Last year's Rocky Mountain Airgun Challenge told a story that the precision airgun world is still absorbing: 1st place, 2nd place, 3rd place — all Corbin slugs. Eight of the top ten finishers. In a sport defined by margins measured in fractions of a millimeter, that kind of result isn't variance. That's a verdict.
We built on it. And this year, we're not just defending the PRS podium — we're coming after big bore, too.
The PRS Results Weren't a Coincidence — They Were an Announcement
When you sweep the top three spots at one of the most competitive airgun events in North America, people ask why. The answer isn't complicated, but it is layered.
Corbin slugs win because of what happens before the shot. The alloy. The die geometry. The forming pressure, held constant by hydraulic presses that don't drift, don't fatigue, don't introduce variables. The cold-swaging process produces dimensional consistency that no cast or molded slug can approach — bore-matched weight, uniform surface, repeatable geometry, shot after shot.
Champions don't win on luck. They win because their equipment gives them the same result every single time they pull the trigger. That's what Corbin slugs do. And last year's RMAC podium is the proof.
This Year: We Brought Big Bore Into the Fight
The PRS class was just the beginning. For 2026, Corbin is fielding new big bore slugs across three calibers — and each one represents the best big bore work we've ever done.
New .308 Slug — Heavier, higher BC, refined nose profile. The .308 has always been the bridge between small bore precision and big bore authority. Our new design pushes deeper into match territory — more downrange energy retention, flatter trajectory, and the kind of consistency at 100 yards that serious competitors demand.
New .357 Slug — The .357 big bore class is one of the fastest-growing segments in competitive airgun, and for good reason. Platforms in .357 are powerful, accurate, and increasingly available to competitors at every level. Our new .357 slug is purpose-built for the RMAC environment: higher sectional density, refined bearing surface, and a BC number that challenges anything in the class.
New .457 Slug — This is where big bore gets serious. The .457 caliber is the domain of serious hunters and the kind of competitor who wants the hardest-hitting, longest-reaching slug on the line. Our new .457 is the heaviest, highest-BC big bore slug we've ever produced. It represents everything we've learned across decades of swaging — applied to the caliber that asks the most of a projectile.
Three new slugs. Three classes. One goal: sweep the big bore competition the same way we swept the PRS.
The Industry Runs on Corbin — and We're Iterating Faster Than Ever
Here's a fact that doesn't get discussed openly enough: the airgun slug industry runs on Corbin tooling and Corbin-made slugs. The major brands you're buying from — the ones winning competitions, the ones getting reviewed in the airgun press — a significant portion of them are swaged on Corbin dies, or manufactured directly by Corbin, or designed using Corbin's institutional knowledge.
We designed the FX Hybrid slug in 2012. When the big bore slug market needed someone to step into the vacuum left by larger producers pulling back, Corbin was already there — with the tooling, the knowledge, and the production capability to fill it. The infrastructure of the modern airgun slug market traces back to White City, Oregon. That's not marketing. That's history.
What's changed in recent years is the pace. Our in-house hydraulic swaging presses and direct R&D capability mean we can go from design concept to tested sample in days, not months. When we identify a geometry that promises higher BC, we run it the same week. When a new heavy weight configuration warrants evaluation, we're pulling samples before the design meeting is over.
That iteration speed is what produced the three new big bore slugs we're bringing to RMAC 2026. Not years of committee work and slow vendor cycles. Weeks of engineering, testing, measurement, and refinement — under one roof, with the same team accountable for the result.
Higher BCs. Heavier Slugs. The Best Big Bore Lineup We've Ever Built.
Every generation of Corbin slugs has been better than the last. That's the nature of what we do — iterative improvement, driven by our own precision manufacturing capability and informed by real competition results.
This year's big bore lineup is the clearest expression of that yet. The BC numbers on our new .308, .357, and .457 slugs are the highest we've achieved in those calibers. The weight offerings give competitors more flexibility in tuning for their specific platforms and power plants. And the dimensional consistency — bore-matched, hydraulically formed, measured against spec before they ever leave the facility — is as good as it has ever been.
When the RMAC field loads up this year, they're going to be shooting the best big bore slugs available. A lot of them will be shooting Corbin slugs. The rest will be shooting slugs that were made possible by Corbin's infrastructure, Corbin's tooling, or Corbin's decades of institutional knowledge.
That's the position we occupy in this industry. Not by accident. By building better, iterating faster, and letting the results speak.
See You at the Range
RMAC 2026 is going to be something. The PRS podium is ours to defend. The big bore classes are wide open — and our new .308, .357, and .457 are hungry for the top spot.
If you're competing this year, we want to hear from you. If you're building your competition slug program and want to discuss caliber options, weight configurations, or what our in-house manufacturing can do for you, reach out directly.
We'll be watching the results. We expect to like what we see.
We Swept the Podium - Now Were Coming for Big Bore