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Recently purchased a Benjamin Akela PCP in .22 cal. Tested the out of the box stock gun with Air Arms Diabolo Field 16gn pellets at maximum velocity (using the dial on the receiver), and got the following visualization using chronograph data: The velocity peaks on the third shot at 970 fps...

Does anyone know the specs on the FX OEM hammer spring? Specifically the spring constant (lb/in or N/m)? I had a “power tune” done by SPAW and now I have a heavier hammer that is hitting so hard that I am having trouble getting a proper tune to shoot lighter pellets. Think I might need to...

Requesting help from anyone with good results shooting 36 grain Nielsen .25 cal slugs through an FX impact X (not Mk II) with a 700mm slug barrel. I’ve been tinkering like crazy with reg pressure & hammer spring to try and get 850+ fps muzzle velocity, and I can’t find the right combination. I...