Gamo Swarm Magnum PRO 8X GEN3I Inertia Fed .25 Caliber 8-Shot Pellet RifleThe Gamo Swarm Magnum PRO 8X GEN3I Inertia Fed .25 Caliber 8-Shot Pellet Rifle is an air rifle in .25 from Gamo.The S warm Magnum Pro 8X GEN3i (.25) is built for shooters who want one thing above all: serious hunting-level impact with fast follow-up shots. It's a .25 caliber break-barrel that hits with authority, but it doesn't force you to slow down and reload after every shot. The whole platform is centered around GAMO's latest 8X GEN3i horizontal, inertia-fed magazine , keeping the rifle more compact and low-profile while still giving you eight shots on tap.Order the Gamo Swarm Magnum PRO 8X GEN3I Inertia Fed .25 Caliber 8-Shot Pellet Rifle today.Manufacturer OverviewWhat makes this rifle feel next gen is how the magazine works. Instead of a bulky top-mounted design, the GEN3i magazine sits horizontal and indexes using recoil inertia, which helps each pellet line up smoothly for a more consistent breech-loading cycle. It's fast, it's clean, and it keeps the rifle feeling balanced in the hands-especially for a magnum-class break-barrel.Who It Is ForAn air rifle like this is a practical way to build marksmanship skills at home or on a backyard range where local rules allow, to practice trigger control and follow-through at low cost per shot, and, depending on caliber and power, to take on pest control where legal.How the Powerplant WorksA gas-piston (nitrogen or inert gas) powerplant replaces the traditional coil spring with a sealed gas strut. You cock it like a spring gun, but the gas strut does not take a set when left cocked, cycles with less vibration and twang, and stays consistent across temperature changes.About the CaliberThe .25 caliber (6.35 mm) fires heavy pellets and slugs that carry a lot of energy downrange. It suits higher-powered airguns used for larger pests and small game where legal.Specifications ExplainedGamo rates velocity at 965 feet per second (fps) with Alloy Pellets. Published velocity is measured with the ammunition type the manufacturer lists; heavier pellets will shoot slower but often carry more energy.Muzzle energy is listed as 26.55 ft/lbs - 36 J. Energy, not just velocity, is what matters for pest control and small game, where legal.The barrel is listed as Metal jacketed rifled steel barrel. A rifled barrel spins the pellet for accuracy.Trigger: Two stage independently adjustable CAT (Custom Action Trigger). A predictable trigger is one of the biggest factors in accurate shooting.For aiming, the manufacturer lists GAMO 3-9x40 air rifle scope with rings (shockproof, fogproof). Check the rail type before buying rings or a dot sight.The safety is listed as Manual safety and automatic cocking safety system*. Learn how it works from the owner's manual before loading.Getting Started and CareBefore the first session, read the owner's manual, check that the gun is unloaded, and set up a safe backstop or pellet trap. Shoot from a rest to confirm where the gun hits at your usual distance, then adjust the sights or scope.Try several brands and weights of quality .25 pellets of the type the manufacturer lists. Airguns often prefer one pellet over another, and finding it is the quickest way to tighter groups.Break-barrel and gas-piston airguns are hold-sensitive. Use a light, consistent hold, let the gun recoil naturally, and never dry-fire it. Clean the barrel only as the manufacturer recommends.Safety and Local LawsTreat every airgun as if it were loaded, keep the muzzle pointed in a safe direction, and keep your finger off the trigger until you're ready to shoot. Shooters and anyone nearby should wear eye protection. Airgun laws vary by state and city, including age limits and where you can shoot, so check your local rules before ordering. Airguns are not toys and must be used with adult supervision by younger shooters. Store the airgun unloaded and out of reach of children, with ammunition stored separately.Shop More Air GunsPair this air rifle with the right ammunition from our air gun ammo, and compare it with other air rifles.Product SpecificationsManufacturer: GamoBrand: GamoModel: Swarm Magnum PRO 8X GEN3I Inertia Fed .25 Caliber 8-Shot Pellet RifleManufacturer Part Number: 6110039063554UPC: 793676109237Caliber: .25Velocity: 965 feet per second (fps) with Alloy PelletsAction: 8X GEN3i 8-Shot, Auto-Loading TechnologyNoise dampening: Whisper FusionPowerplant: IGT Mach 1 Inert Gas Technology gas piston (33 mm cylinder)Barrel: Metal jacketed rifled steel barrelTrigger: Two stage independently adjustable CAT (Custom Action Trigger)Stock: Automotive grade glass filled nylon all-weatherCheckering: Non-Slip texture design on grip and forearmRecoil Pad: Ventilated rubberSafety: Manual safety and automatic cocking safety system*Optics: GAMO 3-9x40 air rifle scope with rings (shockproof, fogproof)Rail: 11 mm aluminum rail, RRR (Recoil Reducing Rail)Weight: 6.88 lbsLength: 49.2 inLength of Pull: 15 inAmmunition: .25 Cal. - Any .25 Cal. PelletTrigger Pull: 3.2/2.6 lbsBarrel Length: 21.3 inCocking Effort: 41 lbsEnergy: 26.55 ft/lbs - 36 JFrequently Asked QuestionsWhat caliber is the Swarm Magnum PRO 8X GEN3I Inertia Fed .25 Caliber 8-Shot Pellet Rifle?Gamo lists it as .25.What powers this airgun?It uses a gas-piston powerplant that you cock before each shot.How fast does it shoot?The manufacturer lists 965 feet per second (fps) with Alloy Pellets.How much does it weigh?The manufacturer lists 6.88 lbs.How long is it?The manufacturer lists an overall length of 49.2 in.Do I need an FFL to buy an airgun?No. Airguns are not firearms under federal law and ship to your door, but some states and cities restrict airguns, so check your local laws before ordering.Does it come with ammunition or CO2?Only what the manufacturer lists as included. Unless it is listed above, ammunition and accessories are sold separately.What is the manufacturer part number?The part number is 6110039063554 and the UPC is 793676109237.Shop the Gamo Swarm Magnum PRO 8X GEN3I Inertia Fed .25 Caliber 8-Shot Pellet Rifle at BattleHawk Armory.