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  1. Sniper_Tom

    gamo g-magnum 1250 IGT MACH 1 transfer port size

    Hi Johny_great! Thanks for the valuable advice! However, the recess in the Transfer Port hole does not have such an effect on the performance, after all, there is another cavity in the pelet's skirt that has an effect on the compression! As far as I know, no one with the original Gamo IGT gas...
  2. Sniper_Tom

    gamo g-magnum 1250 IGT MACH 1 transfer port size

    OK? By analogy with regulations - permitted AirGuns power limits valid in other countries (7.5-12-16-20-24 Joules) - other values for power settings can be derived by conversion, according to the known simple algorithm 😃, by reducing the gas spring pressure (Gas Ram) or force for a conventional...
  3. Sniper_Tom

    gamo g-magnum 1250 IGT MACH 1 transfer port size

    Optimal Pressure and Force of Gas Ram Spings for Airgun Rifle GAMO G-Magnum 1250 Of course, all efforts to increase performance by modifying the Transfer Port and using a stronger spring - borrowed from the "truck suspension" or the (much sought after) "Mega" and "Giga" gas springs only lead...
  4. Sniper_Tom

    gamo g-magnum 1250 IGT MACH 1 transfer port size

    No more unnecessary speculation! 😂 It's alright ?
  5. Sniper_Tom

    gamo g-magnum 1250 IGT MACH 1 transfer port size

    …”Hi! Can anyone tell me what is the diameter of transfer port for full power version (45j) of this rifle? I bought my rifle online and got reduced power version so i drilled my transfer port to 3,5mm (1.37795 inch) but still i dont have full power like original 45j model. Is now my hole...