G-Magnum 1250 Whisper IGT Mach1 | 5.5 | Gamo

G-Magnum 1250 Whisper IGT Mach1 | 5.5 | Gamo

The Gamo G-Magnum 1250 Whisper IGT Mach1 is an impressive break-barrel air rifle designed for the experienced shooter. This gas-spring powered air rifle combines a powerful output of 45 joules with advanced IGT technology for precision shooting at greater distances. With its robust construction of polymer and metal, it is a reliable choice for recreational shooting where maximum performance is required.

Our experience with the G-Magnum 1250 Whisper IGT Mach1

The Shogun team was impressed by the thoughtful balance between power and control in this air rifle. The IGT (Inert Gas Technology) makes cocking surprisingly smooth for an air rifle with this power output. The combination of polymer and metal gives a robust appearance that inspires confidence. At 3 kilograms, it feels solid, which you immediately notice in the stability during shooting.

Technology, performance and variants

The heart of this powerful air rifle is the revolutionary gas spring that performs consistently at all temperatures. This model is available exclusively in 5.5mm calibre with a power output of 45 joules and a muzzle velocity of 380 m/s (1247 FPS). The integrated Whisper suppressor noticeably reduces sound without compromising performance. The barrel length is 510mm and the rifle is fitted with an 11mm dovetail rail for mounting the included 3-9x40 rifle scope. Curious about all the technical details? You'll find them under the 'More information' section on this page.

Use and operation

This break-barrel air rifle operates smoothly and reliably. You fold the barrel downwards, insert your pellet and you're ready to shoot. The single action trigger is precisely calibrated and adjustable for that perfect firing moment. The safety catch is intuitively positioned and can be operated with one movement. For aiming, you use the included rifle scope or the fibre optic iron sights provided.

Who is this air rifle intended for?

The G-Magnum 1250 is designed for the advanced shooter who wants to push their boundaries. With a power output of 45 joules, this air rifle requires experience, proper technique and respect for its power. It is ideal for precision shooting at greater distances of 50-80 metres, where the gas spring technology ensures consistent performance under all conditions.

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