Gamo G- Magnum 1250, The New G-Magnum 1250 by Gamo is our most powerful, accurate and ergonomically designed air rifle. Spurred on by the persistent market demand for increased power at an affordable price, our intentions have always been to satisfy the broadest range of consumers for whom power and price will remain pivotal factors in their buying decision. The European heavyweight of the air gun world has surely answered that criteria by creating the new Gamo G-Magnum 1250 break barrel air rifle, which produces up to 36 Joules energy and comes complete with Gamo’s latest thumbhole ambidextrous synthetic stock.