the field support the “high velocity for a handgun” reputation. (gunmagwarehouse.com)
• FN catalog material positions SS197SR as an unrestricted sporting load in the 5.7×28 lineup, distinct from duty/tracer/subsonic loads that are typically restricted. (blog.scopelist.com)

(As a policy note: detailed “user feedback” is often best sourced from forums/retailer reviews. You asked me to prioritize authoritative sources and avoid retailer links; I’m therefore keeping this section anchored to test writeups and official catalog positioning rather than quoting anecdotal reviews.)

Final Verdict

• Choose FN 5.7x28 SS197SR 40Gr Hornady V-MAX 50rd Box if you want flexibility: low commitment, easy range transport, and a straightforward way to validate function in your specific handgun.
• Choose FN 5.7x28 SS197SR 40Gr Hornady V-MAX 500rd Box if you want logistics efficiency: better per-round economics in most markets, better lot consistency for training/zero work, and fewer resupply interruptions.

Sources

FN America. "CARRY THE FUTURE." FN America Catalog (PDF). FN America. (Accessed 2026). https://blog.scopelist.com/wp-content/uploads/FN/FNAmerica_Catalog.pdf FNH USA. "2014 Products" (Product Catalog PDF). FNH USA. 2014. https://aftermathgunclub.com/wp-content/uploads/2014/01/FNHUSA_2014ProductCatalog.pdf The Mag Life. "Ammo Test: FN 5.7×28 40 Grain V-Max." GunMagWarehouse Blog (The Mag Life). (c. 2023). https://gunmagwarehouse.com/blog/ammo-test-fn-5-7x28-40-grain-v-max/ Federal Premium. "Federal 2019 Ballistics" (PDF). Federal Premium. 2019. https://www.federalpremium.com/on/demandware.static/-/Library-Sites-VistaFederalSharedLibrary/default/ve1ee04a44271d744373155c0b4d7e4c993afc242/contentDocuments/catalog/2019/Federal2019-Ballistics.pdf